CHAPTER 12 PORT FUNCTIONS
User’s Manual U12688EJ4V0UM00
408
(b) Port X mode control register (PMCX)
This register is write-only, in 8-bit units. However, the lower 5 bits are fixed at 0 by hardware, so even if 1
is written, it is disregarded.
Address
FFFFF45AH
7
PMCX7
PMCX
6
PMCX6
5
PMCX5
4
0
3
0
2
0
1
0
0
0
After reset
Note
Note Single-chip mode 0:
00H
Single-chip mode 1:
E0H
ROM-less mode 0, 1:
E0H
Bit Position
Bit Name
Function
7
PMCX7
Port Mode Control
Sets operation mode of PX7 pin.
0: Input/output port mode
1: CLKOUT output mode
6
PMCX6
Port Mode Control
Sets operation mode of PX6 pin.
0: Input/output port mode
1: WAIT input mode
5
PMCX5
Port Mode Control
Sets operation mode of PX5 pin.
0: Input/output port mode
1: REFRQ output mode
Caution Do not change the operation mode using a bit manipulation instruction (CLR1, NOT1, SET1,
TST1).
Содержание V850E/MS1 UPD703100
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