Register Descriptions; Timer Start Register (Tstr) - Renesas H8/3067 Series User Manual

Section 9 16-Bit Timer
9.2

Register Descriptions

9.2.1

Timer Start Register (TSTR)

TSTR is an 8-bit readable/writable register that starts and stops the timer counter (TCNT) in
channels 0 to 2.
Bit 7

Initial value 1

Read/Write
TSTR is initialized to H'F8 by a reset and in standby mode.
Bits 7 to 3—Reserved: These bits cannot be modified and are always read as 1.
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
Bit 1—Counter Start 1 (STR1): Starts and stops timer counter 1 (TCNT1).
Bit 1
STR1 Description
0 TCNT1 is halted
1 TCNT1 is counting
Rev. 4.00 Jan 26, 2006 page 336 of 938
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6 5 4
  
1 1 1
  
Reserved bits
3 2 1

STR2 STR1
1 0 0

R/W R/W
Counter start 2 to 0
These bits start and
stop TCNT2 to TCNT0
0
STR0
0
R/W
(Initial value)
(Initial value)