Hitachi H8S/2678 Series Reference Manual page 528

TCNT4—Timer Counter 4
Bit 15
Initial value 0
Read/Write R/W
Note: * This timer counter can be used as an up/down-counter only in phase counting mode or
when performing overflow/underflow counting on another channel. In other cases it
functions as an up-counter.
TGR4A—Timer General Register 4A
TGR4B—Timer General Register 4B
Bit 15
Initial value 1
Read/Write R/W
14 13 12 11
0 0 0 0
R/W R/W R/W R/W
14 13 12 11
1 1 1 1
R/W R/W R/W R/W
H'FE96
10 9 8 7
0 0 0 0
R/W R/W R/W R/W
Up/down-counter*
H'FE98
H'FE9A
10 9 8 7
1 1 1 1
R/W R/W R/W R/W
6 5 4 3
0 0 0 0
R/W R/W R/W R/W
6 5 4 3
1 1 1 1
R/W R/W R/W R/W
TPU4
2 1 0
0 0 0
R/W R/W R/W
TPU4
TPU4
2 1 0
1 1 1
R/W R/W R/W
511