Programmable Peripheral Interface
Description
Am8255A/8255A-5
MOS-108
CONNECTION DIAGRAM - Top View
PA3 PA 2 PAl
PAO
AD
CS
GNO
Al
AO
PC7 PC6 PCS PC4
PCO PCl PC2 PC3
10 11 12 13 14 15 16 17
PBo 18
PBl §19 PB2 20
Am8255A
PA. 39 PAs 38 PA6 37 PA7 36 WR 35 RESET 34 DO 33 01
32 02 31 03 30 04 29 Os 28 0 6 27 07 26 Vee 25 PB7 24 PB6
§23 PBs
22 PB4 21 PB3
PIN NAMES
DrDo Reset CS RD WR Ao,A1 PArPA...
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