TOSHIBA 1l:55B328P/]-10/12 SILICON GATE BiCMOS .
TC55B328P - 32K x 8-Bit BiCMOS Static RAM
TC55B328P-10 - 32K x 8-Bit BiCMOS Static RAM
TC55B328P-12 - 32K x 8-Bit BiCMOS Static RAM