The 3819 is a 8-bit microcomputer based on the 740 family core technology. It has a flourescent display automatic display circuit and an 16-channel 8-bit A-D converter as additional functions.
This manual describes the Mitsubishi 3819 Group single‑chip 8‑bit microcomputer, covering its architecture, functional block diagram, pin assignments, and programming basics. It includes details on the CPU instruction set, mode registers, and special function registers.
The document also lists electrical characteristics such as power supply ranges, power dissipation, operating temperature, and timing parameters, as well as package information and expansion options for the 3819 family.
| Minimum instruction execution time | 0.48 µs (at 8.4 MHz) |
|---|---|
| ROM size | 4 K to 60 K bytes |
| RAM size | 192 to 2048 bytes |
| Programmable I/O ports | 54 pins |
| Interrupt sources | 20 sources, 16 vectors |
| Power supply voltage (high‑speed mode) | 4.0 V to 5.5 V |
| Power dissipation (high‑speed mode) | 35 mW |
| Operating temperature range | –10 °C to 85 °C |
| Package type | 100P6S-A 100‑pin plastic‑molded QFP |
The minimum instruction execution time is 0.48 µs at an 8.4 MHz oscillation frequency.
The 3819 group provides 54 programmable I/O pins arranged in eight ports.
High‑speed mode requires a supply voltage between 4.0 V and 5.5 V.
It operates from –10 °C up to 85 °C.