Features：

• Core: ARM^® Cortex^®-M0+ 

  - Frequency up to 48 MHz 

• Operating temperature: -40℃ to 85℃ ; Operating voltage: 1.62V to 5.5V 

• Memories 

  - Maximum 64 Kbytes FLASH, data retention 25 years @-40℃~+85℃ 

  - Up to 4 Kbytes RAM, support parity 

  - 22 bytes OTP memory 

• CRC calculation unit 

• Reset and power management 

  - Low power modes（Sleep，DeepSleep） 

  - Power-on/Power down reset（POR/BOR） 

  - Programmable low voltage detector（LVD） 

• Clock management 

  - 4 to 32 MHz crystal oscillator 

  - 32kHz low speed crystal oscillator 

  - Internal 48 MHz RC oscillator 

  - Internal 32 kHz RC oscillator 

  - Clock monitoring system 

  - Allow independent shutdown of each peripheral clock 

• Up to 16+1 I/O ports 

  - All I/Os support interrupt function 

  - All I/Os support interrupt input filtering 

• Analog to digital converter 

  - 12-bit accuracy, ±1 LSB 

  - Up to 2M SPS conversion speed 

  - Internel voltage reference

  - Analog watchdog function 

  - Internal temperature sensor 

• Dual voltage comparator

• Real Time Clock and Calendar 

  - Support wakeup from Sleep/DeepSleep mode 

• Timers 

  - 16-bit advanced control timer supporting 6 pairs of complementary PWM outputs with dead band, supporting input capture  

  - 16-bit general-purpose timers 

  - Three groups of 16-bit basic timers 

  - 16-bit low power timers 

  - Independent watchdog timer 

• Communication interfaces 

  - Two low-power UARTs with fractional baud rate, one of them supports LIN communication interface 

  - One SPI interface (24Mbit/s) 

  - One I2C interface (1Mbit/s) 

  - IR modulator 

• Serial wire debug (SWD) 

• 80-bit unique ID