MSM82C55A-2VJS View Datasheet(PDF) - Oki Electric Industry
Part Name
Description
MFG CO.
'MSM82C55A-2VJS' PDF : 26 Pages View PDF
¡ Semiconductor
D7 D6 D5 D4 D3 D2 D1 D0
11¥¥¥11¥
MSM82C55A-2RS/GS/VJS
As all of 8 bits of port C become
control pins in this case, D3 and
D0 bits are treated as "Don't Care".
No I/O specification is required for mode 2,
since it is a bidirectional operation.
This bit is therefore treated as "Don't Care".
When group A is set to mode 2, this bit is treated
as "Don't Care".
PC3
INTRA
PA7 - PA0 8
PC7
OBFA
PC6
ACKA
PC4
STBA
PC5
IBFA
Group A: Mode 2
Group B: Mode 1 Input
RD
PB7 - PB0 8
PC2
STBB
WR
PC1
IBFB
PC0
INTRB
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