HD643303x Hitachi, HD643303x Datasheet - Page 28
HD643303x
Manufacturer Part Number
HD643303x
Description
Hitachi Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD643303X.pdf
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Table 1-3 Pin Functions (cont)
Type
I/O ports
Symbol
P9
P9
PA
PB
4
0
7
7
, P9
to PA
to PB
2
,
0
0
Pin No.
11 to 9
80 to 73
8 to 1
I/O
Input/
output
Input/
output
Input/
output
13
Name and Function
Port 9: Three input/output pins. The direction
of each pin can be selected in the port 9 data
direction register (P9DDR).
Port A: Eight input/output pins. The direction of
each pin can be selected in the port A data
direction register (PADDR).
Port B: Eight input/output pins. The direction of
each pin can be selected in the port B data
direction register (PBDDR).
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