AT32F421C8
Full part number: AT32F421C8T7
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 AT32F421C8 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 | — | 445 µA | — | 调压器处于运行模式，高速内部 RC 振荡器和高速外部振荡器处于关闭状态（没有独立看门狗）; 2.4 V; idd; 停机和待机模式下的典型和最大电流消耗 | Artery datasheet, p. 38 — 表 18. 停机和待机模式下的典型和最大电流消耗 |
| 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) | — | — | -25 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 | — | — | 20 ns | tr(hse); 高速外部用户时钟特性 | Artery datasheet, p. 42 — 表 20. 高速外部用户时钟特性 |
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Frequently asked questions
What is the absolute maximum current rating for the AT32F421C8T7?
The absolute maximum current is -25 mA.
What is the absolute maximum voltage rating for the AT32F421C8T7?
The absolute maximum voltage is 4 V.
What is the ADC resolution of the AT32F421C8T7?
The ADC resolution is 12 bit.
What is the maximum clock frequency of the AT32F421C8T7?
The maximum clock frequency is 120 MHz.
What is the core size of the AT32F421C8T7?
The core size is 32 bit.
What is the maximum CPU speed of the AT32F421C8T7?
The maximum CPU speed is 120 MHz.
What is the number of I/O ports?
The AT32F421C8T7 has 39 I/O ports.
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 AT32F421C8T7 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 AT32F421C8T7?
The program memory size is 62.5 KB.
What is the quiescent current when the regulator is in run mode, HSI and HSE are off (no independent watchdog), at 2.4 V?
The quiescent current is 445 µA.
What is the RAM size of the AT32F421C8T7?
The RAM size is 15.6 KB.