Product Features

• CPU Core

  32-bit CPU,Built-in ICACH, can be connected to Flash for expansion of code

  The main frequency is up to 120MHz

• Memory

  Built-in 20Kbytes of SRAM

• Clock Source

  RC Clock frequency about 16MHz

  LRC clock frequency about200KHz,Accuracy ±1% at -40℃ to+85℃

• Digital I/O

  Up to 28 programmable digital I/O pins

  General the IO supports pull-up(10k),pull-down(60k), strong,weak output,input and high impedance

  Up to 12 external interrupt/wake-up source(low power available,can be multiplexed to any I/O, with hardware filter)

  Input channel and Output channel, provide arbitrary IO input and output options for some modules

• Digital peripherals

  Two UART Controllers(UART0/1) supports DMA and Flow Control

  Two SPI Controllers with DMA(SPI0/1)support master mode and slave mode SPI0 support 4bit,SPI1support 2bit

  Built-in Spi Flash to run code

  One SD host controller

  Three 32-bit Asynchronous Divider Timers

  One IIC Controller

  Four channel PWM output

  Infrared remote control decoder

  Watchdog

• Analog Peripherals

  0.5 watt Class-D audio amplifier output

  14 channel 10-bit high precision ADC

  Low voltage protection

  Power on reset

• Operating Conditions

  Working voltage

  VBAT: 2.0v - 5.5v

  VDDIO: 2.0v - 3.4v

  Soft-off current is 2uA

  Operating Temperature: -40°C to +85°C

• Packages

  QFN32(4mm*4mm)

• Application

  Sound Toy

  Audio player

  Universal Microcontroller