HD64F38024HV Datasheet, PDF (594/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

Appendix B Internal I/O Registers
TCW—Timer Counter W
H'B3
Watchdog Timer
Bit
Initial value
Read/Write
7
TCW7
0
R/W
6
TCW6
0
R/W
5
TCW5
0
R/W
4
TCW4
0
R/W
3
TCW3
0
R/W
2
TCW2
0
R/W
1
TCW1
0
R/W
0
TCW0
0
R/W
Count value
TMC—Timer Mode Register C
Bit
7
6
5
4
TMC7 TMC6 TMC5
⎯
Initial value
0
0
0
1
Read/Write
R/W
R/W
R/W
⎯
H'B4
Timer C
3
2
1
0
⎯ TMC2 TMC1 TMC0
1
0
0
0
⎯
R/W R/W R/W
Clock Select
0 0 0 Internal clock: φ/8192
1 Internal clock: φ/2048
1 0 Internal clock: φ/512
1 Internal clock: φ/64
1 0 0 Internal clock: φ/16
1 Internal clock: φ/4
1 0 Internal clock: φ_W/4
1 External event (TMIC):
rising or falling edge
Counter Up/Down Control
0 0 TCC is an up-counter
0 1 TCC is a down-counter
1 * Hardware control of TCC up/down operation by UD pin input
UD pin input high: Down-counter
UD pin input low: Up-counter
Auto-Reload Function Select
0 Interval timer function selected
1 Auto-reload function selected
*: Don't care
Rev. 8.00 Mar. 09, 2010 Page 572 of 658
REJ09B0042-0800