MKW36A/35A/34A Data Sheet
An ultra low power, highly integrated Bluetooth® Low
Energy 5.0 wireless microcontroller
Multi-Standard Radio
2.4 GHz Bluetooth Low Energy (Bluetooth LE) version
5.0 compliant supporting up to 8 simultaneous
hardware connections
Generic FSK modulation
Data Rate: 250, 500 and 1000 kbps
Modulations: GFSK BT = 0.3, 0.5, and 0.7;
FSK/MSK
Modulation Index: 0.32, 0.5, 0.7, and 1.0
Typical Receiver Sensitivity
(Bluetooth LE 1 Mbps) = –95 dBm
Typical Receiver Sensitivity
(250 kbps GFSK-BT=0.5, h=0.5) = –99 dBm
Programmable Transmitter Output Power:
–30 dBm to 5 dBm
Low external component counts for low cost application
On-chip balun with single ended bidirectional RF port
MCU and Memories
256 KB program flash memory plus 256 KB FlexNVM
on KW36A/34A
8 KB FlexRAM supporting EEPROM emulation on
KW36A/34A
512 KB program flash memory on KW35A
Up to 48 MHz Arm® Cortex®-M0+ core
On-chip 64 KB SRAM
System peripherals
Nine MCU low-power modes to provide power
optimization based on application requirements
DC-DC Converter supporting Buck and Bypass
operating modes
Direct memory access (DMA) Controller
Computer operating properly (COP) watchdog
Serial wire debug (SWD) Interface and Micro Trace
buffer
Bit Manipulation Engine (BME)
Analog Modules
16-bit Analog-to-Digital Converter (ADC)
6-bit High Speed Analog Comparator (CMP)
1.2 V voltage reference (VREF)
Timers
16-bit low-power timer (LPTMR)
3 Timer/PWM Modules(TPM): One 4 channel TPM
and two 2 channel TPMs
Programmable Interrupt Timer (PIT)
Real-Time Clock (RTC)
Communication interfaces
2 serial peripheral interface (SPI) modules
2 inter-integrated circuit (I2C) modules
MKW36A512VHT4
MKW36A512VFP4
MKW36A512VFT4
MKW35A512VFP4
MKW35A512VFT4
MKW34A512VFT4
48 LQFN
7x7 mm Pitch 0.5 mm
48 "Wettable" HVQFN
7x7 mm Pitch 0.5 mm
40 "Wettable" HVQFN
6x6 mm Pitch 0.5 mm
NXP Semiconductors MKW36A512
Data Sheet: Technical Data Rev. 8, 05/2020
NXP reserves the right to change the production detail specifications as may be
required to permit improvements in the design of its products.
Low Power Consumption
Transceiver current (DC-DC buck mode, 3.6 V supply)
Typical Rx Current: 6.3 mA
Typical Tx current: 5.7 mA (0 dBm output)
Low Power Mode (VLLS0) Current: 258 nA
Clocks
26 and 32 MHz supported for Bluetooth LE and
Generic FSK modes
32.768 kHz Crystal Oscillator
Operating Characteristics
Voltage range: 1.71 V to 3.6 V
Ambient temperature range: –40 to 105 °C
AEC Q100 Grade 2 Automotive Qualification
Human-machine interface
General-purpose input/output
Low Power UART (LPUART) module with LIN
support (2x LPUART on KW36A)
Carrier Modulator Timer (CMT)
FlexCAN module (with CAN FD support up to 3.2
Mbps baudrate) on KW36A
Security
AES-128 Hardware Accelerator (AESA)
True Random Number Generator (TRNG)
Advanced flash security on Program Flash
80-bit unique identification number per chip
40-bit unique media access control (MAC) sub-
address
LE Secure Connections
Orderable parts details
Device Top Line
Marking Qualification CAN
FD
2nd UART with
LIN FlexRAM Package
MKW36A512VHT4 (F)M36A Auto Y Y Y 7X7 mm 48-pin LQFN
MKW36A512VFT4 MW36A512V4 Auto Y Y Y 7X7 mm 48-pin "Wettable"
HVQFN
MKW36A512VFP4 M36A9V4 Auto Y Y Y 6X6 mm 40-pin "Wettable"
HVQFN
MKW35A512VFT4 MW35A512V4 Auto N N N 7X7 mm 48-pin "Wettable"
HVQFN
MKW35A512VFP4 M35A9V4 Auto N N N 6X6 mm 40-pin "Wettable"
HVQFN
MKW34A512VFT4 MW34A512V4 Auto N N Y 7X7 mm 48-pin "Wettable"
HVQFN
Related Resources
Type Description Resource
Product
Selector
The Product Selector lets you find the right Kinetis part for your design. W-Series Product Selector
Fact Sheet The Fact Sheet gives overview of the product key features and its uses. KW36-35-34 Fact Sheet
Reference
Manual
The Reference Manual contains a comprehensive description of the
structure and function (operation) of a device.
MKW36A512RM1
Data Sheet The Data Sheet includes electrical characteristics and signal
connections.
This document.
Chip Errata The chip mask set Errata provides additional or corrective information for
a particular device mask set.
KINETIS_W_1N41U1
Table continues on the next page...
2MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020
NXP Semiconductors
Related Resources (continued)
Type Description Resource
Package
drawing
Package dimensions are provided in package drawings. 40-pin "Wettable" HVQFN
(6x6): 98ASA01025D1
48-pin LQFN (7x7):
98ASA00694D1
48-pin "Wettable" HVQFN
(7x7): 98ASA01307D1
1. To find the associated resource, go to http://www.nxp.com and perform a search using this term.
MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020 3
NXP Semiconductors
Table of Contents
1 Introduction........................................................................... 5
2 Feature Descriptions.............................................................6
2.1 Block Diagram............................................................... 6
2.2 Radio features............................................................... 7
2.3 Microcontroller features................................................. 8
2.4 System features.............................................................10
2.5 Peripheral features........................................................ 12
2.6 Security Features...........................................................16
3 Transceiver Description........................................................ 17
3.1 Key Specifications......................................................... 18
3.2 Channel Map Frequency Plans .................................... 18
3.2.1 Channel Plan for Bluetooth Low Energy............18
3.2.2 Other Channel Plans ........................................ 20
3.3 Transceiver Functions................................................... 20
4 Transceiver Electrical Characteristics...................................20
4.1 Radio operating conditions............................................ 21
4.2 Receiver Feature Summary...........................................21
4.3 Transmit and PLL Feature Summary.............................23
5 System and Power Management..........................................28
5.1 Power Management.......................................................28
5.1.1 DC-DC Converter.............................................. 28
5.2 Modes of Operation....................................................... 29
5.2.1 Power modes.....................................................29
6 KW36A/35A/34A Electrical Characteristics...........................31
6.1 AC electrical characteristics...........................................31
6.2 Nonswitching electrical specifications............................32
6.2.1 Voltage and current operating requirements..... 32
6.2.2 LVD and POR operating requirements..............33
6.2.3 Voltage and current operating behaviors...........34
6.2.4 Power mode transition operating behaviors...... 35
6.2.5 Power consumption operating behaviors.......... 35
6.2.6 Diagram: Typical IDD_RUN operating behavior41
6.2.7 SoC Power Consumption.................................. 43
6.2.8 Designing with radiated emissions in mind........44
6.2.9 Capacitance attributes.......................................44
6.3 Switching electrical specifications..................................45
6.3.1 Device clock specifications................................45
6.3.2 General switching specifications....................... 45
6.4 Thermal specifications...................................................46
6.4.1 Thermal operating requirements....................... 46
6.4.2 Thermal attributes..............................................47
6.5 Peripheral operating requirements and behaviors.........47
6.5.1 Core modules.................................................... 47
6.5.2 System modules................................................ 48
6.5.3 Clock modules................................................... 49
6.5.4 Memories and memory interfaces..................... 53
6.5.5 Security and integrity modules.......................... 55
6.5.6 Analog............................................................... 56
6.5.7 Timers................................................................63
6.5.8 Communication interfaces................................. 63
6.5.9 Human-machine interfaces (HMI)......................68
6.6 DC-DC Converter Operating Requirements.................. 68
6.7 Ratings...........................................................................71
6.7.1 Thermal handling ratings................................... 71
6.7.2 Moisture handling ratings.................................. 71
6.7.3 ESD handling ratings.........................................71
6.7.4 Voltage and current operating ratings............... 72
7 Pin Diagrams and Pin Assignments......................................72
7.1 KW36A Signal Multiplexing and Pin Assignments.........72
7.2 KW36A Pinouts..............................................................75
7.3 KW35A Signal Multiplexing and Pin Assignments.........78
7.4 KW35A Pinouts..............................................................81
7.5 KW34A Signal Multiplexing and Pin Assignments.........83
7.6 KW34A Pinouts..............................................................86
7.7 Module Signal Description Tables................................. 87
7.7.1 Core Modules.................................................... 87
7.7.2 Radio Modules...................................................88
7.7.3 System Modules................................................ 89
7.7.4 Clock Modules................................................... 90
7.7.5 Analog Modules.................................................90
7.7.6 Timer Modules...................................................91
7.7.7 Communication Interfaces.................................92
7.7.8 Human-Machine Interfaces(HMI)...................... 93
8 Package Information............................................................. 94
8.1 Obtaining package dimensions......................................94
9 Part identification...................................................................94
9.1 Description.....................................................................94
9.2 Format........................................................................... 95
9.3 Fields............................................................................. 95
9.4 Example.........................................................................95
10 Revision History.................................................................... 96
4MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020
NXP Semiconductors
1 Introduction
The KW36A/35A/34A wireless microcontrollers (MCU), which includes the KW36A,
KW35A, and KW34A families of devices, are highly integrated single-chip devices
that enable Bluetooth Low Energy (Bluetooth LE) and Generic FSK connectivity for
automotive embedded systems. To meet the stringent requirements of automotive
applications, the KW36A/35A/34A is fully AEC Q100 Grade 2 Automotive
Qualified. The target applications center on wirelessly bridging the embedded world
with mobile devices to enhance the human interface experience, share embedded data
between devices and the cloud and enable wireless firmware updates. Leading the
automotive applications is the Digital Key, where a smartphone can be used by the
owner as an alternative to the key FOB for unlocking and personalizing the driving
experience. For a car sharing experience, the owner can provide selective, temporary
authorization for access to the car allowing the authorized person to unlock, start and
operate the car using their mobile device using Bluetooth LE.
The KW36A/35A/34A Wireless MCU integrates an Arm® Cortex®-M0+ CPU with
up to 512 KB flash and 64 KB SRAM and a 2.4 GHz radio that supports Bluetooth LE
5.0 and Generic FSK modulations. The Bluetooth LE radio supports up to 8
simultaneous connections in any master/slave combination. The Medical Body Area
Network (MBAN) frequencies from 2.36 to 2.4 GHz are also supported enabling
wearable or implantable wireless medical devices.
The KW36A includes an integrated FlexCAN module enabling seamless integration
into a cars in-vehicle CAN communication network. The FlexCAN module can
support CAN’s flexible data-rate (CAN FD) protocol for increased bandwidth and
lower latency required by many automotive applications.
The KW36A/35A/34A devices can be used as a "BlackBox" modem in order to add
Bluetooth LE or Generic FSK connectivity to an existing host MCU or MPU
(microprocessor), or may be used as a standalone smart wireless sensor with
embedded application where no host controller is required.
The RF circuit of the KW36A/35A/34A is optimized to require very few external
components, achieving the smallest RF footprint possible on a printed circuit board.
Extremely long battery life is achieved through the efficiency of code execution in the
Cortex-M0+ CPU core and the multiple low power operating modes of the
KW36A/35A/34A. For power critical applications, an integrated DC-DC converter
enables operation from a single coin cell or Li-ion battery with a significant reduction
of peak receive and transmit current consumption.
Introduction
MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020 5
NXP Semiconductors
2 Feature Descriptions
This section provides a simplified block diagram and highlights the KW36A/35A/34A
features.
2.1 Block Diagram
DCDC
VDCDC_IN
Crossbar-Lite Switch (AXBS)
SRAM
Flash
Arm Cortex M0+ Core
NVIC WIC
IOPORT
DAP
MTB
GPIO BME
Flash AIPS-Lite
MDM
DWT
RTC
LPTMR
PIT
SIM
RCM
PMC
SMC LPUART x2
ADC
Unified Bus
M0
S0
S1
Serial Wire Debug
IPS
AHBLite
S2
Controller
IPS
256 KB
FlexNVM
32K Osc
MCG
FLL IRC
32 kHz
IRC
4 MHz
DMA MUX
4ch DMA
AHBLite
CMP
FlexCAN
TPM x3
32M Osc
VREF
I2C x2
CMT
256 KB
64 KByte
TRNG
APB
SPI x2
M2A
Radio
LTC(AESA)
8 KB
FlexRAM
Figure 1. KW36 Detailed Block Diagram
Feature Descriptions
6MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020
NXP Semiconductors
DCDC
VDCDC_IN
Crossbar-Lite Switch (AXBS)
SRAM
Flash
Arm Cortex M0+ Core
NVIC WIC
IOPORT
DAP
MTB
GPIO BME
Flash AIPS-Lite
MDM
DWT
RTC
LPTMR
PIT
SIM
RCM
PMC
SMC LPUART
ADC
Unified Bus
M0
S0
S1
Serial Wire Debug
IPS
AHBLite
S2
Controller
IPS
Prg Acc RAM
8 KB
32K Osc
MCG
FLL IRC
32 kHz
IRC
4 MHz
DMA MUX
4ch DMA
AHBLite
CMP TPM x3
32M Osc
VREF
I2C x2
CMT
512 KB
64 KByte
TRNG
APB
SPI x2
M2A
Radio
LTC(AESA)
Figure 2. KW35 Detailed Block Diagram
DCDC
VDCDC_IN
Crossbar-Lite Switch (AXBS)
SRAM
Flash
Arm Cortex M0+ Core
NVIC WIC
IOPORT
DAP
MTB
GPIO BME
Flash AIPS-Lite
MDM
DWT
RTC
LPTMR
PIT
SIM
RCM
PMC
SMC LPUART
ADC
Unified Bus
M0
S0
S1
Serial Wire Debug
IPS
AHBLite
S2
Controller
IPS
FlexNVM
256 KB
FlexRAM
8 KB
32K Osc
MCG
FLL IRC
32 kHz
IRC
4 MHz
DMA MUX
4ch DMA
AHBLite
CMP TPM x3
32M Osc
VREF
I2C x2
CMT
256 KB
64 KByte
TRNG
APB
SPI x2
M2A
Radio
LTC(AESA)
Figure 3. KW34 Detailed Block Diagram
2.2 Radio features
Operating frequencies:
2.4 GHz ISM band (2400-2483.5 MHz)
Medical Body Area Network (MBAN) 2360-2400 MHz
Supported standards:
Feature Descriptions
MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020 7
NXP Semiconductors
Bluetooth Low Energy Version 5.0 compliant radio
Generic FSK modulation supporting data rates up to 1 Mbit/s
Support for up to 8 simultaneous Bluetooth LE hardware connections in any
master, slave combination
Bluetooth LE Application Profiles
Receiver performance:
Receive sensitivity of up to –95 dBm for Bluetooth LE
Receive sensitivity of up to –99 dBm for a 250 kbit/s GFSK mode with a
modulation index of 0.5. Receive sensitivity in Generic FSK modes depends on
mode selection and data rate.
Other features:
Programmable transmit output power from –30 dBm to +5 dBm
26 MHz and 32 MHz crystals supported for Bluetooth LE and Generic FSK modes
Bluetooth Low Energy version 5.0 Link Layer hardware with 1 Mbit/s PHY
support
Hardware acceleration for Generic FSK packet processing
Generic FSK modulation at 250, 500 and 1000 kbit/s
Supports 8 simultaneous Bluetooth LE connections in any master/slave
combination
Enhanced Bluetooth LE automatic deep sleep modes (DSM) supporting Slave
Latency
Up to 26 devices supported by whitelist in hardware
Up to 8 private resolvable addresses supported in hardware
Supports DMA capture of IQ data with sampling rate of up to 2 MHz, when using a
32 MHz crystal
Integrated on-chip balun
Single ended bidirectional RF port shared by transmit and receive
Low external component count
Supports transceiver range extension using external PA and/or LNA
2.3 Microcontroller features
Arm Cortex-M0+ CPU
Up to 48 MHz CPU
Feature Descriptions
8MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020
NXP Semiconductors
As compared to Cortex-M0, the Cortex-M0+ uses an optimized 2-stage pipeline
microarchitecture for reduced power consumption and improved architectural
performance (cycles per instruction)
Supports up to 32 interrupt request sources
Binary compatible instruction set architecture with the Cortex-M0 core
Thumb instruction set combines high code density with 32-bit performance
Serial Wire Debug (SWD) reduces the number of pins required for debugging
Micro Trace Buffer (MTB) provides lightweight program trace capabilities using
system RAM as the destination memory
Nested Vectored Interrupt Controller (NVIC)
32 vectored interrupts, 4 programmable priority levels
Includes a single non-maskable interrupt
Wake-up Interrupt Controller (WIC)
Supports interrupt handling when system clocking is disabled in low-power
modes
Takes over and emulates the NVIC behavior when correctly primed by the NVIC
on entry to very-deep-sleep
A rudimentary interrupt masking system with no prioritization logic signals for
wake-up as soon as a non-masked interrupt is detected
Debug Controller
Two-wire Serial Wire Debug (SWD) interface
Hardware breakpoint unit for 2 code addresses
Hardware watchpoint unit for 2 data items
Micro Trace Buffer for program tracing
On-Chip Memory
Up to 512 KB Flash
KW36A/34A contains 256 KB program flash with ECC and 256 KB
FlexNVM.
KW35A contains 512 KB program flash with ECC.
Flash implemented as two equal blocks each of 256 KB block. Code can
execute or read from one block while the other block is being erased or
programmed on KW35A only.
Firmware distribution protection. Program flash can be marked execute-only
on a per-sector (8 KB) basis to prevent firmware contents from being read by
third parties.
Feature Descriptions
MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020 9
NXP Semiconductors
64 KB SRAM
KW36A/34A contains 8 KB FlexRAM.
KW35A contains 8 KB program acceleration RAM.
Security circuitry to prevent unauthorized access to RAM and flash contents
through the debugger
2.4 System features
Power Management Control Unit (PMC)
Programmable power saving modes
Available wake-up from power saving modes via internal and external sources
Integrated Power-on Reset (POR)
Integrated Low Voltage Detect (LVD) with reset (brownout) capability
Selectable LVD trip points
Programmable Low Voltage Warning (LVW) interrupt capability
Individual peripheral clocks can be gated off to reduce current consumption
Internal Buffered bandgap reference voltage
Factory programmed trim for bandgap and LVD
1 kHz Low-power Oscillator (LPO)
DC-DC Converters
Internal switched mode power supply supporting Buck and Bypass operating
modes
Buck operation supports external voltage sources of 2.1 V to 3.6 V
When DC-DC is not used, the device supports an external voltage range of 1.5 V to
3.6 V (1.5 - 3.6 V on VDD_RF1, VDD_RF2, VDD_RF3 and
VDD_1P5OUT_PMCIN pins. 1.71 - 3.6 V on VDD_0, VDD_1, and VDDA pins)
An external inductor is required to support the Buck mode
Direct Memory Access (DMA) Controller
All data movement via dual-address transfers: read from source, write to
destination
Programmable source and destination addresses and transfer size
Support for enhanced addressing modes
4-channel implementation that performs complex data transfers with minimal
intervention from a host processor
Internal data buffer, used as temporary storage to support 16- and 32-byte transfers
Connections to the crossbar switch for bus mastering the data movement
Feature Descriptions
10 MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020
NXP Semiconductors
Transfer Control Descriptor (TCD) organized to support two-deep, nested transfer
operations
32-byte TCD stored in local memory for each channel
An inner data transfer loop defined by a minor byte transfer count
An outer data transfer loop defined by a major iteration count
Channel activation via one of three methods:
Explicit software initiation
Initiation via a channel-to-channel linking mechanism for continuous
transfers
Peripheral-paced hardware requests, one per channel
Fixed-priority and round-robin channel arbitration
Channel completion reported via optional interrupt requests
One interrupt per channel, optionally asserted at completion of major iteration
count
Optional error terminations per channel and logically summed together to form
one error interrupt to the interrupt controller
Optional support for scatter/gather DMA processing
Support for complex data structures
DMA Channel Multiplexer (DMA MUX)
4 independently selectable DMA channel routers
2 periodic trigger sources available
Each channel router can be assigned to 1 of the peripheral DMA sources
COP Watchdog Module
Independent clock source input (independent from CPU/bus clock)
Choice between two clock sources
LPO oscillator
Bus clock
System Clocks
Both 26 MHz and 32 MHz crystal reference oscillator supported for Bluetooth LE
and Generic FSK modes
MCU can derive its clock either from the crystal reference oscillator or the
Frequency-locked Loop (FLL)1
32.768 kHz crystal reference oscillator used to maintain precise Bluetooth Low
Energy timing in low-power modes
Multipurpose Clock Generator (MCG)
1. Clock options can have restrictions based on the chosen SoC configuration.
Feature Descriptions
MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020 11
NXP Semiconductors
Internal reference clocks — Can be used as a clock source for other on-chip
peripherals
On-chip RC oscillator range of 31.25 kHz to 39.0625 kHz with 2% accuracy
across full temperature range
On-chip 4 MHz oscillator with 5% accuracy across full temperature range
Frequency-locked Loop (FLL) controlled by internal or external reference
20 MHz to 48 MHz FLL output
Unique Identifiers
80-bit Unique ID represents a unique identifier for each chip
40-bit unique Media Access Control (MAC) address, which can be used to build a
unique 48-bit Bluetooth Low Energy MAC address
2.5 Peripheral features
16-bit Analog-to-Digital Converter (ADC)
Linear successive approximation algorithm with 16-bit resolution
Output formatted in differential-ended 16-, 13-, 11-, and 9-bit mode
Output formatted in single-ended 16-, 12-, 10-, and 8-bit mode
Single or continuous conversion
Configurable sample time and conversion speed/power
Conversion rates in 16-bit mode with no averaging up to ~500Ksamples/sec
Input clock selection
Operation in low-power modes for lower noise operation
Asynchronous clock source for lower noise operation
Selectable asynchronous hardware conversion trigger
Automatic compare with interrupt for less-than, or greater than, or equal to
programmable value
Temperature sensor
Battery voltage measurement
Hardware average function
Selectable voltage reverence
Self-calibration mode
High-Speed Analog Comparator (CMP)
6-bit DAC programmable reference generator output
Up to eight selectable comparator inputs; each input can be compared with any
input by any polarity sequence
Feature Descriptions
12 MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020
NXP Semiconductors
Selectable interrupt on rising edge, falling edge, or either rising or falling edges of
comparator output
Two performance modes:
Shorter propagation delay at the expense of higher power
Low-power, with longer propagation delay
Operational in all MCU power modes except VLLS0 mode
Voltage Reference(VREF1)
Programmable trim register with 0.5 mV steps, automatically loaded with factory
trimmed value upon reset
Programmable buffer mode selection:
Off
Bandgap enabled/standby (output buffer disabled)
High-power buffer mode (output buffer enabled)
1.2 V output at room temperature
VREF_OUT output signal
Low-power Timer (LPTMR)
One channel
Operation as timer or pulse counter
Selectable clock for prescaler/glitch filter
1 kHz internal LPO
External low-power crystal oscillator
Internal reference clock
Configurable glitch filter or prescaler
Interrupt generated on timer compare
Hardware trigger generated on timer compare
Functional in all power modes
Timer/PWM (TPM)
TPM0: 4 channels, TPM1 and TPM2: 2 channels each
Selectable source clock
Programmable prescaler
16-bit counter supporting free-running or initial/final value, and counting is up or
up-down
Input capture, output compare, and edge-aligned and center-aligned PWM modes
Input capture and output compare modes
Generation of hardware triggers
TPM1 and TPM2: Quadrature decoder with input filters
Global time base mode shares single time base across multiple TPM instances
Feature Descriptions
MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020 13
NXP Semiconductors
Programmable Interrupt Timer (PIT)
Up to 2 interrupt timers for triggering ADC conversions
32-bit counter resolution
Clocked by bus clock frequency
Real-Time Clock (RTC)
32-bit seconds counter with 32-bit alarm
Can be invalidated on detection of tamper detect
16-bit prescaler with compensation
Register write protection
Hard Lock requires MCU POR to enable write access
Soft lock requires POR or software reset to enable write/read access
Capable of waking up the system from low-power modes
Inter-Integrated Circuit (I2C)
Two channels
Compatible with I2C bus standard and SMBus Specification Version 2 features
Up to 400 kHz operation
Multi-master operation
Software programmable for one of 64 different serial clock frequencies
Programmable slave address and glitch input filter
Interrupt driven byte-by-byte data transfer
Arbitration lost interrupt with automatic mode switching from master to slave
Calling address identification interrupt
Bus busy detection broadcast and 10-bit address extension
Address matching causes wake-up when processor is in low-power mode
LPUART
One channel (2 channels on KW36A)
Full-duplex operation
Standard mark/space Non-return-to-zero (NRZ) format
13-bit baud rate selection with fractional divide of 32
Programmable 8-bit or 9-bit data format
Programmable 1 or 2 stop bits
Separately enabled transmitter and receiver
Programmable transmitter output polarity
Programmable receive input polarity
13-bit break character option
11-bit break character detection option
Feature Descriptions
14 MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020
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Two receiver wake-up methods:
Idle line wake-up
Address mark wake-up
Address match feature in receiver to reduce address mark wake-up ISR overhead
Interrupt or DMA driven operation
Receiver framing error detection
Hardware parity generation and checking
Configurable oversampling ratio to support from 1/4 to 1/32 bit-time noise
detection
Operation in low-power modes
Hardware Flow Control RTS\CTS
Functional in Stop/VLPS modes
Break detect supporting LIN
Serial Peripheral Interface (SPI)
Two independent SPI channels
Master and slave mode
Full-duplex, three-wire synchronous transfers
Programmable transmit bit rate
Double-buffered transmit and receive data registers
Serial clock phase and polarity options
Slave select output
Control of SPI operation during wait mode
Selectable MSB-first or LSB-first shifting
Support for both transmit and receive by DMA
Carrier Modulator Timer (CMT)
Four modes of operation
Time; with independent control of high and low times
Baseband
Frequency shift key (FSK)
Direct software control of CMT_IRO signal
Extended space operation in time, baseband, and FSK modes
Selectable input clock divider
Interrupt on end of cycle
Ability to disable CMT_IRO signal and use as timer interrupt
General Purpose Input/Output (GPIO)
Hysteresis and configurable pull up device on all input pins
Independent pin value register to read logic level on digital pin
Feature Descriptions
MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020 15
NXP Semiconductors
All GPIO pins can generate IRQ and wake-up events
Configurable drive strength on some output pins
GPIO can be configured to function as a interrupt driven keyboard scanning matrix
In the 48-pin package there are a total of 25 digital pins
In the 40-pin package there are a total of 18 digital pins
FlexCAN (for KW36A only)
Full implementation of the CAN with Flexible Data Rate (CAN FD) protocol
specification and CAN protocol specification, Version 2.0 B
Flexible Message Buffers (MBs); there are total 32 MBs of 8 bytes data length
each, configurable as Rx or Tx, all supporting standard and extended messages
Programmable clock source to the CAN Protocol Interface, either peripheral clock
or oscillator clock
Capability to select priority between mailboxes and Rx FIFO during matching
process
Powerful Rx FIFO ID filtering, capable of matching incoming IDs against either
128 extended, 256 standard, or 512 partial (8 bit) IDs, with up to 32 individual
masking capability
2.6 Security Features
Advanced Encryption Standard Accelerator(AES-128 Accelerator)
The Advanced Encryption Standard Accelerator (AESA) module is a standalone
hardware coprocessor capable of accelerating the 128-bit advanced encryption standard
(AES) cryptographic algorithms.
The AESA engine supports the following cryptographic features.
LTC includes the following features:
Cryptographic authentication
Message Authentication Codes (MAC)
Cipher-based MAC (AES-CMAC)
Extended cipher block chaining message authentication code (AES-
XCBC-MAC)
Auto padding
Integrity Check Value(ICV) checking
Authenticated encryption algorithms
Counter with CBC-MAC (AES-CCM)
Symmetric key block ciphers
Feature Descriptions
16 MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020
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AES (128-bit keys)
Cipher modes:
AES-128 modes
Electronic Codebook (ECB)
Cipher Block Chaining (CBC)
Counter (CTR)
Secure scan
True Random Number Generator (TRNG)
True Random Number Generator (TRNG) is a hardware accelerator module that
constitutes a high-quality entropy source.
TRNG generates a 512-bit (4x 128-bit) entropy as needed by an entropy-
consuming module, such as a deterministic random number generator.
TRNG output can be read and used by a deterministic pseudo-random number
generator (PRNG) implemented in software.
TRNG-PRNG combination achieves NIST-compliant true randomness and
cryptographic-strength random numbers using the TRNG output as the entropy
source.
A fully FIPS 180 compliant solution can be realized using the TRNG together
with a FIPS-compliant deterministic random number generator and the SoC-level
security.
Flash Memory Protection
The on-chip flash memory controller enables the following useful features:
Program flash protection scheme prevents accidental program or erase of stored
data.
Automated, built-in, program and erase algorithms with verify.
Read access to one program flash block is possible while programming or erasing
data in the other program flash block.
3Transceiver Description
Direct Conversion Receiver (Zero IF)
Constant Envelope Transmitter
2.36 GHz to 2.483 GHz PLL Range
Low Transmit and Receive Current Consumption
Low BOM
Transceiver Description
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3.1 Key Specifications
KW36A/35A/34A meets or exceeds all Bluetooth Low Energy version 5.0 performance
specifications. The key specifications for the KW36A/35A/34A are:
Frequency Band:
ISM Band: 2400 to 2483.5 MHz
MBAN Band: 2360 to 2400 MHz
Bluetooth Low Energy version 5.0 modulation scheme:
Symbol rate: 1000 kbit/s
Modulation: GFSK
Receiver sensitivity: –95 dBm, typical
Programmable transmitter output power: –30 dBm to +5 dBm
Generic FSK modulation scheme:
Symbol rate: 250, 500 and 1000 kbit/s
Modulation(s): GFSK (modulation index = 0.32, 0.5, 0.7 and 1.0, BT =0.3, 0.5, and
0.7), FSK and MSK
Receiver Sensitivity: Mode and data rate dependent. –99 dBm typical for GFSK
(r=250 kbit/s, BT = 0.5, h = 0.5)
3.2 Channel Map Frequency Plans
3.2.1 Channel Plan for Bluetooth Low Energy
This section describes the frequency plan / channels associated with 2.4 GHz ISM and
MBAN bands for Bluetooth Low Energy.
2.4 GHz ISM Channel numbering:
Fc=2402 + k * 2 MHz, k=0,.........,39.
MBAN Channel numbering:
Fc=2360 + k in MHz, for k=0,.....,39
Transceiver Description
18 MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020
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where k is the channel number.
Table 1. 2.4 GHz ISM and MBAN frequency plan and channel designations
2.4 GHz ISM1MBAN22.4GHz ISM + MBAN
Channel Freq (MHz) Channel Freq (MHz) Channel Freq (MHz)
0 2402 0 2360 28 2390
1 2404 1 2361 29 2391
2 2406 2 2362 30 2392
3 2408 3 2363 31 2393
4 2410 4 2364 32 2394
5 2412 5 2365 33 2395
6 2414 6 2366 34 2396
7 2416 7 2367 35 2397
8 2418 8 2368 36 2398
9 2420 9 2369 0 2402
10 2422 10 2370 1 2404
11 2424 11 2371 2 2406
12 2426 12 2372 3 2408
13 2428 13 2373 4 2410
14 2430 14 2374 5 2412
15 2432 15 2375 6 2414
16 2434 16 2376 7 2416
17 2436 17 2377 8 2418
18 2438 18 2378 9 2420
19 2440 19 2379 10 2422
20 2442 20 2380 11 2424
21 2444 21 2381 12 2426
22 2446 22 2382 13 2428
23 2448 23 2383 14 2430
24 2450 24 2384 15 2432
25 2452 25 2385 16 2434
26 2454 26 2386 17 2436
27 2456 27 2387 18 2438
28 2458 28 2388 19 2440
29 2460 29 2389 20 2442
30 2462 30 2390 21 2444
31 2464 31 2391 22 2446
32 2466 32 2392 23 2448
33 2468 33 2393 24 2450
34 2470 34 2394 25 2452
Table continues on the next page...
Transceiver Description
MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020 19
NXP Semiconductors
Table 1. 2.4 GHz ISM and MBAN frequency plan and channel designations (continued)
2.4 GHz ISM1MBAN22.4GHz ISM + MBAN
Channel Freq (MHz) Channel Freq (MHz) Channel Freq (MHz)
35 2472 35 2395 26 2454
36 2474 36 2396 27 2456
37 2476 37 2397 37 2476
38 2478 38 2398 38 2478
39 2480 39 2399 39 2480
1. ISM frequency of operation spans from 2400.0 MHz to 2483.5 MHz
2. Per FCC guideline rules, Bluetooth Low Energy single mode operation is allowed in these channels.
3.2.2 Other Channel Plans
The RF synthesizer can be configured to use any channel frequency between 2.36 and
2.487 GHz.
3.3 Transceiver Functions
Receive
The receiver architecture is Zero IF (ZIF) where the received signal after passing
through RF front end is down-converted to a baseband signal. The signal is filtered and
amplified before it is fed to analog-to-digital converter. The digital signal then
decimates to a baseband clock frequency before it digitally processes, demodulates and
passes on to packet processing/link-layer processing.
Transmit
The transmitter transmits GFSK/FSK modulation having power and channel selection
adjustment per user application. After the channel of operation is determined, coarse
and fine-tuning is executed within the Frac-N PLL to engage signal lock. After signal
lock is established, the modulated buffered signal is routed to a multi-stage amplifier for
transmission..
4Transceiver Electrical Characteristics
Transceiver Electrical Characteristics
20 MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020
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4.1 Radio operating conditions
Table 2. Radio operating conditions
Characteristic Symbol Min Typ Max Unit
Input Frequency fin 2.360 2.480 GHz
Ambient Temperature Range TA–40 25 105 °C
Maximum RF Input Power Pmax 10 dBm
Crystal Reference Oscillator Frequency
1
fref 26 MHz or 32 MHz
1. The recommended crystal accuracy is ±40 ppm including initial accuracy, mechanical, temperature, and aging factors.
4.2 Receiver Feature Summary
Table 3. Top-Level Receiver Specifications (TA=25 °C, nominal process unless otherwise
noted)
Characteristic1Symbol Min. Typ. Max. Unit
Supply current power down on VDD_RFx supplies Ipdn 200 1000 nA
Supply current Rx On with DC-DC converter enable
(Buck; VDCDC_IN = 3.6 V, VDD_1P5_buck=1.5 V) , 2IRxon 6.3 mA
Supply current Rx On with DC-DC converter disabled
(Bypass) 2IRxon 17.2 mA
Input RF Frequency fin 2.360 2.4835 GHz
GFSK Rx Sensitivity(250 kbit/s GFSK-BT=0.5, h=0.5) SENSGFSK –99 dBm
Bluetooth LE Rx Sensitivity 3SENSBLE –95 dBm
Noise Figure for maximum gain mode @ typical
sensitivity
NFHG 7.5 dB
Receiver Signal Strength Indicator Range4RSSIRange –100 55dBm
Receiver Signal Strength Indicator Resolution RSSIRes 1 dB
Typical RSSI variation over frequency –2 2 dB
Typical RSSI variation over temperature –2 2 dB
Narrowband RSSI accuracy6RSSIAcc –3 3 dB
Bluetooth LE Co-channel Interference (Wanted signal at
–67 dBm, BER <0.1%. Measurement resolution 1
MHz).
–7 dB
Adjacent/Alternate Channel Performance7
Bluetooth LE Adjacent +/–1 MHz Interference offset
(Wanted signal at –67 dBm, BER <0.1%. Measurement
resolution 1 MHz.)
SELBLE, 1 MHz 2 dB
Table continues on the next page...
Transceiver Electrical Characteristics
MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020 21
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Table 3. Top-Level Receiver Specifications (TA=25 °C, nominal process unless otherwise
noted) (continued)
Characteristic1Symbol Min. Typ. Max. Unit
Bluetooth LE Adjacent +/–2 MHz Interference offset
(Wanted signal at –67 dBm, BER <0.1%. Measurement
resolution 1 MHz.)
SELBLE, 2 MHz 43 dB
Bluetooth LE Alternate +/–3 MHz Interference offset
(Wanted signal at –67 dBm, BER <0.1%. Measurement
resolution 1 MHz.)
SELBLE, 3 MHz 50 dB
Bluetooth LE Alternate ≥ +/–4 MHz Interference offset
(Wanted signal at –67 dBm, BER <0.1%. Measurement
resolution 1 MHz.)
SELBLE, 4+ MHz 50 dB
Intermodulation Performance
Bluetooth LE Intermodulation with continuous wave
interferer at ± 3 MHz and modulated interferer is at ± 6
MHz (Wanted signal at –67 dBm, BER<0.1%.)
–23 dBm
Bluetooth LE Intermodulation with continuous wave
interferer at ±5 MHz and modulated interferer is at ±10
MHz (Wanted signal at –67 dBm, BER<0.1%.)
–24 dBm
Blocking Performance
Bluetooth LE Out of band blocking from 30 MHz to 1000
MHz and 4000 MHz to 5000 MHz (Wanted signal at –67
dBm, BER<0.1%. Interferer continuous wave signal.)8
–2 dBm
Bluetooth LE Out of band blocking from 1000 MHz to
2000 MHz and 3000 MHz to 4000 MHz (Wanted signal
at –67 dBm, BER<0.1%. Interferer continuous wave
signal.)
–8.4 dBm
Bluetooth LE Out of band blocking from 2001 MHz to
2339 MHz and 2484 MHz to 2999 MHz (Wanted signal
at –67 dBm, BER<0.1%. Interferer continuous wave
signal.)9
–17 dBm
Bluetooth LE Out of band blocking from 5000 MHz to
12750 MHz (Wanted signal at –67 dBm, BER<0.1%.
Interferer continuous wave signal.)9
10 dBm
Spurious Emission < 1.6 MHz offset (Measured with
100 kHz resolution and average detector. Device
transmit on RF channel with center frequency fc and
spurious power measured in 1 MHz at RF frequency f),
where |f-fc|< 1.6 MHz
–54 dBc
Spurious Emission > 2.5 MHz offset (Measured with
100 kHz resolution and average detector. Device
transmit on RF channel with center frequency fc and
spurious power measured in 1 MHz at RF frequency f),
where |f-fc|> 2.5 MHz10
–70 dBc
1. All the Rx parameters are measured at the KW36A/35A/34A RF pins.
2. Transceiver power consumption.
3. Measured at 0.1% BER using 37 byte long packets in maximum gain mode and nominal conditions.
4. Narrow-band RSSI mode.
5. With RSSI_CTRL_0.RSSI_ADJ field calibrated to account for antenna to RF input losses.
6. With one point calibration over frequency and temperature.
Transceiver Electrical Characteristics
22 MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020
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7. Bluetooth LE adjacent and alternate selectivity performance is measured with modulated interference signals.
8. Exceptions allowed for carrier frequency sub harmonics.
9. Exceptions allowed for carrier frequency harmonics.
10. Exceptions allowed for twice the reference clock frequency(fref) multiples.
Table 4. Receiver Specifications with Generic FSK Modulations
Adjacent/Alternate Channel Selectivity (dB)1
Modulation
Type
Data
Rate
(kbit/s)
Channel
BW (kHz)
Typical
Sensitivity
(dBm)
Desired
signal
level
(dBm)
Interferer
at –/+1*
channel
BW
offset
Interferer
at –/+ 2*
channel
BW
offset
Interferer
at –/+ 3*
channel
BW
offset
Interferer
at –/+ 4*
channel
BW
offset
Co-
channel
GFSK BT =
0.5, h=0.5
1000 2000 –95 –67 43 50 55 50 –7
500 1000 –97 –85 40 50 55 55 –7
250 500 –99 –85 30 40 50 50 –7
GFSK, BT =
0.5, h=0.3
1000 1000 –89 –67 10 38 42 47 –10
500 800 –92 –85 22 31 37 42 –10
250 500 –93 –85 20 25 30 34 –13
GFSK, BT =
0.5, h=0.7
1000 2000 –97 –85 45 50 57 60 –7
500 1000 –98 –85 40 50 55 55 –7
250 600 –99 –85 30 40 50 50 –7
GMSK
BT=0.3
1000 1600 –91 –85 40 46 53 55 –8
500 800 –93 –85 35 46 50 53 –7
250 500 –95 –85 30 40 40 50 –7
GMSK, BT =
0.7
1000 2000 –96 –85 44 53 57 60 –7
500 1000 –97 –85 40 50 55 55 –7
250 600 –99 –85 30 40 50 50 –7
Generic
MSK
1000 3000 –96 –85 43 53 60 63 –7
500 1600 –97 –85 43 50 60 60 –8
250 800 –99 –85 35 45 55 55 –7
GFSK
BT=0.5, h=1
1000 3000 –96 –85 45 55 55 59 –8
500 1400 –97 –85 40 45 50 50 –8
250 800 –98 –85 35 45 45 50 –8
1. Selectivity measured with an unmodulated blocker except for GFSK BT=0.5, h=0.5 1 Mbit/s and GFSK BT=0.5,
h=0.32 1 Mbit/s. The desired signal is set at –85 dBm.
4.3 Transmit and PLL Feature Summary
Supports constant envelope modulation of 2.4 GHz ISM and 2.36 GHz MBAN
frequency bands
Fast PLL Lock time: < 25 µs
Reference Frequency:
Transceiver Electrical Characteristics
MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020 23
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26 MHz and 32 MHz crystals supported for Bluetooth LE and Generic FSK
modes
Table 5. Top-Level Transmitter Specifications (TA=25 °C, nominal process unless otherwise
noted)
Characteristic1Symbol Min. Typ. Max. Unit
Supply current power down on VDD_RFx supplies Ipdn 200 nA
Supply current Tx On with PRF = 0 dBm and DC-DC
converter enabled (Buck; VDDDCDC_in = 3.6 V,
VDD_1P5_buck=1.5 V) , 2
ITxone 5.7 mA
Supply current Tx On with PRF = 0 dBm and DC-DC
converter disabled (Bypass) 2ITxond 16 mA
Supply current Tx On with PRF = +3.5 dBm and DC-DC
converter enabled (Buck; VDDDCDC_in = 3.6 V,
VDD_1P5_buck=1.5 V)2
ITX3.5dBm 6.9 mA
Supply current Tx On with PRF = +3.5 dBm and DC-DC
converter disabled (Bypass)2ITX3.5dBmb 19 mA
Supply current Tx On with PRF = +5 dBm and DC-DC
converter enabled (Buck; VDDDCDC_in = 3.6 V,
VDD_1P5_buck=1.55 V, LDO-HF bumped)2, 3
ITX5dBm 8.0 mA
Supply current Tx On with PRF = +5 dBm and DC-DC
converter disabled (Bypass, LDO-HF bumped)2, 3ITX5dBmb 21 mA
Output RF Frequency fRFout 2.360 2.4835 GHz
Maximum RF Output Power; LDO-HF bumped 4PRF,maxV +5 dBm
Maximum RF Output power, nominal power supply 5PRF,maxn +3.5 dBm
Minimum RF Output power, nominal power supply 5PRF,minn –30 dBm
RF Output power control range PRFCR 34 dB
Bluetooth LE Tx Output Spectrum 20dB BW TXBWBLE 1.0 MHz
Bluetooth LE average frequency deviation using a
00001111 modulation sequence
Δf1avg,BLE 250 kHz
Bluetooth LE average frequency deviation using a
01010101 modulation sequence
Δf2avg,BLE 220 kHz
Bluetooth LE RMS FSK Error FSKerr,BLE 3%
Bluetooth LE Maximum Deviation of the Center
Frequency6Fcdev,BLE ±3 kHz
Bluetooth LE Adjacent Channel Transmit Power at 2
MHz offset7PRF2MHz,BLE –55 dBm
Bluetooth LE Adjacent Channel Transmit Power at >= 3
MHz offset7PRF3MHz,BLE –59 dBm
Bluetooth LE Frequency Hopping Support YES
Second Harmonic of Transmit Carrier Frequency (Pout =
PRF,max), 8TXH2 –46 dBm/MHz
Third Harmonic of Transmit Carrier Frequency (Pout =
PRF,max)8TXH3 –58 dBm/MHz
1. All the Tx parameters are measured at test hardware SMA connector.
2. Transceiver power consumption.
Transceiver Electrical Characteristics
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3. VDD_RFx shall be equal to or higher than 1.55 V to support a TX Pout of +5 dBm.
4. Measured at KW36A/35A/34A RF pins, with BB_LDO_HF_TRIM=1.44 V.
5. Measured at the KW36A/35A/34A RF pins.
6. Maximum drift of carrier frequency of the PLL during a Bluetooth LE packet with a nominal 32 MHz reference crystal.
7. Measured at Pout = +5 dBm and recommended Tx match.
8. Harmonic levels based on recommended 2 component match. Transmit harmonic levels depend on the quality of
matching components. Additional harmonic margin using a third matching component (1x shunt capacitor) is possible.
Transmit PA driver output as a function of the PA_POWER[5:0] field when measured
at the IC pins is as follows:
Figure 4. TX Pout (dBm) as function TX-PA Power Code for default LDO-HF
Table 6. Transmit Output Power as a function of PA_POWER[5:0] with default LDO-HF
TX Pout (dBm)1
PA_POWER[5:0] T = –40 °C T = 25 °C T = 105 °C
1 –30.1 –31.1 –32.6
2 –24.0 –25.0 –26.4
4 –17.9 –19.0 –20.4
6 –14.5 –15.6 –17.0
8 –12.0 –13.1 –14.5
10 –10.1 –11.2 –12.6
12 –8.5 –9.6 –11.0
14 –7.2 –8.3 –9.7
16 –6.1 –7.2 –8.6
Table continues on the next page...
Transceiver Electrical Characteristics
MKW36A/35A/34A Data Sheet, Rev. 8, 05/2020 25
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Table 6. Transmit Output Power as a function of PA_POWER[5:0] with default LDO-HF
(continued)
TX Pout (dBm)1
PA_POWER[5:0] T = –40 °C T = 25 °C T = 105 °C
18 –5.1 –6.2 –7.6
20 –4.2 –5.3 –6.7
22 –3.4 –4.5 –5.9
24 –2.7 –3.8 –5.2
26 –2.0 –3.1 –4.5
28 –1.4 –2.5 –3.9
30 –0.8 –1.9 –3.3
32 –0.3 –1.4 –2.8
34 0.2 –1.0 –2.4
36 0.6 –0.5 –1.9
38 1.1 –0.1 –1.5
40 1.5 0.3 –1.1
42 1.9 0.7 –0.7
44 2.2 1.1 –0.3
46 2.6 1.4 0.0
48 2.9 1.8 0.3
50 3.2 2.1 0.6
52 3.5 2.4 0.9
54 3.7 2.6 1.2
56 3.9 2.9 1.5
58 4.2 3.1 1.7
60 4.4 3.3 1.9
62 4.5 3.5 2.1
1. Tx continuous wave power output at the RF pins with the recommended matching components mounted on PCB.
Transceiver Electrical Characteristics
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