TC94A39FAG/FB is a 1-chip CD processor from Toshiba that includes a LCD driver, a 4-channel 6-bit AD converter, a 2-wire, 3-wire serial interface, a 1-system, 2-channel UART-compatible serial interface, a buzzer, a 20-bit general-purpose counter function, interrupt function, and an 8-bit timer counter. The CPU has 4 working clocks, including 16.9344 MHz, 75 kHz, 32.768 kHz crystal oscillator, and CR oscillator, and the interface with the CD processor is easy.
This document describes the TC94A39FAG/FB CMOS digital integrated circuit, a 4‑bit microcontroller CD processor with built‑in LCD driver, AD converters, serial interfaces, timers and counters. It outlines the chip’s features, operating voltage ranges, power consumption, and temperature limits.
Detailed sections include pin‑connection diagrams, block diagrams, pin function tables, package dimensions, and electrical specifications. The final pages contain safety notices and usage guidelines for the semiconductor device. This manual is written in Japanese.
| Operating voltage (CD active) | VDD=3.8‑8.8 V (standard 8.8 V) |
|---|---|
| Operating voltage (CD off) | VpDD=1.8‑3.6 V |
| Supply current (CD active) | 30 mA |
| Standby current (16.9344 MHz) | 1.5 mA |
| Standby current (75 kHz) | 50 nA |
| Operating temperature range | -40 °C to 85 °C |
| Package type | LQFP64‑P‑1010‑0.50 |
| Program memory | 16‑bit × 8 k steps |
| Data memory | 4‑bit × 512 words |
The chip operates with VDD between 3.8 V and 8.8 V (standard 8.8 V) when the CD processor is active.
The device provides up to 26 CMOS I/O pins plus 3 N‑channel open‑drain pins.
The standby current is 1.5 mA when the CD processor is in standby at 16.9344 MHz.
The device operates reliably from –40 °C to 85 °C.