Product Features

• Compatible with MCS-51 1T Instruction System

  System clock frequency supports up to 48MHz

  Machine cycle maximum 1TSYS @ FSYS≤24MHz

  Machine cycle maximum 2TSYS@ FSYS＝48MHz

• Memory

  Program FLASH：32K×8Bit

  Data FLASH：1K×8Bit

  IRAM：256×8Bit

  XRAM：2K×8Bit

  Support BOOT function area,1K/2K/4K optiona

  Program FLASH supports partition protection

• 4 Oscillation Modes

  HSI-Internal high-speed oscillator: 48MHz

  HSE-External high-speed oscillator: 8MHz/16MHz

  LSE-External low-speed oscillator: 32.768KHz

  LSI-Internal low-speed oscillator: 125KHz

• GPIO

  Up to 30 GPIOs

  Support pull-up/down resistor function

  Support edge (rising edge/falling edge/both edge) interrupt

  Support wake-up function

• Interrupts

  Support all external port interrupts

  Up to 7 timer interrupts

  Other peripheral interrupts

• Timers

  WDT（watchdog timer）

  Timer0/1，Timer2，Timer3/4

  LSE Timer（Support wake up）

  WUT (wake-up timer）

  BRT（baud rate clock generation timer）

• Cyclic redundancy check unit

  CRC16（CRC16-CCITT）

• Multiplication and division operation unit (MDU)

  Support 32bit/16bit, 16bit/16bit, 16bit×16bit

• Buzzer Driver

  50% duty cycle, frequency can be set freely

• Enhanced PWM

  6 channels enhanced PWM

  6 independent cycle counters

  Support independent /complementary/ synchronous/group mode

  Support edge alignment/center alignment

  Support complementary mode dead zone delayfunction

• Communication Module

  1xSPI(communication rate up to 6Mb/s)

  1xI2C (communication rate up to 400Kb/s)

  2xUART (baud rate up to 1Mb/s)

  UART1 can be mapped to any GPIO

• Operating Voltage Range

  2.1V～5.5V

• Operating Temperature Range

  -40℃～105℃

• Low-voltage Reset Function (LVR)

  1.8V/2.0V/2.5V/3.5V

• Low-voltage Detection Function (LVD)

  2.0V ~ 4.6V, 16 levels optional

• Built-in Temperature Sensor（TS）

  High precision 12-bit ADC

  Up to 30 AD external channels

  Optional reference voltage (1.2V/2.0V/2.4V/3.0V/VDD)

  Can detect internal 1.2V reference voltage

  Support hardware trigger start conversion function

  Support a set of result digital comparison function

• Hardware LCD driver

  Optional duty cycle: 1/4, 1/5, 1/6, 1/8

  Optional three clock sources: LSI/LSE/system clock

  Traditional resistive LCD, optional BIAS: 1/2, 1/3, 1/4

  Support work in sleep mode

  Support fast charging mode

  Support energy-saving mode, the total resistance of voltagedivider can be 60K/225K/900K

  Support up to 4COM x 20SEG, 5COM x 19SEG, 6COM x 18SEG, 8COM x 16SEG

• Hardware LED driver

  Optional duty cycle: 1/4, 1/5, 1/6, 1/8

  Support two modes: common cathode/common anode

  Optional three clock sources: LSI/LSE/system clock

  Optional COM, SEG current

  Support up to 4COM x 20SEG、5COM x 19SEG, 6COM x 18SEG、8COM x 16SEG

• High Sensitivity Touch

  Two analog comparators（ACMP0/1）

  4 options for the positive terminal, internal 1.2V/VDD divider forthe negative terminal

  Comparator supports unilateral/bilateral hysteresis

  The internal 1.2V/VDD divider of the negative terminal can beconnected to the internal ADC channel l

• Two Amplifiers（OP0/1）

  Three terminals of each operational amplifier are multiplexed withGPIO port

  The positive terminal supports internal 1.2V input

  Support two modes of operational amplifier /comparator

  The output of the operational amplifier can be connected to theinput of the internal analog comparator

• Low Power Mode

  Idle mode（IDLE）

  Sleep mode (STOP)

• Support 96-bit Unique ID Number (UID)

  Each chip has an independent ID number

• Support Two-wire Serial Programming and Debugging