CHAPTER 12 PORT FUNCTIONS
User’s Manual U12688EJ4V0UM00
378
(2) Input/output mode/control mode setting
Port 3 input/output mode setting is performed by means of the port 3 mode register (PM3), and control mode
setting is performed by means of the port 3 mode control register (PMC3) and port/control select register 3
(PCS3).
(a) Port 3 mode register (PM3)
This register can be read/written in 8- or 1-bit units.
Address
FFFFF026H
7
PM37
PM3
6
PM36
5
PM35
4
PM34
3
PM33
2
PM32
1
PM31
0
PM30
After reset
FFH
Bit Position
Bit Name
Function
7 to 0
PM3n (n = 7 to 0)
Port Mode
Sets P3n 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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