Register Descriptions; Timer Start Register (Tstr) - Hitachi H8/3032 Series Hardware Manual

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8.2 Register Descriptions

8.2.1 Timer Start Register (TSTR)

TSTR is an 8-bit readable/writable register that starts and stops the timer counter (TCNT) in
channels 0 to 4.
Bit 7
— —
Initial value 1
Read/Write — —
Reserved bits
TSTR is initialized to H'E0 by a reset and in standby mode.
Bits 7 to 5—Reserved: Read-only bits, always read as 1.
Bit 4—Counter Start 4 (STR4): Starts and stops timer counter 4 (TCNT4).
Bit 4
STR4 Description
0 TCNT4 is halted
1 TCNT4 is counting
Bit 3—Counter Start 3 (STR3): Starts and stops timer counter 3 (TCNT3).
Bit 3
STR3 Description
0 TCNT3 is halted
1 TCNT3 is counting
Bit 2—Counter Start 2 (STR2): Starts and stops timer counter 2 (TCNT2).
Bit 2
STR2 Description
0 TCNT2 is halted
1 TCNT2 is counting
6 5 4 3
— STR4 STR3
1 1 0 0
— R/W R/W
Counter start 4 to 0
These bits start and
stop TCNT4 to TCNT0
181
2 1 0
STR2 STR1 STR0
0 0 0
R/W R/W R/W
(Initial value)
(Initial value)
(Initial value)