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 processorMemory:512/256KB SPI NOR flash memory64KB SRAM, all programmable retention in sleep mode4-way instruction cache with 8KB Cache RAM96KB ROM256bit efuse19 general purpose I/O pins:GPIO status retention in off/sleep modeconfigurable as serial interface and programmable IO MUX function mappingAll pins can be configured for wake-upAll pins for triggering interrupt3 quadrature decoder(QDEC)6-channel PWM2-channel PDM/I2C/SPI/UART4-channel DMADMIC/AMIC with microphone bias5-channel 12bit ADC with low noise voice PGA6-channel 32bit timer, one watchdog timerReal timer counter (RTC)Power, clock, reset controllerFlexible power management:Operating Voltage range 1.8V to 3.6VBattery monitorPower consumption:0.3uA @ OFF Mode (IO wake up only)1uA @ Sleep Mode with 32KHz RTC13uA @ Sleep Mode with 32KHz RTC and all SRAM retentionReceive mode: 8mA @3.3V power supplyTransmit mode: 8.6mA (0dBm output power) @3.3V power supplyMCU: <90uA/MHzRC oscillator hardware calibrations:Internal High/Low frequency RC osc32KHz RC osc for RTC with +/-500ppm accuracy32MHz RC osc for HCLK with 3% accuracyHigh Speed Throughput:Support BLE 2Mbps ProtocolSupport Data Length ExtensionThroughput up to 1.6Mbps(DLE+2Mbps)BLE 5.2 featureAoA/AoD Direction FindingSupport SIG-Mesh Multi-Feature:Friend NodeLow Power NodeProxy NodeRelay Node2.4 GHz transceiver:Compliant to Bluetooth 5.2Sensitivity:-99dBm@BLE 1Mbps data rate-105dBm@BLE 125Kbps data rateTX Power -20 to +10dBm in 3dB stepsSingle-pin antenna: no RF matching or RX/TX switching requiredRSSI (1dB resolution)Antenna array and optional off-chip RF PA/LNA control interfaceAES-128 encryption hardwareLink layer hardware:Automatic packet assemblyAutomatic packet detection and validationAuto Re-transmitAuto ACKHardware Address MatchingRandom number generatorOperating temperature: -40 ℃~85℃RoHS Package: SSOP24Applications: wearables, beacons, home and building, health and medical, industrial and manufacturing, retail and payment, data transmission, PC/mobile/TV peripherals, internet of things (IoT)