AT32F437VGT7

Introduction

The AT32F437VGT7 is a high-performance, high-integration 32-bit microcontroller (MCU) launched by ArteryTek, based on the ARM® Cortex®-M4F core. It is designed for industrial and IoT applications requiring powerful computing capabilities, rich connectivity, and high reliability. Renowned for its industry-leading maximum frequency of 288 MHz, large memory (1MB Flash + 384KB SRAM), and integrated high-speed interfaces such as Gigabit Ethernet MAC and USB HS, it is a powerful domestic alternative to the STM32F437 series.

Key Features

Core & Performance

• 32-bit ARM® Cortex®-M4F Core: Integrated with a single-precision Floating Point Unit (FPU) and Digital Signal Processing (DSP) instruction set.
• Ultra-High Frequency: Up to 288 MHz (some sources list 240 MHz, actual performance reaches 300 DMIPS). Zero-wait Flash accelerator technology ensures efficient instruction execution.
• Zero Wait (ZW) Technology: Further improves code execution efficiency.

Memory Configuration

• Flash: 1 MB with a Dual-Bank architecture, supporting simultaneous read/write operations and interrupt-free firmware upgrades (Live Update/OTA).
• SRAM: 384 KB (including 64KB tightly-coupled DTCM + 320KB system SRAM), providing ample cache for high-speed data processing.
• Secure Storage: Built-in AES/TRNG/SHA hardware encryption engine, supporting Chinese national cryptography algorithms SM4/SM3. Features the proprietary sLib™ security library, allowing specific Flash areas to be set as "call-only, non-readable" secure zones.

Connectivity & Peripherals

• Network Communication:
  • Gigabit Ethernet MAC: Requires an external PHY chip (e.g., LAN8720A). Supports IEEE 1588 PTP protocol and hardware Checksum Offload to reduce CPU load.
  • USB 2.0 HS/FS: Supports 480 Mbps High-Speed and 12 Mbps Full-Speed communication, with an integrated OTG controller.
• Industrial Buses: 2x CAN 2.0B controllers, suitable for industrial fieldbuses and automotive electronics.
• Multimedia & Storage:
  • SDIO: Supports SD cards/SDIO devices.
  • I2S/Audio: Supports sampling rates from 8KHz to 192KHz, suitable for network audio modules.
  • QSPI: 2x QSPI interfaces for expanding external Flash or RAM.
  • DVP: 8~14-bit parallel camera interface.
• Analog Peripherals:
  • ADC: 3x 12-bit high-speed ADCs, sampling rate up to 5.33 MSPS, with 16 channels total.
  • DAC: 2x 12-bit DAC channels.
• Timers: A total of 13 timers, including 1x 24-bit SysTick, 2x Watchdogs, multiple general-purpose timers, and 1x advanced control timer (supports 6-channel complementary PWM output with dead-time generation, designed specifically for motor control).
• Others: 8x UARTs, 4x SPIs, 3x I2Cs, 1x Infrared Transmitter (IRTMR).

Package & Environment

• Package: LQFP-100 (14×14 mm), providing 84 GPIO pins.
• Operating Voltage: 2.6V ~ 3.6V.
• Operating Temperature: -40°C to +105°C (Extended Industrial Grade).
• GPIO Features: Almost all pins are 5V tolerant and support pin remapping.

Typical Specification Table

Selection Comparison & Applications

Comparison with STM32F437VGT7

• Performance Advantage: The AT32F437VGT7's main frequency (240/288 MHz) is significantly higher than the STM32F437VGT7 (180 MHz), offering stronger computing power.
• Peripheral Upgrade: AT32F437 integrates Gigabit Ethernet MAC and USB HS, whereas STM32F437 only supports 100M Ethernet and USB FS.
• Cost-Effectiveness: With equal or higher specifications, AT32F437 typically offers better cost-performance and supply chain security.

Series Selection Guide

• AT32F437VGT7: 1MB Flash, general high-performance control, high cost-effectiveness.
• AT32F437VMT7: 1.5MB Flash, suitable for scenarios requiring large-capacity OTA upgrades or data logging.
• AT32F437ZMT7: LQFP144 package, providing more GPIO pins.

Typical Application Scenarios

• Industrial IoT Gateway: Utilizes Gigabit Ethernet and multiple CAN/USB interfaces to connect PLCs and sensors, running Modbus/CANopen protocol stacks.
• High-End Motor Control: 288MHz frequency + FPU + Advanced Timers support FOC/PMSM algorithms, suitable for servo drives, drones, and robotics.
• Smart Energy & BMS: Dual CAN buses manage battery packs; high-precision ADC collects voltage and current.
• Medical Devices: High-speed USB transmits imaging data; hardware encryption protects patient privacy.
• Network Audio/Broadcasting: Integrates I2S and Ethernet for SIP network audio modules and emergency broadcast hosts.
• Production Test Equipment: High computing power is used for complex algorithm calculations and screen display control.

Development & Design Notes

1. Hardware Design:
   • Ethernet Routing: Gigabit Ethernet requires high-quality PCB routing. It is recommended to use a 4-layer or more PCB, control differential line impedance at 100Ω±10%, and place it close to the PHY chip.
   • Power Management: The chip supports multiple low-power modes (Sleep, Deep Sleep, Standby). The VBAT pin can power the RTC and backup registers.
   • Boot Configuration: Boot mode is selected via the BOOT0 pin and internal system memory. Supports ISP/IAP in-circuit programming.
2. Software Development:
   • Development Environment: Supports Keil MDK, IAR EWARM, and Artery AT32 Workbench.
   • Debug Tools: The AT-Link Pro is recommended, supporting high-speed SWD/JTAG debugging and security key initialization.
   • Software Libraries: Provides complete HAL libraries, Standard Peripheral Libraries (SPL), and rich middleware (LwIP, FreeRTOS, USB Host/Device, FOC motor control library).
3. Mass Production & Programming:
   • Can be programmed using the Artery ICP programmer for encrypted Hex burning.
   • Supports sLib™ secure zone burning to protect core IP.