DIGITAL WINDOW WATCHDOG TIMER
Features
• Low Current Consumption: IDD < 100 µA • RC Oscillator • Internal Reset During Power-up and Supply Voltage Dro...
Description
Features
Low Current Consumption: IDD < 100 µA RC Oscillator Internal Reset During Power-up and Supply Voltage Drops (POR) “Short” Trigger Window for Active Mode,
“Long” Trigger Window for Sleep Mode Cyclical Wake-up of the Microcontroller in Sleep Mode Trigger Input Single Wake-up Input Reset Output Enable Output
Digital Window Watchdog Timer
Description
The digital window watchdog timer, U5021M, is a CMOS integrated circuit. In applications where safety is critical, it is especially important to monitor the microcontroller. Normal microcontroller operation is indicated by a cyclically transmitted trigger signal, which is received by a window watchdog timer within a defined time window. A missing or a wrong trigger signal causes the watchdog timer to reset the microcontroller. The IC is tailored for microcontrollers which can work in both full-power and sleep mode. With an additional voltage monitoring (power-on reset and supply voltage d...
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