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The APM32A103 automotive-grade MCUs based on Arm Cortex-M3 core with integrated 256KB Flash, 128KB SRAM, and abundant storage to meet the demand of large-capacity cache for automotive applications. It provides "dual CAN" communication interface and complies with 2.0A and 2.0 specification, communication rates up to 1Mbit/s. It supports independent USB and CAN, which is suitable for a wide range of car terminals and helps customers to expand more automotive scenarios. Certified AEC-Q100, it has been successfully applied in automotive fields such as Car Reversing Aid System, Window Lifter, BMS, Automobile Electric Tailgate System, BMS, Car Navigation, Automobile Instrument, T-BOX and Interior Atmosphere Lamp.



  • Arm® Cortex®-M3

  • Operates at frequency of 96MHz


  • Flash: 128/512KB

  • SRAM: 20/128KB

Power Consumption

  • Operating voltage range: 2.0V~3.6V

  • Support PDR/POR

  • Supports programmable voltage detector

  • Supports sleep, stop and standby modes


  • 16-bit universal timer: 3/4

  • 16-bit basic timer: 2

  • 16-bit advanced timer: 1/2

  • Watchdog timer: 2

  • SysTick: 1

Analog Peripherals

  • 12-bit ADC:2/3,external channels:10/16

  • 12-bit DAC:2,external channels:2


  • 37/51/80 I/Os

  • All I/O are mapped to external interrupt vectors

Debug Mode

  • SWD

  • JTAG


  • U(S)ART: 3/5,I2C: 2

  • SPI/I2S: 3/2

  • CAN: 1/2

  • SDIO: 1

  • USB Device: 1

Certification level

  • AEC-Q100 Grade 1/2


  • LQFP48/64/100

Documents &Development Tools

Data Sheet
User Manual
Development Board

Geehy Development Boards (including MiniBoard and EvalBoard) are equipped with everything you need to evaluate the APM32 microcontroller. Each kit comes with a variety of pins broken out to 2.54mm headers, USB type B connection, USART connection (DB9) , push buttons, accessible boot pins, and a JTAG/SWD interface for programming. 

Contact our North American team today! 
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