The 38C8 group is the 8-bit microcomputer based on the 740 family core technology. The 38C8 group has a LCD drive control circuit (bias control, time sharing control), a 10-bit A-D converter, and a Serial I/O as additional functions. The various microcomputers in the 38C8 group include variations of internal memory size and packaging. For details, refer to the section on part numbering.
The 38C8 group is an 8‑bit CMOS microcomputer family based on the 740 core technology. It includes an LCD drive control circuit, a 10‑bit A‑D converter, and a serial I/O interface, with various memory size and package options.
The document provides detailed specifications, pin descriptions, part numbering, functional block diagrams, and information on memory expansion, power requirements, and interrupt handling for the 38C8 series.
| ROM size | 60 Kbytes |
|---|---|
| Power source voltage | 4.0‑5.5 V |
| Minimum instruction execution time | 0.5 µs |
| Clock frequency | 8 MHz |
| Power dissipation (high‑speed mode) | 30 mW |
| Power dissipation (low‑speed mode) | 60 µW |
| Interrupt sources | 15 |
The device operates with a power source voltage of 4.0 V to 5.5 V.
The microcomputer supports 15 interrupt sources.
The minimum execution time for an instruction is 0.5 µs at 8 MHz.