Product Features

• Compatible with mcS-51's 1T command system

  The system clock frequency supports up to 48MHz

  The fastest machine cycle supports 1TSYS @ FSYS≤24MHz

  The fastest machine cycle supports 2TSYS @FSYS＝48MHz

• Memory

  program FLASH:16K×8Bit

  Data FLASH:1K×8Bit

  General RAM:256×8Bit

  Universal XRAM: 1K×8Bit

  Support BOOT region, 1K/2K/4K optional

  The 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 26 GPIO

  Both support pull-up/down resistor function

  Both support edge (rising/falling/double-edge)interrupts

  Both support wake-up function

• Interrupt source

  All external port interrupts are supported

  7 timer interrupts

  Other peripheral interrupts

• Timers

  WDT Timer (Watchdog Timer)

  Timer0/1，Timer2，Timer3/4

  LSE_Timer (supports sleep wake-up function)

  WUT (wake-up timer)

  BRT (Serial Port Baud Rate Timer)

• Buzzer driver

  50% duty cycle, frequency can be set freely

• Enhanced PWM

  4-channel enhanced PWM

  4 mutually independent cycle counters

  Supportsindependent/complementary/synchronous/grouped modes

  Edge alignment/center alignment is supported

  Supports complementary mode dead-zone delayfunction

  Support brake function and brake recoveryfunction

• 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 selectable

• Built-in Temperature Sensor (TS)

  High-precision 12-bit ADC

  Up to 26 AD external channels

  Reference Voltage Selectable(1.2V/2.0V/2.4V/3.0V/VDD)

  detectable Internal 1.2V reference voltage

  Supports hardware-triggered start conversion features

  Supports a set of result number comparison functions

• Support software LCD driver

  Software driver 1/3 bias

  Supports up to 24COM or 24SEG

• Support software LED driver

  COM SEG drive current selectable

  Supports up to 24COM or 24SEG

• Two Analog Comparators (ACMP0/1)

  4 options are available on the positive side and internal1.2V/VDD divider on the negative side

  The comparator supports unilateral/bilateral hysteresis

  The internal 1.2V/VDD divider on the negative side canbe connected to the internal ADC channel

• Low power mode

  Idle mode（IDLE）

  Sleep mode（STOP）

• Support 96-bit Unique ID Number (UID)

  Each chip has a separate ID number

• Support Two-wire Serial Programming and Debugging

  Communication module

  1 x SPI (communication rate up to 6Mb/s)

  1 x I2C (communication rate up to 400Kb/s)

  1 x UART (baud rate up to 1Mb/s)