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：64K×8Bit

  Data FLASH：1K×8Bit

  General RAM: 256×8Bit

  Universal XRAM: 4K×8Bit

  Program FLASH supports partition protection andIAP

  Data 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 46 GPIOs

  Support pull-up/down resistor function

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

  Support wake-up function

• Interrupt Source

  Support all external port interrupts

  Up to 8 timer interrupts

  Other peripheral interrupts

• Timers

  WDT/WWDT timer (watchdog/ window watchdogtimer)

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

  LSE Timer (support sleep wake function)

  WUT (wake-up timer)

  BRT/ BRT1 (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

  Support mask function and fault protectionfunction

• Communication Module

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

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

  Up to 4xUART (baud rate up to 1Mb/s)

• 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

• High-precision 12-bit ADC

  Up to 23 AD external channels

  Optional reference voltage (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 36SEG, 5COM x 35SEG6COM x 34SEG, 8COM x 32SEG

• 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 28SEG, 5COM x 27SEG6COM x 26SEG, 8COM x 24SEG

• Two analog comparators（ACMP0/1）

  5 options for the positive terminal, internal - 1.2V/VDD divider for the negative terminal

  Comparator supports unilateral/bilateral hysteresis

  Optional hysteresis voltage 10/20/60mV

  Support comparison output trigger EPWM brakeGPIO port

  The internal 1.2V/VDD divider of the negativeterminal can be connected to the internal ADCchannel

  Supports output latching

• Low Power Mode

  Idle mode 1/2

  Sleep mode (STOP)

• Support Two-wire Serial Programming andDebugging

  Support 96-bit Unique ID Number (UID)

  Each chip has an independent ID number