Section 13 Watchdog Timer (WDT)
Rev. 2.00 Mar 09, 2006 page 555 of 906
REJ09B0292-0200
13.4.4
System Reset with
WDTOVF
WDTOVF
WDTOVF
WDTOVF
If a
WDTOVF
signal is input to the
RES
pin, the device cannot initialize correctly. Avoid logical
input of the
WDTOVF
output signal to the
RES
input pin. To reset the entire system with the
WDTOVF
signal, use the circuit shown in figure 13.9.
Reset input
Reset signal to
entire system
Chip
RES
WDTOVF
Figure 13.9 Example of Circuit for System Reset with
WDTOVF
WDTOVF
WDTOVF
WDTOVF
Signal
13.4.5
Internal Reset in Watchdog Timer Mode
If the RSTE bit is cleared to 0 in watchdog timer mode, the chip will not reset internally when a
WTCNT overflow occurs, but WTCNT and WTCSR in the WDT will reset.
When using sleep mode, do not use internal reset. Instead, use the
RES
pin for resetting. (See
section13.4.4, System Reset with
WDTOVF
.)
Internal reset can be used only when sleep mode is not used.
Содержание SH7616
Страница 10: ...Rev 2 00 Mar 09 2006 page x of xxvi ...
Страница 132: ...Section 2 CPU Rev 2 00 Mar 09 2006 page 106 of 906 REJ09B0292 0200 ...
Страница 568: ...Section 12 16 Bit Free Running Timer FRT Rev 2 00 Mar 09 2006 page 542 of 906 REJ09B0292 0200 ...
Страница 582: ...Section 13 Watchdog Timer WDT Rev 2 00 Mar 09 2006 page 556 of 906 REJ09B0292 0200 ...
Страница 662: ...Section 14 Serial Communication Interface with FIFO SCIF Rev 2 00 Mar 09 2006 page 636 of 906 REJ09B0292 0200 ...
Страница 706: ...Section 16 Serial I O SIO Rev 2 00 Mar 09 2006 page 680 of 906 REJ09B0292 0200 ...
Страница 820: ...Section 19 Pin Function Controller PFC Rev 2 00 Mar 09 2006 page 794 of 906 REJ09B0292 0200 ...
Страница 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
Страница 935: ...SH7616 Hardware Manual ...