HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 207
![no-image](/images/no-image-200.jpg)
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
(1036 pages)
- Current page: 207 of 1036
- Download datasheet (5Mb)
5.2.2
The watchdog timer control/status register (WTCSR) is an 8-bit readable/writable register
composed of bits to select the clock used for the count, overflow flags, and timer enable bit. The
WTCSR register holds its value in an internal reset due to WDT overflow. The WTCSR register is
initialized to H'00 only by a power-on reset caused by the RESETP pin.
When used to count the clock settling time for canceling a standby, it retains its value after counter
overflow. Use a word access to write to the WTCSR counter, writing H'A5 in the upper byte. Use
a byte access to read the WTCSR.
Note: The WTCNT differs from other registers in the prevention of erroneous writes.
Bit
7
6
5
See section 5.2.3, Notes on Register Access, for details.
Watchdog Timer Control/Status Register (WTCSR)
Bit Name
TME
WT/IT
RSTS
Initial
Value
0
0
0
R/W
R/W
R/W
R/W
Description
Timer Enable
Starts and stops timer operation. Clear this bit to 0
when using the WDT in standby mode or when
changing the clock frequency.
0: Timer disabled: Count-up stops and WTCNT value
1: Timer enabled
Timer Mode Select
Selects whether to use the WDT as a watchdog timer
or an interval timer.
0: Use as interval timer
1: Use as watchdog timer
Note: If WT/IT is modified when the WDT is running,
Reset Select
Selects the type of reset when the WTCNT overflows
in watchdog timer mode. In interval timer mode, this
setting is ignored.
0: Power-on reset
1: Manual reset
is retained
the up-count may not be performed correctly.
Rev. 4.00 Sep. 14, 2005 Page 157 of 982
Section 5 Watchdog Timer (WDT)
REJ09B0023-0400
Related parts for HD6417641
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![HD6417709S](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas Technology Corp [Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series]
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![HD6417706](/images/no-image3.png)
Part Number:
Description:
Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![H8S2110B](/images/no-image3.png)
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer Renesas H8S Family/H8S/2100 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![16C6N4](/images/no-image3.png)
Part Number:
Description:
Renesas MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![32C](/images/no-image3.png)
Part Number:
Description:
RENESAS MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![32C87](/images/no-image3.png)
Part Number:
Description:
RENESAS MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![35C](/images/no-image3.png)
Part Number:
Description:
RENESAS MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![HD6412240](/images/no-image3.png)
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![HD6412320](/images/no-image3.png)
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![HD6412332](/images/no-image3.png)
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![HD6412373R](/images/no-image3.png)
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![HD6413008F](/images/no-image3.png)
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![HD6417040AF28](/images/no-image3.png)
Part Number:
Description:
Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![HD6417320](/images/no-image3.png)
Part Number:
Description:
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
![HD6417660](/images/no-image3.png)
Part Number:
Description:
Renesas 32-Bit RISC Microcomputer
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet: