# AT32F421K8U7 (Component) ## Description ARM-based 32-bit Cortex-M4 MCU with Flash, timers, ADC, CMP and communication interfaces Microcontroller based on an ARM® Cortex®-M4 core, designed for embedded control applications with a maximum operating frequency of 120 MHz. It operates from a 2.4 V to 3.6 V supply, integrates 64 KB Flash, 8 KB SRAM, a 12-bit 2 MSPS ADC, 10 timers, 2× USART, 2× SPI/I²S, 2× I²C, DMA, enhanced RTC, comparator, and is housed in a 32-pin QFN (5 × 5 mm) package. #Microcontroller #ARMCortexM4 #120MHz #64KBFlash #8KBSRAM #12bitADC #DMA #USART #SPI #I2C #QFN32 #ARTERY ## Component Details - **Owner:** silicon-yard - **Created:** 7/30/2026 - **Last Updated:** 7/30/2026 - **Visibility:** Public - **Symbol Style:** parametric-v1 - **Manufacturer Name:** ARTERY - **License:** https://creativecommons.org/licenses/by/4.0/ - **Datasheet URL:** https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/cc9006bc5aa764beda9bca1f1a845ed8ff870385e45c596fd5a7bec627e2ff19.pdf - **Part Type:** Integrated Circuits - **Manufacturer Part Number:** AT32F421K8U7 - **Used in:** 1 project - **Part Type:** Integrated Circuits - **Sub-Type:** Logic - **MPN:** AT32F421K8U7 - **Mount Type:** Base - **Package / Case Code:** 12-QFN - **Pin Count:** 33 - **Logic Function:** AND ## Pins | Pin | Name | Type | |-----|------|------| | 1 | VDD_1 | | | 2 | PF0/OSC_IN | | | 3 | PF1/OSC_OUT | | | 4 | NRST | | | 5 | VDDA | | | 6 | PA0 | | | 7 | PA1 | | | 8 | PA2 | | | 9 | PA3 | | | 10 | PA4 | | | 11 | PA5 | | | 12 | PA6 | | | 13 | PA7 | | | 14 | PB0 | | | 15 | PB1 | | | 16 | PB2 | | | 17 | VDD_2 | | | 18 | PA8 | | | 19 | PA9 | | | 20 | PA10 | | | 21 | PA11 | | | 22 | PA12 | | | 23 | PA13 | | | 24 | PA14 | | | 25 | PA15 | | | 26 | PB3 | | | 27 | PB4 | | | 28 | PB5 | | | 29 | PB6 | | | 30 | PB7 | | | 31 | BOOT0 | | | 32 | PB8 | | | 33 | VSS/VSSA | | --- *Generated from [https://www.flux.ai/silicon-yard/at32f421k8u7](https://www.flux.ai/silicon-yard/at32f421k8u7)*