HD404654 Datasheet, PDF (41/109 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

Port mode register C (PMRC: $025)
Bit
Initial value
Read/Write
Bit name
3
2
0
0
W
W
PMRC3 PMRC2*
1
0
0
—
W
—
PMRC1 Not used
HD404654 Series
PMRC1
0
1
R4₀/EVND mode selection
R4₀
EVND
PMRC2
0
1
D₁₂/STOPC mode selection
D₁₂
STOPC
PMRC3
0
1
D₁₃/INT₀ mode selection
D₁₃
INT₀
Note: * PMRC2 is reset to 0 only by RESET input. When STOPC is input in stop
mode, PMRC2 is not reset but retains its value.
Figure 24 Port Mode Register C (PMRC )
Port mode register B (PMRB: $024)
Bit
Initial value
Read/Write
Bit name
3
2
1
0
—
—
—
0
—
—
—
W
Not used Not used Not used PMRB0
PMRB0
0
1
R0₀/INT₁ mode selection
R0₀
INT₁
Figure 25 Port Mode Register B (PMRB)
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