Hitachi H8S/2646 Hardware Manual page 1054

TCNT1—Timer Counter 1
Bit 15
Initial value 0
Read/Write R/W
Note: * These counters can be used as up/down-counters only in phase counting mode or
when counting overflow/underflow on another channel. In other cases they function
as up-counters.
TGR1A—Timer General Register 1A
TGR1B—Timer General Register 1B
Bit 15
Initial value 1
Read/Write R/W
1022
14 13 12 11
0 0 0 0
R/W R/W R/W R/W R/W
14 13 12 11
1 1 1 1
R/W R/W R/W R/W R/W
H'FF26
10 9 8 7 6
0 0 0 0 0
R/W R/W R/W R/W
Up/down-counter*
H'FF28
H'FF2A
10 9 8 7 6
1 1 1 1 1
R/W R/W R/W R/W
5 4 3 2
0 0 0 0
R/W R/W R/W R/W R/W
5 4 3 2
1 1 1 1
R/W R/W R/W R/W R/W
TPU1
1 0
0 0
R/W
TPU1
TPU1
1 0
1 1
R/W