MA816 datasheet, which details the features of MA816, including overview, function, block diagram, special function registers, pins, system clock, 8051 CPU function description, memory structure, double data pointer register, I/O structure, interrupt, timer/counter, etc.
The MA816 is a high‑efficiency 1‑T 80C51‑compatible microcontroller featuring 14.5 KB of on‑chip Flash, 256 B of RAM, additional I/O ports, multiple timers, PWM, UART, analog comparator, watchdog, and power‑management modes. It operates from 4.5 V to 5.5 V and supports both idle and power‑down modes for low‑power applications.
This datasheet details the device’s architecture, pin assignments, special function registers, clock system, memory map, peripheral functions, electrical specifications, maximum ratings, and mechanical package information. This manual is written in Chinese.
| Flash memory | 14.5 KB |
|---|---|
| RAM | 256 B |
| External RAM (XRAM) | 256 B |
| Operating voltage | 4.5 V–5.5 V |
| Package | LQFP‑64 |
| Maximum supply current | 400 mA |
| Operating temperature range | -40 °C to +85 °C |
| Internal oscillator frequency | 12 MHz |
The MA816 contains 14.5 KB of Flash ROM, with 13.5 KB for application code and 1 KB for in‑application programming.
It has four standard 8‑bit I/O ports and four additional ports (P4‑P7), giving a total of 57 configurable I/O pins.
The device supports an idle mode where the CPU is frozen but peripherals stay active, and a power‑down mode where RAM and SFR contents are retained and can be awakened by external interrupts.
The microcontroller operates from 4.5 V to 5.5 V.