As an agent of Nuvoton, the editor will introduce the application fields of M031BT. Nuvoton NuMicro M031BT series takes Arm Cortex-M0 as the core, provides BLE 5.0 and 2.4 GHz dual-mode function, provides up to +8 dBm RF transmit power, -92 dBm good receiving sensitivity, 1 Mb/s or 2 for RF applications Mb/s transmission speed, and can provide outstanding anti-noise performance in a 2.4GHz interference environment, improve communication distance and reliability, and meet the needs of application scenarios such as smart homes, consumer electronics, and industrial Internet of Things.

The NuMicro M031BT series has a working frequency of up to 48 MHz and built-in up to 128 KB Flash and 16 KB SRAM. It has a wealth of peripheral I/O such as a highly flexible Universal Serial Control Interface (USCI) that can be configured as UART, I2C or SPI, and 3 groups. 6 MHz UART and can support single-wire transmission, etc. In addition, operating at 1.8V to 3.6V working voltage, built-in 32-bit hardware multiplier/divider, up to 5-channel PDMA, 16-channel 12-bit 2 MSPS high sampling rate ADC can run at 1.8V low voltage, providing accurate and Fast performance, 12-channel 96 MHz PWM can quickly respond and accurately control external devices.

In order to protect the intellectual property rights of developers, the NuMicro M031BT series embeds an additional security protection Flash block (SPROM, Security Protection ROM), which provides an independent and secure encryption execution area to protect critical program codes. Flash lock bits are designed to provide firmware to prevent external access or write protection. Each M031BT has a 96-bit unique chip serial number (Unique Identification, UID) and a 128-bit unique customer identification (UCID), which greatly improves product confidentiality and code security.

Compared with traditional BLE SoCs that provide simple peripheral integration solutions, NuMicro M031BT series has built-in rich peripherals and excellent analog control functions, which not only greatly reduces the PCB size, but the QFN48 package area is only 5mm x 5mm, which also reduces the difficulty of RF layout. Nuvoton transparently transmits the sample code to make the application development of Bluetooth low energy very easy.

Take an electric toothbrush as an example. Through Nuvoton's NuMicro M031BT equipped with Arm Cortex-M0, you can use Bluetooth transparent transmission to transmit data to the APP to achieve differentiated services. It has 12 channels of 96 MHz PWM, which can be used for motor control. Drive and adjust the vibration frequency of the electric toothbrush. It can also be used as a light to adjust the electric toothbrush to display different usage modes or effects of the electric toothbrush. Then connect the sensing module through multiple sets of I/O, and the high sampling rate ADC also It can provide accurate voltage measurement to confirm the power of the electric toothbrush, etc., all of which can be achieved through a NuMicro M031BT micro-control processor with built-in rich peripherals and excellent analog control functions and integrated Bluetooth technology.