HD404374 Datasheet, PDF (88/161 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip A/D Converter

HD404374/HD404384/HD404389/HD404082/HD404084 Series
• Port mode register 3 (PMR3: $00B):
Port mode register 3 (PMR3) is a write-only register used to set the function of the R2₀/TOC pin as
shown in figure 51.
Port mode register 3 (PMR3) is reset to $0 by an MCU reset.
Port mode register 3 (PMR3: $00B)
Bit
Read/Write
Initial value on reset
Bit name
3
W
0
PMR33
2
W
0
PMR32
1
W
0
PMR31
0
W
0
PMR30
PMR33
0
1
PMR30
0
1
R20/TOC pin mode selection
R20
TOC
PMR31 R21/
0
1
pin mode selection
R21
SCK
PMR32 R22/SI/SO pin mode selection
∗
R22
0
SI
1
SO
∗ : Don't care
Figure 51 Port Mode Register 3 (PMR3)
• Module standby register 1 (MSR1: $00D):
Module standby register 1 (MSR1) is a write-only register used to designate supply or stopping of the
clock to timer C as shown in figure 43.
Module standby register 1 (MSR1) is reset to $0 by an MCU reset.
Rev.5.00, Sep.11.2003, page 88 of 161