Technical manual for the FM3316/3313/3312 low‑power MCU series from Fudan Microelectronics, covering specifications, pin definitions and soldering guidelines.
The manual provides a concise overview of the FM3316, FM3313 and FM3312 low‑power MCU chips, including their 16‑bit enhanced 8xC251 core, 64 KB flash, 4 KB RAM, and integrated peripherals such as LCD, RTC, ADC, UART, I²C, SPI and 7816 interfaces. It also outlines the intended use for battery‑powered low‑power applications.
Detailed sections cover the chip’s block diagram, electrical and performance parameters, package and pin definitions, as well as recommended soldering and installation procedures. Version history and worldwide sales/service contacts are listed at the end of the document. This manual is written in Chinese.
| Operating voltage range | 1.8 V ~ 5.5 V |
|---|---|
| Operating temperature range | -40 °C ~ +85 °C |
| Typical active current | ≤150 µA/MHz |
| Flash memory size | 64 KB |
| RAM size | 4 KB |
| ADC resolution | 11‑bit |
| UART ports (max baud rate) | 4 ports, up to 115 200 bps |
The MCU operates from 1.8 V to 5.5 V.
It includes a maximum of 64 KB of flash program memory.
The device supports up to four UART interfaces, with a maximum baud rate of 115 200 bps.
Sleep mode with the LCD on consumes less than 5 µA at 3 V.