Renesas H8 Series Hardware Manual page 618

Appendix B Internal I/O Registers
TCW—Timer Counter W
Bit 7
TCW7
Initial value 0
Read/Write R/W
TMC—Timer Mode Register C
Bit 7
TMC7
Initial value 0
Read/Write R/W
Auto-Reload Function Select
0 Interval timer function selected
1 Auto-reload function selected
Rev. 7.00 Mar 10, 2005 page 576 of 652
REJ09B0042-0700
6 5
TCW6 TCW5 TCW4
0 0
R/W R/W
6 5
TMC6 TMC5
0 0
R/W R/W
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
H'B3
4 3
TCW3 TCW2
0 0
R/W R/W R/W
Count value
H'B4
4 3 2
 
TMC2
1 1 0
 
R/W
Clock Select
0 0 0
1 0
1 0 0
1 0
Watchdog Timer
2 1 0
TCW1 TCW0
0 0 0
R/W R/W
Timer C
1 0
TMC1 TMC0
0 0
R/W R/W
Internal clock: φ/8192
Internal clock: φ/2048
1
Internal clock: φ/512
Internal clock: φ/64
1
Internal clock: φ/16
Internal clock: φ/4
1
Internal clock: φ
/4
W
1 External event (TMIC):
rising or falling edge
*: Don't care