HD404639R Datasheet, PDF (68/135 Pages) Renesas Technology Corp – 4-Bit Single-Chip Microcomputer

HD404639R Series
Timer read register B (upper digit) (TRBU: $00B)
Bit
Initial value
Read/Write
Bit name
3
2
1
0
Undefined Undefined Undefined Undefined
R
R
R
R
TRBU3 TRBU2 TRBU1 TRBU0
Figure 49 Timer Read Register B Upper Digit (TRBU)
• Port mode register C (PMRC: $025): Write-only register that selects R3₃/EVNB pin function as shown
in figure 50. It is reset to $0 by MCU reset.
Port mode register C (PMRC: $025)
Bit
Initial value
Read/Write
Bit name
3
2
1
0
0
0
0
0
W
W
W
W
PMRC3 PMRC2 PMRC1 PMRC0
PMRC0
0
1
R3₃/EVNB mode selection
R3₃
EVNB
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
Figure 50 Port Mode Register C (PMRC)
66