Product Features

• Compatible with MCS-51 1T instruction system

  The system clock frequency supports up to 48MHz

  The maximum machine cycle supports 1TSYS@FSYS=16MHz

  The maximum machine cycle supports 2TSYS @FSYS＝24MHz

  The maximum machine cycle supports 3TSYS @FSYS＝48MHz

• Memory

  Maximum program FLASH: 64K×8Bit

  Data FLASH:4K×8Bit

  Maximum Data BOOT FLASH: 16K×8Bit

  General RAM: 256×8Bit

  Universal XRAM: 4K×8Bit

  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

• Low voltage reset function（LVR）

  1.8V/2.0V/2.5V/3.5V

• Low-voltage detection function（LVD）

  2.0V/2.2V/2.4V/2.7V/3.0V/3.7V/4.0V/4.3V

• GPIO

  Up to 30 GPIO

  All digital functions can be assigned to any GPIO

  Both support pull-up/down resistor function

  Both support edge (rising edge/ falling edge/ bothedge) interrupt

  Support wake-up function

• Interrupt source

  Support all external port interrupts

  Up to 8 timer interrupts

  Other peripheral interrupts

• Operating voltage range

  2.1V～5.5V

• Operating temperature range

  -40℃～105℃

• Communication module

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

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

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

• Low power mode

  Idle mode（IDLE）

  Sleep mode（STOP）

• Timers

  WDT wake-up (watchdog timer)

  Up to 5 timers: Timer0/1, Timer2, Timer3/4

  LSE_Timer (Support sleep wake function)

• Buzzer driver

  50% duty cycle, frequency can be set freely

• Enhanced PWM

  6 channels enhanced PWM

  6 mutually independent cycle counters

  Support independent/complementary/synchronous/groupmode

  Support edge alignment/center alignment

  Support complementary mode dead zone delayfunction

  Support mask function and brake function

• High-precision 12-bit ADC

  All GPIOs (30I/Os) support AD channels

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

  Can detect internal 1.2V reference voltage

  Support hardware trigger start conversionfunction

  Support hardware trigger start conversion function

  Support a set of result digital comparison function

• Support 96-bit Unique ID Number (UID)

  Each chip has an independent ID number

• Support Two-wire Serial Programming and Debugging