AT32A423 — automotive-grade MCU family in the Artery AT32 portfolio
The AT32A423 is an automotive-grade MCU in Artery Technology's 32-bit AT32 microcontroller portfolio. It runs at up to 150 MHz system clock, with up to None KB of on-chip Flash and 48, 32 KB of SRAM, built around a high-efficiency ARM Cortex-M core.
The family is aimed at vehicle body control, HVAC and in-cabin motor applications, where the -40°C to +105°C operating range and long-term supply stability are part of the requirement. Offered in QFN324x4 mm, QFN366x6 mm, QFN486x6 mm, LQFP487x7 mm, LQFP647x7 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） | 150 |
| Flash（KB） | 256, 128, 64 |
| SRAM (KB) | 48, 32 |
| XMC | -, 1(1), 1 |
| Timers | Advanced, 1 |
| 32-bit general-purpose | 1 |
| 16-bit general-purpose | 8 |
| Basic | 2 |
| Systick | 1 |
| WDT | 1 |
| WWDT | 1 |
| ERTC | 1 |
| Communication | I2C, 3 |
| SPI | 3 |
| I2S (Half duplex) | 3 |
| USART+UART | 4+3(4), 5+3(5), 8+0 |
| CAN | 2 |
| OTGFS | 1 |
| Infrared transmitter | 1 |
| Analog | 12-bit ADCnumbers/channels, 1 |
| 11 | 11, 17, 23, 24 |
| 12-bit DACnumbers/channels | 2 |
| GPIO | 27, 29, 39, 53, 87 |
| Operating temperatures | -40°C ~ 105°C |
| Packages | QFN324x4 mm, QFN366x6 mm, QFN486x6 mm, LQFP487x7 mm, LQFP647x7 mm, LQFP6410x10 mm, LQFP10014x14 mm |
| Ordering codes | AT32A423xxU7-4, AT32A423xxU7, AT32A423xxU7, AT32A423xxT7, AT32A423xxT7-7, AT32A423xxT7, AT32A423xxT7 |
| Flash / package variants | KB, K8, TC, TB, T8, CC, CB, C8, CC, CB, C8, RC, RB, R8, RC, RB, R8, VC, VB, V8 |
Sourcing from icboms
As an independent distributor, icboms sources the AT32A423 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 AT32A423xxU7-4 stands for the flash and package variant markers. Send us the exact part number and quantity for a firm quote, MOQ and lead time.