APM32A103 Series
Overview
Performance
Selection Tools
Block Diagram
Documentation
Design Resources

The APM32A103 mainstream automotive-grade MCUs, based on the Arm® Cortex®-M3 core, deliver high reliability and low power consumption. With integrated FPU and CRC units, a built-in EMMC controller, and versatile interfaces, these MCUs support various automotive applications, optimizing automotive electronics designs.At present, it can be widely used in HUD, head flow light, blind spot monitor, onboard central control, smart cabin, power liftgate, fault diagnostic instrument and fuel anti-theft alarm.

Packaging Roadmap

Performance

System

  • Arm® Cortex®-M3
  • Operates at frequency of 96MHz

Memory

  • 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

Timer

  • 16-bit universal timer: 4
  • 16-bit basic timer: 2
  • 16-bit advanced timer: 1/2
  • Watchdog timer: 2
  • SysTick: 1

Analog Peripherals

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

I/Os

  • Up to 80 I/Os
  • All I/O are mapped to external interrupt vectors

Debug Mode

  • SWD
  • JTAG

Peripheral

  • U(S)ART: 5，I²C: 2
  • SPI/I²S: 3/2
  • CAN: 2
  • SDIO: 1
  • USB Device: 1

Certification level

  • AEC-Q100 Grade 1/2

Package

  • LQFP48/64/100

Selection Tools

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Core

Frequency(MHz)

FLASH(KB)

SRAM(KB)

FPU

I/Os

Voltage(V)

GPTMR(16bit)

GPTMR(32bit)

Advanced TMR(16bit)

Basic TMR

Systick(24bit)

IWDT

WWDT

RTC

ADC 12-bit Cell

ADC 12-bit Channels

DAC 12-bit Cell

DAC 12-bit Channels

Analog Comparator

TSC (Channels)

SPI

I2S

I2C

U(S)ART

CAN

SDIO

USB Device

CEC

USB OTG_FS

USB OTG_HS

DCI

SMC

DMC

Ethernet

RNG

AES/DES/ TDES

BN/ SM3/SM4

Package

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Part No.
Core
Frequency(MHz)
FLASH(KB)
SRAM(KB)
FPU
I/Os
Voltage(V)
GPTMR(16bit)
GPTMR(32bit)
Advanced TMR(16bit)
Basic TMR
Systick(24bit)
IWDT
WWDT
RTC
ADC 12-bit Cell
ADC 12-bit Channels
DAC 12-bit Cell
DAC 12-bit Channels
Analog Comparator
TSC (Channels)
SPI
I2S
I2C
U(S)ART
CAN
SDIO
USB Device
CEC
USB OTG_FS
USB OTG_HS
DCI
SMC
DMC
Ethernet
RNG
AES/DES/ TDES
BN/ SM3/SM4
Package

Block Diagram

Documentation
Format Size
APM32A103CBT7 Datasheet Data Sheet V1.2 pdf 1.71 MB August 22, 2025
APM32A103xET7 Datasheet Data Sheet V1.1 pdf 1.93 MB August 22, 2025
APM32A103RCTx Datasheet Data Sheet V1.0 pdf 1.51 MB September 11, 2025
APM32A103 datasheet Data Sheet V1.0 pdf | html 1.93 MB February 02, 2026
APM32A103 DATASHEET Data Sheet V1.0 pdf | html 1.71 MB February 24, 2026
APM32A103CBT7 User Manual User Manual V1.2 pdf 4.82 MB August 22, 2025
APM32A103xET7 User Manual User Manual V1.1 pdf 7.32 MB November 24, 2023
APM32A103RCTx User Manual User Manual V1.0 pdf 6.68 MB September 11, 2025
AN1080_APM32_APM32 Series Tool Chain User Manual Application Note V1.1 pdf 1.21 MB October 28, 2022
AN1090_APM32_TSC Touch Module Application Note V1.0 pdf 1.51 MB April 19, 2023
AN1093_APM32_Eclipse Development Tutorial under APM32 Arm MCU Windows System Application Note V1.0 pdf 3.15 MB July 13, 2023
AN1095_APM32_USB Device Library Application Note Application Note V1.0 pdf 1.15 MB August 30, 2023
AN1152_APM32A103xE Application Note Application Note V1.0 pdf 737.33 KB June 11, 2025
GEEHY-LINK User Guide Development Tool Manual V1.3 zip 3.27 MB December 08, 2023

Design Resources

Software Development Tools
Format Size
GeehyProg SetUp Programmer/DFU/ISP V1.0.6 msi 10.58 MB January 20, 2026
APM32A10x_SDK SDK V1.0 zip 41.31 MB December 22, 2023
APM32_USB_SDK SDK V1.1 zip 9.45 MB January 05, 2024
APM32A10x_DFP Pack Pack V1.0.0 pack 1.32 MB December 22, 2023

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