32-bit Cortex®-M4 microcontroller platform with low power consumption, high stability and high cost performance

2021-01-07 11:31:09 fandoukeji

AT32F403 series

The AT32F403 series of high-performance microcontrollers, equipped with a 32-bit ARM® Cortex®-M4 core, can effectively improve the overall performance up to 200MHz computing speed with advanced manufacturing process. The built-in single-precision floating-point unit (FPU) and digital signal processor (DSP), with rich peripherals and flexible clock control mechanism, can meet a variety of applications. The complete memory design can support up to 1MB of flash memory (Flash) and 224KB of random access memory (SRAM). Its flash memory performs excellent performance of zero wait, surpassing the level of similar chips in the industry.

The AT32F403 series integrates high performance, low power consumption and reliability, and provides a series of chips for selection in response to diverse memory usage needs. Its rich on-chip resource allocation, high integration and high cost-effective first-class market competitiveness are particularly suitable Designed for various cost-sensitive and high computing requirements such as industrial automation, motor control, Internet of Things (IoT) and consumer electronics.

SCM Development, PCBA, SCM Development Company, SCM Scheme Development

Main features

3 sets of 2M sampling rate 12-bit A/D converter (21 channels)

2-channel 12-bit D/A converter

Power-on/power-off reset (POR/PDR)

Programmable Voltage Monitor (PVD)

PLL (200 MHz output)

External high-speed 4 ~ 16 MHz crystal oscillator

Internal high-speed 8MHz RC oscillator (-40°C ~ 85°C)

External low-speed 32.768kHz RTC crystal oscillator

Internal low-speed 40kHz RC oscillator

Up to 1MB flash memory

Up to 224KB SRAM

ARM® Cortex®-M4 has the highest frequency

High 200MHz

Single precision floating point unit

Memory execution zero wait technology

2.6V ~ 3.6V supply voltage

I/Os can withstand 5V levels

Temperature range -40 ~ +85°C




Reset and power management

Emulate high-performance peripherals


3 16-bit PWM advanced control timers with dead zone control

2 32-bit, 8 16-bit general-purpose timers

2 watchdog timers (independent and window type)

2 16-bit basic timers (driving DAC)

1 system time timer: 24-bit self-decreasing type

Peripheral interface

3 x I²C

4 x SPI / I²S (SPI up to 50MHz)

3 x USART + 2 x UART

2 x SDIO

USB 2.0 full speed interface

CAN 2.0B


12 channels, support timer, ADC, DAC, SDIO, I²S, SPI, I²C and USART


Support CF card, SRAM, PSRAM, NOR and NAND memory

Support parallel LCD interface, compatible with 8080/6800 mode


External SPI Flash memory expansion (program execution/data storage/program and data can be encrypted)


48/64/100/144-pin LQFP

48-pin QFN

AT32F403 series product list

SCM Development, PCBA, SCM Development Company, SCM Scheme Development


    1. ZW = 零等待(zero wait-state),可达SYSCLK 200 MHz
      NZW = 非零等待 (non zero wait-state)

    2. 闪存存储器支持片上SRAM扩充为224 KB,以AT32F403ZGT6为例,Flash/SRAM可以设置为以下两种配置:
      – ZW : 256 KB, NZW : 768 KB, RAM : 96 KB
      – ZW : 128 KB, NZW : 896 KB, RAM : 224 KB

    3. QFN48 & LQFP48封装仅有SDIO2,最高支持4位(D0~D3)模式

    4. SPIM = 外部SPI Flash memory扩展(程序执行/数据储存/程序与数据可加密)