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14.2.7 Ports 7 and 8
Port 7 is an 8-bit input port and port 8 is a 4-bit input port. Both ports are read-only and are accessible in 8-bit
units or bitwise.
After reset:
undefined
7
P7
P77
P7n
0/1
After reset:
undefined
7
P8
0
P8n
0/1
Ports 7 and 8 include the following alternate-function pins.
Pin Name
Port 7
P70
P71
P72
P73
P74
P75
P76
P77
Port 8
P80
P81
P82
P83
Note Software pull-up function
CHAPTER 14
Figure 14-21. Format of Ports 7 and 8 (P7 and P8)
R
Address: FFFFF00EH
6
5
P76
P75
Read pin level of bit n
R
Address: FFFFF010H
6
5
0
0
Read pin level of bit n
Alternate Function
ANI0
ANI1
ANI2
ANI3
ANI4
ANI5
ANI6
ANI7
ANI8
ANI9
ANI10
ANI11
PORT FUNCTION
4
3
P74
P73
P72
Pin Level
4
3
0
P83
P82
Pin Level
Note
PULL
I/O
−
Input
No
−
Input
No
2
1
0
P71
P70
2
1
0
P81
P80
Remark
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