Description:

CMT4502 is a low-power consumption IoT Bluetooth wireless communication chip with 32-bit ARM?Cortex?-M0 CPU and 138K SRAM/Retention SRAM, featuring low power consumption, high performance, and wireless multi-mode to support BLE functions for security, applications, and wireless updates. Also, its serial peripheral IO and integrated application IP will give customers a low-cost advantage.

The CMT4502 supports BLE5.0 high-speed data throughput, including BLE 2Mbps protocol and length extension; it supports multiple features of the Bluetooth Sig-Mesh protocol: Friend/LowPower/ProxyRelay nodes, and is capable of providing full protocol feature support for BLE5.0.

Features:

 ARM® Cortex™-M0 32-bit Processor 

- Memory 

512KB System Flash 

128KB ROM 

➢ 138KB SRAM, all data constant in sleep mode

Holding ➢ 8-channel DMA 

8-channel DMA 

- RC oscillator hardware calibration 

32KHz RC RTC oscillator auto-calibration 

Accuracy ±500ppm 

32MHz RC HCLK oscillator auto-calibration 

3% accuracy 

- High Speed Data Throughput 

- 33/19 General Purpose I/O Pins 

All pins can be configured for serial interface and editable IO MUX function mapping.

IO MUX function mapping 

All pins can be configured for wake-up states. 

A total of 18 pins can trigger interrupts. 

3 QDEC decoders 

6-channel PWM 

2-channel PDM 

2-channel I2C 

2-channel SPI 

➢ 1 Channel UART 

JTAG 

- Support DMIC/AMIC microphone function 

- 3/8-channel 12-bit ADC with low noise PGA support 

- 4-channel 24-bit clock, 1 monitor clock 

- Real Time Counter (RTC) 

- Power supply, clock reset controller 

- Flexible power management 

➢ Supply voltage range: 1.8V-3.6V 

➢ Embedded step-down DC-DCs  

Embedded LDOs 

Power monitor: supports low battery detection 

- Energy Power Consumption 

➢ Sleep mode, power flow through IO wake-up only:

0.7uA 

Energy power consumption ➢ Sleep mode, wake-up only by IO: 0.7uA ➢ Sleep mode, wake-up by 32KHz RTC: 2uA

Power consumption ➢ Sleep mode, wake-up only via IO: 0.7uA 

RX mode, system peak current 6.7mA 

➢ TX 0dBm transmit power, system peak current is

6.7mA 

Supports BLE 2Mbps protocol. 

Supports Data Length Expansion (DLE) function. 

➢ Maximum data throughput up to 1.6Mbps (DLE+2Mbps) 

- Supports multiple features of SIG-Mesh 

Friend node 

Friend nodes ➢ LowPower nodes 

Proxy node ➢ Friend node ➢ LowPower node 

Relay nodes 

- 2.4 GHz Transceiver 

➢ Supports BLE5.0 RF PHY 1Mbps/2Mbps 

➢ Receive sensitivity: 

BLE 1Mbps Data Rate: -97dBm 

Transmit power: -20dBm to 10dBm, 3dBm steps 

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

RSSI: 1dB resolution 

- AES-128 hardware encryption 

- Operating Temperature: -40°C ~ 85°C 

- RoHS Package: QFN32/QFN48 

- Application Scenario：Smart wearable devices, Bluetooth indoor navigation, smart

Smart Home, Smart Building, Healthcare, Sports & Fitness, Intelligent Industry, Retail & Payment, Information Security, Information Technology

Industry, retail payment, information security, data transmission, remote control,

personal peripherals, and Internet of Things (IoT).