Introduction:

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)