AT32F421
Full part number: AT32F421G8U7
Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.
What the AT32F421 does
The AT32F421x is a 32-bit ARM Cortex-M4 microcontroller family featuring 16 to 64 KB of flash memory, 8 to 16 KB of SRAM, and a 12-bit ADC. It operates at up to 120 MHz with a 2.4 to 3.6 V supply voltage and includes 10 timers, 7 communication interfaces, and a 5-channel DMA controller. Available in LQFP, QFN, and TSSOP packages across commercial, industrial, and military temperature ranges, this MCU is designed for embedded control applications requiring high performance and low power consumption. The part supports multiple low-power modes and features a flexible clock management system with internal oscillators and a PLL.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 20 µA | 30 µA | idd(pvd); 可编程电压检测器特性 | Artery datasheet, p. 34 — 表 12. 可编程电压检测器特性 |
| supply voltage range | 2.4 V | — | 3.6 V | Artery datasheet, p. 32 — 表 9. 通用工作条件 | |
| abs max voltage (abs max) | -300 mV | — | 4 V | Artery datasheet, p. 31 — 表 6. 电压特性 | |
| abs max current (abs max) | — | — | 150 mA | Artery datasheet, p. 31 — 表 7. 电流特性 | |
| operating temperature | -40 °C | — | 105 °C | ta; 通用工作条件 | Artery datasheet, p. 32 — 表 9. 通用工作条件 |
| clock frequency | — | 120 MHz | — | Artery datasheet, p. 11 — 表 2. AT32F421 系列器件功能和配置 | |
| power dissipation | — | — | 230 mW | LQFP48 (7 x 7 mm); pd; 通用工作条件 | Artery datasheet, p. 32 — 表 9. 通用工作条件 |
| cpu speed | — | 120 MHz | — | Artery datasheet, p. 1 | |
| program memory size | — | 62.5 KB | — | Artery datasheet, p. 1 — 表 1. 选型列表 | |
| ram size | — | 15.6 KB | — | Artery datasheet, p. 11 — 表 2. AT32F421 系列器件功能和配置 | |
| io count | — | 39 | — | Artery datasheet, p. 1 | |
| adc resolution | — | 12 bit | — | Artery datasheet, p. 60 — 6.3.17 12 位 ADC 特性 | |
| core size | — | 32 bit | — | Artery datasheet, p. 1 | |
| rise time | — | — | 50 ns | tr(lse); 低速外部用户时钟特性 | Artery datasheet, p. 43 — 表 21. 低速外部用户时钟特性 |
Closest matches to AT32F421
Frequently asked questions
What is the absolute maximum current for the AT32F421G8U7?
The absolute maximum current is 150 mA.
What is the absolute maximum voltage rating for the AT32F421G8U7?
The absolute maximum voltage is 4 V.
What is the ADC resolution of the AT32F421G8U7?
The ADC resolution is 12 bit.
What is the maximum clock frequency of the AT32F421G8U7?
The maximum clock frequency is 120 MHz.
What is the core size of the AT32F421G8U7?
The core size is 32 bit.
What is the maximum CPU speed of the AT32F421G8U7?
The maximum CPU speed is 120 MHz.
What is the io count for the AT32F421G8U7?
The io count is 39.
What is the operating temperature (ta) under general operating conditions?
The operating temperature (ta) under general operating conditions is 105 °C.
What is the power dissipation for the AT32F421G8U7 in an LQFP48 (7 x 7 mm) package under general operating conditions?
The power dissipation is 230 mW.
What is the program memory size of the AT32F421G8U7?
The program memory size is 62.5 KB.
What is the quiescent current for the programmable voltage detector (IDD(PVD))?
The quiescent current is 20 µA.
What is the RAM size of the AT32F421G8U7?
The RAM size is 15.6 KB.