HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 435

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

Bit 7—Watchdog Timer Overflow Flag (WOVF): Indicates that TCNT has overflowed
(changed from H'FF to H'00) during watchdog timer operation. This bit is not set in interval timer
mode.
Bit 6—Reset Enable (RSTE): Specifies whether or not a reset signal is generated in the
H8S/2245 Group if TCNT overflows during watchdog timer operation.
Note:
Bit 5—Reset Select (RSTS): Selects the type of internal reset generated if TCNT overflows
during watchdog timer operation.
For details of the types of resets, see section 4, Exception Handling.
Bits 4 to 0—Reserved: Read-only bits, always read as 1.
Bit 7
WOVF
0
1
Bit 6
RSTE
0
1
Bit 5
RSTS
0
1
* The modules within the H8S/2245 Group are not reset, but TCNT and TCSR within the
WDT are reset.
Description
[Clearing condition]
Cleared by reading RSTCSR when WOVF = 1, then writing 0 to WOVF
[Setting condition]
Set when TCNT overflows (changes from H'FF to H'00) during watchdog timer
operation
Description
Reset signal is not generated if TCNT overflows*
Reset signal is generated if TCNT overflows
Description
Power-on reset
Manual reset
Rev.3.00 Mar. 26, 2007 Page 393 of 772
Section 11 Watchdog Timer
REJ09B0355-0300
(Initial value)
(Initial value)
(Initial value)