IC TMP47C634

IC TMP47C634

Meta Description of IC TMP47C634

The IC TMP47C634 is a high-performance CMOS 4-bit microcontroller developed by Toshiba, designed especially for TV control systems, on-screen display (OSD), remote signal processing, and timing-based electronic applications. Built on the reliable TLCS-470 CMOS series, this microcontroller is widely used in CRT televisions, display control boards, consumer electronics, and vintage electronic systems.

This versatile IC features an integrated on-screen display circuit, allowing smooth display of channel numbers, timer settings, symbols, and menu graphics directly on the TV screen. It supports up to 48 character patterns, 16 columns × 2 lines display structure, and flexible positioning, making it ideal for television menu systems and signal overlays.

The TMP47C634 microcontroller includes 6K × 8-bit ROM and 384 × 4-bit RAM, ensuring efficient memory handling for embedded control tasks. It also offers 30 I/O pins, dual 12-bit timer/counters, watchdog timer, serial interface with 8-bit buffer, and multiple interrupt sources for reliable and fast signal processing. These features make it highly suitable for remote control decoding, timer-based switching, frequency control, and appliance automation circuits.

A major advantage of this IC is its built-in PWM D/A converter outputs and A/D input capability, which help in signal conversion and synchronization applications. The chip also supports horizontal sync detection, LED direct drive capability, and battery backup hold function, making it useful in memory retention and display control systems.

This Toshiba IC is commonly searched by technicians, repair engineers, and electronics hobbyists for TV motherboard repair, OSD fault replacement, remote control board restoration, and electronic spare parts replacement. Its DIP and QFP package variants make it easy to integrate into both legacy and replacement circuit designs.

Key Features of IC TMP47C634:

• Toshiba CMOS 4-bit microcontroller
• Built-in TV on-screen display (OSD) circuit
• 6K ROM + 384 × 4 RAM
• Dual 12-bit timer/counters
• PWM D/A outputs
• A/D converter input
• Remote signal preprocessing
• Watchdog timer
• LED direct drive
• Ideal for TV repair and consumer electronics

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