The AC781x datasheet provides specifications, pin assignments, and electrical characteristics for AutoChips’ AC781 series microcontrollers.
This document details the main features of the AC781x microcontroller family, including a 100 MHz ARM Cortex‑M3 core, up to 256 KB of on‑chip Flash, 68 GPIOs, multiple UART, CAN and SPI interfaces, and supported power‑management modes. It also lists the environmental limits, such as a -40 °C to 125 °C temperature range and a 2.7 V to 5.5 V operating voltage.
The datasheet includes device identification, parameter classifications, rated values, static and dynamic electrical specifications, peripheral requirements, package dimensions for LQFP64 and LQFP80, and a complete pin‑out table for both package options. This manual is written in Chinese.
| Operating voltage range | 2.7 V to 5.5 V |
|---|---|
| Operating temperature range | -40 °C to 125 °C |
| Core speed | up to 100 MHz |
| Internal Flash size | up to 256 KB |
| Static RAM size | up to 64 KB |
| GPIO count | 68 pins |
| UART modules | 6 |
| CAN modules | 2 |
The device operates from 2.7 V up to 5.5 V.
It is rated for -40 °C to 125 °C ambient temperature.
The microcontroller includes up to 256 KB of on‑chip Flash.