Product Features

• Ultra-low power consumption operating environment:

  Power supply voltage range: 1.8V to 5.5V

  Temperature range: -40℃ to 105℃

  Low power consumption mode: sleep mode, deepsleep mode

  Operating power consumption: 120uA/MHz@64MHz

  Power consumption in deep sleep mode: 0.7uA

  Deep sleep mode+32.768K+RTC：1.2uA

• Core

  ARM®32-bitCortex®-M0+ CPU

  Working frequency：32KHz～64MHz

• Memory:

  256KB Flash memory, with program and data storageshared

  2.5KB dedicated data Flash memory

  32KB SRAM memory with parity check

  Support Remap function, you can choose to boot fromBoot area, Code Flash area or RAM area

• Power and reset management:

  Built-in power-on reset (POR) circuit

  Built-in voltage detection (LVD) circuit (thresholdvoltage can be set)

• Clock management:

  Built-in high-speed vibrator, accuracy (±1%). Canprovide 1MHz～64MHz system clock and peripheralmodule operation clock

  Built-in 15KHz low-speed oscillator

  Built-in 2 PLL

  Support 1MHz～20MHz external crystal oscillator

  Support 1MHz～20MHz external crystal oscillator

• Multiplier/divider module:

  Multiplier：Support single cycle 32bit multiplicationoperation

  Divider：Support 32bit signed integer divisionoperation, only 8 CPU clock cycles to complete anoperation

• Enhanced DMA controller:

  Interrupt trigger start.

  Transmission mode is selectable (normal transmissionmode, repeated transmission mode, blocktransmission mode and chain transmission mode)

  The transmission source/destination area is optionalfor the full address space range

• USB port：

  Compatible with USB 2.0 specification

  Can be used as host controller or device controller

  Support USB 2.0 full-speed and low-speedtransmission

  Support synchronous transmission, controltransmission, batch transmission and interrupttransmission

  Compatible with USB BC1.2

  On-The-Go（OTG） feature

• security function

  Comply with relevant standards of IEC/UL 60730

• Linkage controller:

  The event signals can be linked together to realize thelinkage of peripheral functions.

  15 types of event input, 4 types of event trigger.

• Abundant analog peripheral:

  12-bit precision ADC converter, conversion rate1.42Msps, 35 external analog channels, internaloptional PGA0 output as conversion channel, withtemperature sensor, support single-channelconversion mode and multi-channel scan conversionmode Conversion range: 0 to positive referencevoltage

  Comparator (CMP), built-in two-channel comparatorwith hysteresis, optional input source, referencevoltage can be external reference voltage or internalreference voltage

  Programmable gain amplifier (PGA), built-in onechannel PGA, can set 1/2/4/8/16/32/64/128 timesgain, with external GND pin (can be used asdifferential mode), output with sample and holdCircuit to support offset voltage trimming

• Input/output port:

  Number of I/O port：44～58

  Can switch between N-channel open drain andinternal pull-up and pull-down

  Built-in button interrupt detection function

  Built-in clock output/buzzer output control circuit

• Serial two-wire debugger (SWD)

• Abundant timer:

  16-bit timer: 12 channels

  15-bit interval timer: 1

  Real-time clock (RTC): 1 (with perpetual calendar, alarm clock function, and supports a wide range ofclock correction)

  Watchdog timer（WWDT）:1

  SysTick timer

• Abundant and flexible interface：

  3-channel serial communication unit: each channelcan be freely configured as a 1-channel standardUART, 2-channel SPI or 2-channel simple I2C

  Standard SPI：2 channel（support 8bit and16bit）

  Standard I2C：2 channel

  SSIE：1 channel

  Abnormal storage space access error

  Support RAM parity check

  Support hardware CRC check

  Support important SFR protection to preventmisoperation

  128-bit unique ID number

  Flash secondary protection in debug mode (level1:only the entire flash area can be erased, not read orwrite; level2: the emulator connection is invalid, andthe flash operation is not possible)

• Encapsulation:

  Support multiple encapsulation of 48 Pin and 64 Pin