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(2) Input/output mode/control mode setting
Port 8 input/output mode setting is performed by means of the port 8 mode register (PM8), and control mode
(external expansion mode) setting is performed by means of the mode specification pins (MODE0 to MODE3)
and the port 8 mode control register (PMC8).
(a) Port 8 mode register (PM8)
This register can be read/written in 8- or 1-bit units.
7
6
PM8
PM87
PM86
Bit Position
Bit Name
7 to 0
PM8n (n = 7 to 0)
388
CHAPTER 12 PORT FUNCTIONS
5
4
3
PM85
PM84
PM83
Port Mode
Sets P8n pin in input/output mode.
0: Output mode (output buffer ON)
1: Input mode (output buffer OFF)
User's Manual U12688EJ4V0UM00
2
1
0
PM82
PM81
PM80
Function
Address
After reset
FFFFF030H
FFH
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