CMT4522 is a System on Chip (SoC) for Bluetooth 5.2 / IEEE 802.15.4 applications. It has ARM® Cortex™-M0 32-bit processer with 64K retention SRAM, 128KB-8MB flash, 96KB ROM, 256bit efuse, and an ultra-low power, high performance, multi-mode radio. Also, CMT4522 can support BLE / IEEE 802.15.4 with security, application and over-the-air download update. Serial peripheral IO and integrated application IP enables customer product to be built with minimum bill-of-material (BOM) cost. 

Key Features 

● ARM® Cortex™-M0 32-bit processor with SWD

● Memory

    128KB-8MB in-system flash memory

    64KB SRAM, all programmable retention in sleep mode

    4-way instruction cache with 8KB Cache RAM

    96KB ROM

    256bit efuse

● 22 general purpose I/O pins

    GPIO status retention in off/sleep mode

    configurable as serial interface and programmable IO MUX function mapping

    All pins can be configured for wake-up

    All pins for triggering interrupt

    3 quadrature decoder(QDEC)

    6-channel PWM

   2-channel PDM/I2C/SPI/UART

    4-channel DMA

● DMIC/AMIC with microphone bias

● 8-channel 12bit ADC with low noise voice PGA

● 6-channel 32bit timer, one watchdog timer

● Real timer counter (RTC)

● Power, clock, reset controller

● Flexible power management

    Operating Voltage range 1.8V to 3.6V

    Embedded buck DC-DC and LDOs

    Battery monitor

● Power consumption

    0.3μA @ OFF Mode(IO wake up only)

    1μA @ Sleep Mode with 32KHz RTC

    13uA @ Sleep Mode with 32KHz RTC and all SRAM retention

    Receive mode: 4mA @3.3V power supply

    Transmit mode: 4.6mA(0dBm output power) @3.3V power supply

    MCU: <60uA/MHz

● RC oscillator hardware calibrations

    Internal High/Low frequency RC osc

    32KHz RC osc for RTC with +/-500ppm accuracy

    32MHz RC osc for HCLK with 3% accuracy

● High Speed Throughput

    Support BLE 2Mbps Protocol

    Support Data Length Extension

    Throughput up to 1.6Mbps(DLE+2Mbps)

● AoA/AoD Direction Finding

● Support SIG-Mesh Multi-Feature

    Friend Node

    Low Power Node

    Proxy Node

    Relay Node

● 2.4 GHz transceiver

    Compliant to Bluetooth 5.2

    Sensitivity:

     - 99dBm@BLE 1Mbps data rate

      - 105dBm@BLE 125Kbps data rate

       - 103dBm@IEEE 802.15.4 250Kbps data rate

    TX Power -20 to +10dBm in 3dB steps

     Single-pin antenna: no RF matching or RX/TX switching required

     RSSI (1dB resolution)

     Antenna array and optional off-chip RF PA/LNA control interface

● AES-128 encryption hardware

● Link layer hardware

    Automatic packet assembly

    Automatic packet detection and validation

    Auto Re-transmit

    Auto ACK

    Hardware Address Matching

    Random number generator

● Operating temperature:

     -40˚C ~+85 ˚C (Consumer)

     -40 ˚C ~+105 ˚C (Industrial)

● RoHS Package: QFN32(4mm x 4mm)

Applications

wearables, beacons, home and building, health and medical, industrial and manufacturing, retail and payment, data transmission, PC/mobile/TV peripherals, internet of things (IoT)