Renesas H8/3847R Series Hardware Manual page 629

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
6 5
TCW6 TCW5
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
Appendix B Internal I/O Registers
H'B3
4 3
TCW4 TCW3 TCW2
0 0
R/W R/W R/W
Count value
H'B4
4 3
 
TMC2
1 1
 
R/W
Clock select
0 0 Internal clock:
0
0 1 Internal clock:
0
0 Internal clock:
0 1
1 Internal clock:
0 1
0 Internal clock:
1 0
1 Internal clock:
1 0
1 0 Internal clock:
1
External event (TMIC): Counting
1
1
1
on rising or falling edge
Rev. 6.00 Aug 04, 2006 page 591 of 680
Watchdog timer
2 1 0
TCW1 TCW0
0 0 0
R/W R/W
Timer C
2 1 0
TMC1 TMC0
0 0 0
R/W R/W
φ/8192
φ/2048
φ/512
φ/64
φ/16
φ/4
φw/4
* Don't care
REJ09B0145-0600