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Mainstream line, Cortex®-M4F 240MHz CPU, 256~1024KB Flash, 224KB SRAM, 2CAN, 8UART, XMC, USB Microcontroller

AT32F403A Series

AT32F403A high-performance microcontrollers, powered by 32-bit ARM® Cortex®-M4 core, utilize advanced process to achieve 240 MHz computing speed. The embedded single precision floating-point unit (FPU) and digital signal processor (DSP), rich peripherals and flexible clock control mechanism can meet an extensive range of applications. The superior memory design supports up to 1 MB Flash memory and 224 KB SRAM, with the excellent Flash access zero wait far beyond the same level of the chip industry.

In addition to highly efficient computing performance, AT32F403A series also imports the Security Library to support the use of password to protect the specified program area, in which IDH programs the core algorithm and provides to downstream customers for secondary development. Meanwhile, AT32F403A series supports eight sets of UART serial interfaces and two sets of CAN buses that are well suited for IoT applications. The USB device applications without the need of external crystal oscillators can not only enhance the reliability of terminal products but reduce costs as well.

AT32F403A devices can run in the temperature range of -40 to 105°C , and offer a wide range of chips for selection in response to diverse memory requirements. Its rich on-chip resource allocation, high integration, cost-effective performance and first-class market competitiveness can satisfy the higher market demands like industrial automation, motor control, IoT and consumer electronics.

Key Features

  • Performance
    • ARM® Cortex®-M4 with 240 MHz maximum frequency
    • Floating point unit (FPU)
    • Flash memory access zero wait
    • 2.6 V to 3.6 V operating voltage
    • I/Os 5 V-tolerant
    • Operating temperature -40 to +105°C
  • Memories
    • 256 to 1024 KB of Flash instruction/data memory
    • Up to 96+128 KB of SRAM
    • sLib: configurable part of main Flash set as a library area with code executable but secured, non-readable
  • SPIM
    • Up to 16 MB of external SPI Flash memory extension (for both program execution and data storage) with encryption capability.
  • Clock
    • PLL (240 MHz output)
    • 4 to 25 MHz crystal oscillator
    • Internal 48 MHz factory-trimmed RC (-40°C to +105°C)
    • With automatic clock calibration (ACC) (accuracy 1 % at TA = 25 °C, 2.5 % at TA = -40 to +105 °C)
    • 32 kHz oscillator for RTC with calibration
    • Internal 40 kHz RC with calibration
  • Reset and supply management
    • Sleep, Deepsleep and Standby modes
    • Power-on/Low-voltage reset (POR/LVR)
    • Programmable voltage monitor (PVM)
    • Vʙᴀᴛ supply for RTC and 42 x 16-bit backup registers
  • Analog high-performance peripherals
    • 3 x 12-bit, 0.5 μs A/D converters (up to 16 channels)
    • 2 x 12-bit D/A converters
  • Timers
    • Up to 2 x 16-bit, motor control PWM advanced timers with dead-time generation
    • Up to 2 x 32-bit timers + 8x 16-bit timers
    • 2 x watchdog timers (Independent and Window)
    • 2 x 16-bit basic timers to drive the DAC
    • SysTick timer: a 24-bit downcounter
  • Peripheral interfaces
    • Up to 3 x I²C interfaces (SMBus/PMBus)
    • Up to 4 x SPIs (50 Mbit/s), all with I2S interface multiplexed, I2S2/I2S3 support full-duplex
    • 4 x USART + 4 x UART (ISO7816 interface, LIN, IrDA capability, modem control)
    • Up to 2 x SDIO interfaces
    • USB 2.0 full-speed interface supporting crystal-less
    • Up to 2 x CAN interfaces (2.0B Active)
  • DMA
    • 14 channels, support timers, ADCs, DACs, SDIOs, I²S, SPIs, I²Cs and USARTs
  • Up to 80 fast I/O
    • 37/51/80 multi-functional bi-directional I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant
    • All fast I/Os, control registers accessible with fᴀʜʙ speed
  • XMC
    • Supports Compact Flash, SRAM, PSRAM, NOR and NAND memories
    • Supports LCD parallel interface, 8080/6800 modes
  • Packages
    • 48/64/100-pin LQFP
    • 48-pin QFN

ARM Cortex®-M4F AT32F403A Product Selector

Part Number AT32F403AxxU7 AT32F403AxxT7
CC CE CG CC CE CG RC RE RG VC VE VG
CPU frequency (MHz) 240 240
Int. Flash(1) ZW(KB)(2) 256 256 256 256
NZW(KB)(2) 0 256 768 0 256 768 0 256 768 0 256 768
Total(KB) 256 512 1024 256 512 1024 256 512 1024 256 512 1024
SRAM (KB)(2) 96+128   96+128  
Timers Advanced-control 2 2 2 2
32-bit
general-purpose		 2 2 2 2
16-bit
general-purpose		 8 8 8 8
Basic 2 2 2 2
SysTick 1 1 1 1
WDT 1 1 1 1
WWDT 1 1 1 1
RTC 1 1 1 1
Communication I²C 3 3 3 3
SPI/I²S 4/4 (2 full-duplex) 4/4 (2 full-duplex) 4/4 (2 full-duplex) 4/4 (2 full-duplex)
USART+UART 3+4(3) 3+4(3) 4+4 4+4
SDIO 1 (4) 1 (4) 2 2
USB Device 1 1 1 1
CAN 2 2 2 2
Analog 12-bit ADC
numbers/channels		 3
10 10 16 16
12-bit DAC
numbers/channels		 2
2 2 2 2
GPIO 37 37 51 80
XMC - - 1(5) 1
SPIM (6) 1 ch / up to 16 MB
Operating temperatures -40°C to +105°C
Packages QFN48
6x6 mm		 LQFP48
7x7 mm		 LQFP64
10x10 mm		 LQFP100
14x14 mm
Note
  1. ZW = zero wait-state, up to SYSCLK 240 MHz
    NZW = non-zero wait-state
  2. The internal Flash and SRAM sizes are configurable with user's option bytes. Take the AT32F403AVGT7 as an example, on which the Flash/SRAM can be configured into two options below:
    - ZW: 256 KB, NZW: 768 KB, SRAM: 96 KB;
    - ZW: 128 KB, NZW: 896 KB, SRAM: 224 KB.
  3. For LQFP48 and QFN48 packages, UART8 is not available and USART6 is used as UART for no CK pin.
  4. For LQFP48 and QFN48 packages, only SDIO2 exists and supports maximum 4-bit (D0~D3) mode.
  5. For LQFP64 package, XMC only supports the LCD panel with 8-bit mode.
  6. SPIM = External SPI Flash memory extension (for both program execution and data storage) with encryption capability.

Resources

Product Select Guide

Cross Reference Table

Description Download Version Date
Cross reference table    AT32 MCU V202011 2020.11.03

Datasheet

Reference Manual

Evaluation Board

Component Library

BSP

Pack

Tool

USB Tool and Driver

Application Note

Tech Support

Artery provides customers with an extensive range of technical support, including development board, various development tools, hardware and database consulting services to help expedite product development and shorten time to market. Please contact us further for detailed information.

support_artery@arterytek.com