TC94A58FG is a 1-chip CD processor with a built-in 4-bit microcontroller produced by Toshiba.
The TC94A58FG is a 4‑bit microcontroller CD processor that integrates a controller, LCD driver, 4‑channel 6‑bit AD converter, serial interfaces, buzzer, counters, timers and multiple clock sources. It is designed for CD player systems in automotive and radio‑cassette applications.
The document includes a detailed pin‑out diagram, block diagram, package dimensions, electrical characteristics, and usage guidelines for system designers. This manual is written in Japanese.
| Data memory (RAM) | 4‑bit × 512 words |
|---|---|
| Operating voltage (CD active) | Vpp = 3.0‑3.6 V (standard 3.8 V) |
| Power consumption (CD active) | IDp = 80 mA |
| Operating temperature range | -40 °C to 85 °C |
| Package | P‑QFP64, 14 mm × 14 mm, 0.8 mm pitch, 2.8 mm thick |
When the CD processor is active, Vpp is 3.0‑3.6 V (standard 3.8 V), and when only the CPU runs, Vpp is 1.8‑3.6 V.
The device provides up to 26 CMOS I/O pins and 3 N‑channel open‑drain pins.
Four clock sources are selectable: 16.9344 MHz, 75 kHz, 32.768 kHz crystal oscillators, or an external clock input.
It uses a P‑QFP64 package measuring 14 mm × 14 mm with a 0.8 mm pitch and 2.8 mm thickness.