DATA SHEET MOS INTEGRATED CIRCUIT µ PD23C64040J.
UPD23C64040JL - (UPD23C64040JL / UPD23C64080JL) 64M-BIT MASK-PROGRAMMABLE ROM
UPD23C64080JL - (UPD23C64040JL / UPD23C64080JL) 64M-BIT MASK-PROGRAMMABLE ROM