AT32F403A — mainstream MCU family in the Artery AT32 portfolio
The AT32F403A is a mainstream MCU in Artery Technology's 32-bit AT32 microcontroller portfolio. It runs at up to 240 MHz system clock, with up to 1024 KB of on-chip Flash and 96+128 KB of SRAM, built around a high-efficiency ARM Cortex-M core.
The family is aimed at general-purpose control, instrumentation and consumer designs needing a balanced mix of Flash, SRAM, I/O and interfaces. Offered in QFN486x6 mm, LQFP487x7 mm, LQFP6410x10 mm, LQFP10014x14 mm packaging, one design can scale across pin-count variants while keeping the core software identical.
Key specifications (manufacturer data)
| Parameter | Value |
|---|---|
| CPU frequency (MHz) | 240 |
| Int. Flash | ZW(KB)(2), 256 |
| NZW(KB) | 0, 256, 768 |
| Total(KB) | 256, 512, 1024 |
| SRAM (KB) | 96+128 |
| Timers | Advanced-control, 2 |
| 32-bitgeneral-purpose | 2 |
| 16-bitgeneral-purpose | 8 |
| Basic | 2 |
| SysTick | 1 |
| WDT | 1 |
| WWDT | 1 |
| RTC | 1 |
| Communication | I²C, 3 |
| SPI/I²S | 4/4 (2 full-duplex) |
| USART+UART | 3+4(3), 4+4 |
| SDIO | 1 (4), 2 |
| USB Device | 1 |
| CAN | 2 |
| Analog | 12-bit ADCnumbers/channels, 3 |
| 10 | 10, 16 |
| 12-bit DACnumbers/channels | 2, 2ch |
| GPIO | 37, 51, 80 |
| XMC | -, 1(5), 1 |
| SPIM | 1 ch / up to 16 MB |
| Operating temperatures | -40°C to +105°C |
| Packages | QFN486x6 mm, LQFP487x7 mm, LQFP6410x10 mm, LQFP10014x14 mm |
| Ordering codes | AT32F403AxxU7, AT32F403AxxT7 |
| Flash / package variants | CE, CG, CC, CE, CG, RC, RE, RG, VC, VE, VG |
Sourcing from icboms
As an independent distributor, icboms sources the AT32F403A family at competitive B2B pricing with short lead times from Shenzhen. The codes above follow Artery's ordering scheme — the 'xx' in codes such as AT32F403AxxU7 stands for the flash and package variant markers. Send us the exact part number and quantity for a firm quote, MOQ and lead time.