CHAPTER 12 PORT FUNCTIONS
User’s Manual U12688EJ4V0UM00
388
(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.
Address
FFFFF030H
7
PM87
PM8
6
PM86
5
PM85
4
PM84
3
PM83
2
PM82
1
PM81
0
PM80
After reset
FFH
Bit Position
Bit Name
Function
7 to 0
PM8n (n = 7 to 0)
Port Mode
Sets P8n pin in input/output mode.
0: Output mode (output buffer ON)
1: Input mode (output buffer OFF)
Summary of Contents for V850E/MS1 UPD703100
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