HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 356

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9 16-Bit Timer Pulse Unit (TPU)
9.2.8
TSTR is an 8-bit readable/writable register that selects operation/stoppage for channels 0 to 2.
TSTR is initialized to H'00 by a reset, and in hardware standby mode.
TCNT counter operation should be stopped when setting the operating mode in TMDR or the
TCNT count clock in TCR.
Bits 7 and 3—Reserved: Should always be written with 0.
Bits 2 to 0—Counter Start 2 to 0 (CST2 to CST0): These bits select operation or stoppage for
TCNT.
Bit n
CSTn
0
1
n = 2 to 0
Note: If 0 is written to the CST bit during operation with the TIOC pin designated for output, the
Rev.3.00 Mar. 26, 2007 Page 314 of 772
REJ09B0355-0300
Bit
Initial value
R/W
counter stops but the TIOC pin output compare output level is retained. If TIOR is written to
when the CST bit is cleared to 0, the pin output level will be changed to the set initial output
value.
Timer Start Register (TSTR)
Description
TCNTn count operation is stopped
TCNTn performs count operation
:
:
:
—
—
7
0
—
—
6
0
—
—
5
0
—
—
4
0
—
—
3
0
CST2
R/W
2
0
CST1
R/W
1
0
(Initial value)
CST0
R/W
0
0