SUMO
UM82C55A
CMOS Programmable Peripheral Interface
Features
Pin compatible with NMOS 8255A 24 programmable I/O pins Fully TTL compatible Bus-hold circuitry on all I/O ports eliminates pull-up
resistors High speed, no "wait state" operation with 8M Hz
80C86 Direct bit set/reset capabi lity Enhanced control word read capabi lity Single 5V ...
