R5F61525 RENESAS [Renesas Technology Corp], R5F61525 Datasheet - Page 407
R5F61525
Manufacturer Part Number
R5F61525
Description
32-Bit CISC Microcomputer H8SX Family H8SX/1500 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.R5F61525.pdf
(846 pages)
- Current page: 407 of 846
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11.2.2
TCSR selects the clock source to be input to TCNT, and the timer mode.
Bit
7
6
Bit
Bit Name
Initial Value
R/W
Note: * Only 0 can be written to this bit, to clear the flag.
Bit Name
OVF
WT/IT
Timer Control/Status Register (TCSR)
R/(W)*
OVF
7
0
Initial
Value
0
0
WT/IT
R/W
6
0
R/W
R/(W)* Overflow Flag
R/W
TME
R/W
5
0
Description
Indicates that TCNT has overflowed in interval timer
mode. Only 0 can be written to this bit, to clear the flag.
[Setting condition]
•
•
[Clearing condition]
•
Timer Mode Select
Selects whether the WDT is used as a watchdog timer or
interval timer.
0: Interval timer mode
1: Watchdog timer mode
When TCNT overflows, an interval timer interrupt
(WOVI) is requested.
When TCNT overflows while RSTE = 1, this LSI is
initialized initially.
When TCNT overflows in interval timer mode
(changes from H'FF to H'00)
When internal reset request generation is selected in
watchdog timer mode, OVF is cleared automatically
by the internal reset.
Cleared by reading TCSR when OVF = 1, then writing
0 to OVF
(When the CPU is used to clear this flag by writing 0
while the corresponding interrupt is enabled, be sure
to read the flag after writing 0 to it.)
—
R
4
1
—
R
3
1
Rev. 3.00 Mar. 14, 2006 Page 369 of 804
Section 11 Watchdog Timer (WDT)
CKS2
R/W
2
0
CKS1
R/W
1
0
REJ09B0104-0300
CKS0
R/W
0
0
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