HD404459 Datasheet, PDF (79/122 Pages) Renesas Technology Corp – 4-bit HMCS400-series microcomputers

HD404459 Series
• Timer mode register D2 (TMD2: $015): Four-bit read/write register that selects the timer D output
mode and input capture operation (figure 61). It is reset to $0 by MCU reset.
Timer mode register D2 (TMD2: $015)
Bit
3
2
1
0
Initial value
0
0
0
0
Read/Write
R/W
R/W
R/W
R/W
Bit name
TMD23 TMD22 TMD21 TMD20
TMD23 TMD22 TMD21 TMD20
0
0
0
0
R3₂/TOD mode selection
R3₂
R3₂ port
1
TOD Toggle output
1
0
TOD 0 output
1
TOD 1 output
1
0
0
TOD Not used
1
1
0
1
TOD PWM output
1 Don't care Don't care Don't care R3₂
Input capture (R3₂ port)
Figure 61 Timer Mode Register D2(TMD2)
• Timer write register D (TWDL: $011, TWDU: $012): Write-only register consisting of a lower digit
(TWDL) and an upper digit (TWDU) (figures 62 and 63). The operation of timer write register D is
basically the same as that of timer write register B (TWBL: $00A, TWBU: $00B).
Timer write register D (lower digit) (TWDL: $011)
Bit
Initial value
Read/Write
Bit name
3
0
W
TWDL3
2
0
W
TWDL2
1
0
W
TWDL1
0
0
W
TWDL0
Figure 62 Timer Write Register D Lower Digit (TWDL)
77