NEC V850E/MS1 UPD703100 User Manual page 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.
7 6
PMCX PMCX7 PMCX6
Note Single-chip mode 0:
Single-chip mode 1:
ROM-less mode 0, 1:
Bit Position Bit Name
7 PMCX7
6 PMCX6
5 PMCX5
Caution Do not change the operation mode using a bit manipulation instruction (CLR1, NOT1, SET1,
TST1).
408
CHAPTER 12 PORT FUNCTIONS
5 4 3
PMCX5 0 0
00H
E0H
E0H
Port Mode Control
Sets operation mode of PX7 pin.
0: Input/output port mode
1: CLKOUT output mode
Port Mode Control
Sets operation mode of PX6 pin.
0: Input/output port mode
1: WAIT input mode
Port Mode Control
Sets operation mode of PX5 pin.
0: Input/output port mode
1: REFRQ output mode
User's Manual U12688EJ4V0UM00
2 1 0
0 0 0
Function
Address After reset
Note
FFFFF45AH