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MSM82C55A-2RS

Part Number	MSM82C55A-2RS
Manufacturer	OKI electronic
Description	CMOS PROGRAMMABLE PERIPHERAL INTERFACE
Published	Aug 28, 2014
Detailed Description	E2O0020-27-X3 ¡ Semiconductor MSM82C55A-2RS/GS/VJS ¡ Semiconductor CMOS PROGRAMMABLE PERIPHERAL INTERFACE This version...
Datasheet	MSM82C55A-2RS PDF File

Overview

E2O0020-27-X3 ¡ Semiconductor MSM82C55A-2RS/GS/VJS ¡ Semiconductor CMOS PROGRAMMABLE PERIPHERAL INTERFACE This version: Jan.
1998 MSM82C55A-2RS/GS/VJS Previous version: Aug.
1996 GENERAL DESCRIPTION The MSM82C55A-2 is a programmable universal I/O interface device which operates as high speed and on low power consumption due to 3m silicon gate CMOS technology.
It is the best fit as an I/O port in a system which employs the 8-bit parallel processing MSM80C85AH CPU.
This device has 24-bit I/O pins equivalent to three 8-bit I/O ports and all inputs/outputs are TTL interface compatible.
FEATURES • High speed and low power consumption due to 3m silicon gate CMOS technology • 3 V to 6 V single power supply • Full static operation • Programmable 24-bit I/O ports • Bidirectional bus operation (Port A) • Bit set/reset function (Port C) • TTL compatible • Compatible with 8255A-5 • 40-pin Plastic DIP (DIP40-P-600-2.
54): (Product name: MSM82C55A-2RS) • 44-pin Plastic QFJ (QFJ44-P-S650-1.
27): (Product name: MSM82C55A-2VJS) • 44-pin Plastic QFP (QFP44-P-910-0.
80-2K): (Product name: MSM82C55A-2GS-2K) 1/26 ¡ Semiconductor MSM82C55A-2RS/GS/VJS CIRCUIT CONFIGURATION 8 VCC 8 GND 8 Group A Control 4 Group A Port C (High Order 4 Bits) 4 PC4 - PC7 Group A Port A (8) 8 PA0 - PA7 8 D 0 - D7 Data Bus Buffer 8 Internal Bus Line 4 8 RD WR RESET CS A0 A1 Read/ Write Control Logic Group B Control 8 Group B Port C (Low Order 4 Bits) 4 PC0 - PC3 Group B Port B (8) 8 PB0 - PB7 2/26 ¡ Semiconductor MSM82C55A-2RS/GS/VJS PIN CONFIGURATION (TOP VIEW) 40 pin Plastic DIP 1 2 3 4 RD 5 CS 6 GND 7 A1 8 A0 9 PC7 10 PC6 11 PC5 12 PC4 13 PC0 14 PC1 15 PC2 16 PC3 17 PB0 18 PB1 19 PB2 20 PA3 PA2 PA1 PA0 33 32 31 30 29 28 27 26 25 24 23 NC 12 PC3 13 PB0 14 PB1 15 PB2 16 17 PB3 18 PB4 19 PB5 20 PB6 21 NC 22 VCC 44 pin Plastic QFP 44 RD 43 PA0 42 PA1 41 PA2 40 PA3 38 PA4 37 PA5 36 PA6 35 PA7 34 WR 39 VCC 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 PA4 PA5 PA6 PA7 WR RESET D...

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