HD6437101 RENESAS [Renesas Technology Corp], HD6437101 Datasheet - Page 184
HD6437101
Manufacturer Part Number
HD6437101
Description
32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6437101.pdf
(560 pages)
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Section 8 Multifunction Timer Pulse Unit (MTU)
8.3.7
The TGR registers are dual function 16-bit readable/writable registers, functioning as either output
compare or input capture registers. The MTU has 16 TGR registers, four each for channels 0, 3,
and 4 and two each for channels 1 and 2. TGRC and TGRD for channels 0, 3, and 4 can also be
designated for operation as buffer registers. The TGR registers cannot be accessed in 8-bit units;
they must always be accessed as a 16-bit unit. TGR buffer register combinations are TGRA—
TGRC and TGRB—TGRD. The initial value is H'FFFF.
8.3.8
TSTR is an 8-bit readable/writable register that selects operation/stoppage for channels 0 to 4.
When setting the operating mode in TMDR or setting the count clock in TCR, first stop the TCNT
counter.
Rev.1.00 Sep. 18, 2008 Page 150 of 522
REJ09B0069-0100
Bit
7
6
5 to 3 —
2
1
0
Bit Name
CST4
CST3
CST2
CST1
CST0
Timer General Register (TGR)
Timer Start Register (TSTR)
Initial
value
0
0
All 0
0
0
0
R/W
R/W
R/W
R
R/W
R/W
R/W
Description
Counter Start 4 and 3
These bits select operation or stoppage for TCNT.
If 0 is written to the CST bit during operation with the
TIOC pin designated for output, the 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.
0: TCNT_4 and TCNT_3 count operation is stopped
1: TCNT_4 and TCNT_3 performs count operation
Reserved
These bits are always read as 0. The write value should
always be 0.
Counter Start 2 to 0
These bits select operation or stoppage for TCNT.
If 0 is written to the CST bit during operation with the
TIOC pin designated for output, the 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.
0: TCNT_2 and TCNT_0 count operation is stopped
1: TCNT_2 and TCNT_0 performs count operation
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