CMT4552 is a System on Chip (SoC) for Bluetooth 5.2 applications. It has high-performance low-power 32-bit processer with 64K retention SRAM, 512/256KB flash, 96KB ROM, 256bit efuse, and an ultra-low power, high performance, multi-mode radio. Also, CMT4552 can support BLE 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

● High-performance low-power 32-bit processor

● Memory

    512/256KB SPI NOR flash memory

    64KB SRAM, all programmable retention in sleep mode

    4-way instruction cache with 8KB Cache RAM

    96KB ROM

    256bit efuse

● 19 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

● 5-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

    Battery monitor

● Power consumption

    0.3uA @ OFF Mode (IO wake up only)

    1uA @ Sleep Mode with 32KHz RTC

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

    Receive mode: 8mA @3.3V power supply

    Transmit mode: 8.6mA (0dBm output power) @3.3V power supply

    MCU: <90uA/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)

● BLE 5.2 feature

● 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

    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 ℃~85℃

● RoHS Package: SSOP24

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)