TMP47C434N-3537 4-Bit microcontroller by Toshiba. Features: OSD (on screen display for TV screens), AD converter input, DA converter output. ROM: 4-096 x 8-Bit RAM: 256 x 4-BIT *** 3537 mask code ROM specifically encoded for vintage Ferguson, Fidelity, or Bush from the 1990s *** ***Check chassis version for compatability *** Package: SDIP-44 Status: NOS (New Old Stock) in o.e sealed blisterpacks. Download Toshiba TMP47C434N-3537 .pdf datasheet: RoHS compliant: TBC