KW45 32-Bit Bluetooth 5.3 MCUs | NXP Semiconductors

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KW45’s three-core architecture integrates a 96 MHz CM33 application core, dedicated CM3 radio core and an isolated EdgeLock Secure Enclave. The Flash-based radio core with dedicated SRAM delivers a highly configurable and upgradeable software-implemented radio, freeing resources on the main core for customer application space.

The Bluetooth Low Energy 5.3-compliant radio supports up to 24 simultaneous secure connections. The EdgeLock Secure Enclave’s isolated execution environment provides a set of cryptographic accelerators, key store operations and secure lifecycle management that minimizes main core security responsibilities.

The KW45 MCU additionally integrates FlexCAN, helping enable seamless integration into an automobile’s in-vehicle or industrial CAN communication network. The FlexCAN module can support CAN’s flexible data rate (CAN FD) for increased bandwidth and lower latency.

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KW45 Architecture
KW45 Device Features

KW45 Architecture

KW45 Device Features

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Features

Application Core

Up to 96 MHz Arm Cortex-M33 core
1 MB Program Flash
128 kB SRAM
Nested Vectored Interrupt Controller (NVIC)

Radio Core

Dedicated CM3 core
Secure 256 kB Flash for authenticated NXP Bluetooth Low Energy controller stack firmware
88 kB dedicated SRAM
2.4 GHz Bluetooth Low Energy Version 5.3 upgradeable radio supporting up to 24 simultaneous hardware connections in any central/peripheral combination
–106 dBm 125 kbps Long Range Receive Sensitivity
–102 dBm 500 kbps Long Range Receive Sensitivity
–97.5 dBm 1 Mbps Receive Sensitivity
–95 dBm 2 Mbps Receiver Sensitivity
Programmable Transmit Output Power up to +10 dBm
Data Rates: 125 kbps, 500 kbps, 1 Mbps and 2 Mbps
Modulation Types: 2 Level FSK, GFSK, MSK, GMSK
On-chip balun with single ended bidirectional RF port

EdgeLock Secure Enclave

Secure boot and debug
Symmetric Key Encryption - AES-128/192/256 and ECB, CBC, CTR, GCM, CMAC, and CCM Modes
Asymmetric Key Encryption - ECC NIST P–192/224/256/384/521, Curve25519
Key Exchange algorithms - ECDH(E), SPAKE2+, JPAKE
Secure Key Generation, Storage and Management
Flash access protection and optional encryption on-the-fly decryption using a PRINCE XEX block cipher mode

Low Power Consumption

Transceiver current (DC-DC buck mode, 3.3 V supply)

Typical RX: 4.7 mA
Typical TX at 0 dBm: 4.6 mA and 18.7 mA at 10 dBm

Multiple power-down modes supporting currents as low as 300 nA
Ultra-low leakage Smart Power Switch with less than 100 nA sleep current with exit from internal timer or GPIO

Clocks

32 MHz supported for Bluetooth LE and Generic FSK modes
32.768 kHz Crystal Oscillator

Operating Characteristics

Temperature range (ambient): –40 °C to 105 °C •
Temperature range (junction): –40 °C to 125 °C • DC/DC voltage range: 1.8 V to 3.6 V
Bypass voltage range: 1.8 V to 3.6 V
Qualification: AEC-Q100 Grade 2

Human-Machine Interface

22 General-purpose input/output (GPIO) (40HVQFN)
29 GPIO (48HVQFN)

System Peripherals

DC/DC converter supporting buck and bypass operating modes
Asynchronous DMA controller with per channel access permissions (secure/non-secure)
Wake-up unit for power-down modes

Analog Modules

16-bit single ended SAR analog-to-digital converter (ADC) up to 2 Msps
Two high-speed analog comparators (CMP) with 8-bit digital-to-analog converter (DAC)
1.0 V to 2.1 V Voltage Reference (Vref)

Timers

Two 6-channel 32-bit timers (TPM) with PWM capability and DMA support
Two 32-bit low-power timers (LPTMR) or pulse counters with compare features
4-channel 32-bit low-power periodic interrupt timer (LPIT) with DMA support
One 56-bit timestamp timer
32-bit seconds real time counter (RTC) with 32-bit alarm and independent power supply
Signal frequency analyzer (SFA) provides facilities for measurement of clock period/frequency as well as time between triggers

Communication Interfaces

FlexCAN with CAN and CAN FD supporting the full implementation of the CAN Specification Version 2.0, Part B. FD Support
Two Low Power UART (LPUART) modules with LIN support
Two Low Power SPI modules and one MIPI-I3C module
Two Low Power I²C (LPI2C) modules supporting the System Management Bus (SMBus) Specification, version 2
One programmable FlexIO module supporting emulation of UART, I²C, SPI, Camera IF, LCD RGB, PWM/ Waveform generation

Packaging

6 x 6 mm 40HVQFN with “Wettable” flanks
7 x 7 mm 48HVQFN with “Wettable” flanks

Part numbers include: KW45B41Z52AFPBT, KW45B41Z52AFTBT, KW45B41Z53AFPBT, KW45B41Z53AFTBT, KW45B41Z82AFPBT, KW45B41Z82AFTBT, KW45B41Z83AFPBT, KW45B41Z83AFTBT, KW45Z41052AFPBT, KW45Z41052AFTBT, KW45Z41053AFPBT, KW45Z41053AFTBT, KW45Z41082AFPBT, KW45Z41082AFTBT, KW45Z41083AFPBT, KW45Z41083AFTBT.

Product Program

EdgeLock® Assurance

The KW45 MCUs, part of the EdgeLock Assurance program, are designed to meet industry standards and follow NXP's security-by-design approach.

Buy/Parametrics

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Design Resources

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KW45 BXL Files

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KW45: 32-Bit Bluetooth® 5.3 Long-Range MCUs with CAN FD and LIN Bus Options, Arm® Cortex®-M33 Core

Product Details

Block Diagram

KW45 Architecture

KW45 Device Features

Features

Application Core

Radio Core

EdgeLock Secure Enclave

Low Power Consumption

Clocks

Operating Characteristics

Human-Machine Interface

System Peripherals

Analog Modules

Timers

Communication Interfaces

Packaging

Product Program

EdgeLock® Assurance

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KW45: 32-Bit Bluetooth^® 5.3 Long-Range MCUs with CAN FD and LIN Bus Options, Arm^® Cortex^®-M33 Core