MMC2107 - Freescale Semiconductor

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Watchdog Timer Module Freescale Semiconductor, Inc. 13.3 Modes of Operation This subsection describes the operation of the watchdog timer in low-power modes and debug mode of operation. 13.3.1 Wait Mode nc... Freescale Semiconductor, I 13.3.2 Doze Mode 13.3.3 Stop Mode 13.3.4 Debug Mode In wait mode with the WAIT bit set in the watchdog control register (WCR), watchdog timer operation stops. In wait mode with the WAIT bit clear, the watchdog timer continues to operate normally. In doze mode with the DOZE bit set in WCR, watchdog timer module operation stops. In doze mode with the DOZE bit clear, the watchdog timer continues to operate normally. The watchdog operation stops in stop mode. When stop mode is exited, the watchdog operation continues operation from the state it was in prior to entering stop mode. In debug mode with the DBG bit set in WCR, watchdog timer module operation stops. In debug mode with the DBG bit clear, the watchdog timer continues to operate normally. When debug mode is exited, watchdog timer operation continues from the state it was in before entering debug mode, but any updates made in debug mode remain. Technical Data MMC2107 – Rev. 2.0 272 Watchdog Timer Module MOTOROLA For More Information On This Product, Go to: www.freescale.com
Freescale Semiconductor, Inc. Watchdog Timer Module Block Diagram 13.4 Block Diagram IPBUS 16-BIT WCNTR 16-BIT WSR SYSTEM CLOCK DIVIDE BY 4096 16-BIT WATCHDOG COUNTER COUNT = 0 RESET nc... Freescale Semiconductor, I 13.5 Signals EN LOAD COUNTER WAIT DOZE 16-BIT WMR DBG IPBUS Figure 13-1. Watchdog Timer Block Diagram The watchdog timer module has no off-chip signals. MMC2107 – Rev. 2.0 Technical Data MOTOROLA Watchdog Timer Module 273 For More Information On This Product, Go to: www.freescale.com
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MMC2107 - Freescale Semiconductor

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