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 power supply • 2.
5mA drive capabi lity on all I/O port outputs • Low standby power -ICCSB = 10llA
General Description The UM82C55A is a high performance
CMOS version of the industry standard 8255A and is manufactured using a selfaligned silicon gate
CMOS process.
It is a general purpose programmable I/O device which may be used with many...