Overview

CMT453x Bluetooth® Low Energy wireless SoC Family is high performance, ultra-low power dissipation chips that support BLE 5.1. Equipped with 32-bit ARM Cortex®-M0 core, it features a frequency up to 64 MHz, 48 KB SRAM integrated on the chip, and 256 KB Flash.

Integrated with an advanced BLE 5.1 RF transceiver, it is compliant with the BLE 5.1 standard and provided with multiple modes including standard 1 Mbps BLE mode, enhanced 2 Mbps BLE mode, 125 kbps BLE remote mode (S8), and 500 kbps BLE remote mode (S2). In the 1 Mbps or 2 Mbps BLE mode, it supports AOA and AOD, RSSI, master/slave role, multi-connection, packet length expansion, KEYSCAN, IRC, 10-bit 1.33 Msps ADC (configurable as 16-bit 16 Ksps), analog MIC input, PGA, basic, universal and advanced timers, RTC, WWDG, IWDG, LPUART, USART, SPI, I2C, and other peripherals.

It is applicable to many application scenarios including Bluetooth KEY, OBU, data transmission module, Bluetooth voice remote controller, and smart home.

Life Support Applications

Shenzhen Hope Microelectronics Co., Ltd’s products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Shenzhen HopeMicroelectronics Co., Ltd customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Shenzhen Hope Microelectronics Co., Ltd for any damages resulting from such improper use or sale.

Key Features

CPU Core

32-bit ARM Cortex-M0 core
Frequency up to 64 MHz

Storage

256 KB Flash
48 KB SRAM

Power Dissipation

Radio receive current: 3.8 mA@3.3 V
Radio transmit current: 4.2 mA @0 dBm/3.3 V
Sleep mode (48 KB RAM retention): 1.4μA@3 V
PD mode: 130 nA

RF Specification

RX sensitivity: -96 dBm @BLE 1 Mbps
RX sensitivity: -93 dBm @BLE 2 Mbps
Power of programmable transmitter: up to +6dBm
Single end antenna

Clock

HSE: 32 MHz high speed external crystal
LSE: 32.768 KHz low speed external crystal
HSI: high speed internal RC 64 MHz
LSI: low speed internal RC 32 KHz
Support one clock output; different clock output can be configured; clock can be output after divided by four.

Reset

Power-on/off/external pin reset
Watchdog reset

Communications Interface

2 × USART interfaces, with rate up to 4 Mbps (configurable as ISO7816, IrDA, LIN)
1 × LPUART interface, featuring low-power dissipation, supporting communication rate up to 9,600 bps and low-power wakeup in Sleep mode
2 × SPI interfaces, with rate up to 16 MHz, master/slave configurable, supporting I2S
1 × I2C interface, with rate up to 1 MHz, master/slave configurable