Hitachi H8S/2678 Series Reference Manual page 640

TCNT1—Timer Counter 1
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.
TGR1A—Timer General Register 1A
TGR1B—Timer General Register 1B
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'FFE6
10 9 8 7
0 0 0 0
R/W R/W R/W R/W
Up/down-counter*
H'FFE8
H'FFEA
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
TPU1
2 1 0
0 0 0
R/W R/W R/W
TPU1
TPU1
2 1 0
1 1 1
R/W R/W R/W
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