Wing Shing Computer Components 82C55
the 82C55A onto the Data Bus for CPU communications.| Part No. | 82C55 |
|---|---|
| Datasheet | 82C55 Download |
| Manufacturer |  Wing Shing Computer Components |
| Description | CMOS Programmable peripheral Interface |
| Buy | Stock & Price |
FEATURES
● Pin Compatible with NMOS 8255A● 24 Programmable I/O Pins
● Fully TTL Compatible
● High Speed, No “Wait State” Operation with 5MHz 80C86 and 8MHz 80C88
● Direct Bit Set/Reset Capability
● Enhanced Control Word Read Capability
● L7 Process
● 2.5mA Drive Capability on All I/O Ports
● Low Standby Power (ICCSB) . . . . . . . . . . . . . . . . .10µA WS82C55A
DESCRIPTION
The WS82C55A is a high performance CMOS version of the industry standard 8255A and is manufactured using a self-aligned silicon gate CMOS process (Scaled SAJI IV). It is a general purpose programmable I/O device which may be used with many different microprocessors. There are 24 I/O pins which may be individually programmed in 2 groups of 12 and used in 3 major modes of operation. The high performance and industry standard configuration of the WS82C55A make it compatible with the 80C86, and other microprocessors. Static CMOS circuit design insures low operating power. TTL compatibility over the full military temperature range and bus hold circuitry eliminate the need for pull-up resistors.
