Toshiba TMP43296455Y / 6455Y - Japan

Toshiba TMP43296455Y (often found as TMP43206455) is a specialized video RAM integrated circuit, typically used in older electronics such as CRT televisions. 

IC Details

• Type: Video RAM / Video Processor Interface IC.
• Package: 42-pin DIP (Dual In-line Package).
• Application: Primarily found in the video processing circuitry of CRT TVs and older display equipment.
• Family: Part of Toshiba’s "TMP" series of microcontrollers and specialized logic chips.