HD6432646 Hitachi, HD6432646 Datasheet - Page 367

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

10.2.8
TSTR is an 8-bit readable/writable register that selects operation/stoppage for channels 0 to 5.
TSTR is initialized to H'00 by a reset, and in hardware standby mode. When setting the operating
mode in TMDR or setting the count clock in TCR, first stop the TCNT counter.
Bits 7 and 6—Reserved: Should always be written with 0.
Bits 5 to 0—Counter Start 5 to 0 (CST5 to CST0): These bits select operation or stoppage for
TCNT.
Bit n
CSTn
0
1
Note: If 0 is written to the CST bit during operation with the TIOC pin designated for output, the
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
CST5
R/W
5
0
CST4
R/W
4
0
CST3
R/W
3
0
CST2
R/W
2
0
CST1
R/W
1
0
(Initial value)
n = 5 to 0
CST0
R/W
0
0
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