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MCX W70 Secure and Ultra-Low-Power MCUs for Bluetooth® Channel Sounding, Matter, Thread and Zigbee

MCX-W70 new

Preproduction

This page contains information on a preproduction product. Specifications and information herein are subject to change without notice. For additional information please contact your sales representative.

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The MCX W70 family features a 96 MHz Arm® Cortex®-M33 core coupled with a multiprotocol radio subsystem supporting Matter, Thread, Zigbee and Bluetooth® Low Energy (LE). It is a Bluetooth 6.x-enabled wireless MCU designed for automotive and industrial applications. It supports Bluetooth Channel Sounding (BCS) for precise and secure distance measurement, achieving 20-50 cm accuracy, which is ideal for smart entry systems. MCX W70 delivers robust security with advanced encryption and secure pairing, next-generation Bluetooth LE capabilities, optimized system performance through its multi-core architecture, a superior user experience and cost-effective innovation.

MCX W70 is Channel Sounding (CS) certified and uses phase-based ranging (PBR) for accuracy, combined with round trip time (RTT) for end-to-end security. Additionally, its on-chip Localization Compute Engine (LCE) offers support for advanced ranging algorithms with low power consumption, helping maximize an exceptional user experience. MCX W70 also offers advanced security (PSA and SESIP Level 3) and optimized power consumption.

Product Details

Block Diagram

MCX W70

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Features

Core Platform

Arm Cortex-M33 @ 96 MHz for the system, with TrustZone, a memory protection unit (MPU), digital signal processing (DSP) and a floating-point unit (FPU)
Arm Cortex-M33 @ 96 MHz for the NBU/radio subsystem, with MPU support

Memory

1.5 MB Flash
320 kB ROM
256 kB (system) + 20 kB (Localization Compute Engine Lite [LCE-Lite]) static random-access memory (SRAM)

Security

Digital tamper pins, glitch detection
True random number generator (TRNG)
Flash access protection, Secure Debug
AES-256, RSA, ECC and SHA-2
Public-key cryptography (PKC), universally unique identifier (UUID) and hardware root of trust (HW RoT)
Post-quantum cryptography (PQC), SM2, SM3 and SM4
Trusted resource domain controller (TRDC), cyclic redundancy check (CRC) and glitch detector
Intrusion and Tamper Response Controller (ITRC)

Clocks

32 kHz oscillator (OSC_32K), 32 kHz free-running oscillator (FRO_32K)
OSC 32M narrowband unit (NBU)
FRO-192M
FRO-200M
System Clock Generator (SCG)
Peripheral Clock Control (PCC/MRCC)

Communication Interfaces

One flexible controller area network (FlexCAN)
Two low-power universal asynchronous receiver-transmitters (LPUART)
Three low-power serial peripheral interfaces (LPSPI)
Two low-power inter-integrated circuits (LPI²C)

Analog

16-bit analog-to-digital converter (ADC), 8-channel, with a 4 Msps conversion rate
One low-power analog comparator (LPCMP)

Timers

Five timer/pulse-width modulation (PWM)
Two watchdog timer (WDT)
One low-power interrupt timer (LPIT)
Two timestamp timer
Two code WDOG
Two low-power timers (LPTMR)
One optimized flexible pulse-width modulation (FlexPWM)
One SFA

Human Machine Interfaces (HMI)

32 general-purpose input/output (GPIO) (48-pin package)

Power Management

Efficient DC-DC converters and low-dropout regulators (LDOs)
~4 µA Deep Sleep with 256 kB RAM retention

Radio

Bluetooth LE 6.0 (BCS)
IEEE 802.15.4-2006-compliant physical layer (PHY) and medium access control (MAC) (Thread, Zigbee, dual PAN)
IEEE 802.15.4j-2012 Medical Body Area Network (MBAN) frequency bands spanning 2360–2400 MHz
Generic 2-level frequency-shift keying (FSK)/Gaussian frequency-shift keying (GFSK)/minimum shift keying (MSK)/Gaussian minimum shift keying (GMSK)
Concurrent 802.15.4 and Bluetooth LE operation