STWD100NYWY3F

STWD100NYWY3F is a Watchdog timer circuit in a 5 pin SOT23 package. The STWD100 watchdog timer circuits are self-contained devices which prevent system failures that are caused by certain types of hardware errors (such as, non-responding peripherals and bus contention) or software errors (such as a bad code jump and a code stuck in loop). The STWD100 watchdog timer has an input, WDI, and an output, active low WDO . The input is used to clear the internal watchdog timer periodically within the specified timeout period, twd. While the system is operating correctly, it periodically toggles the watchdog input, WDI. If the system fails, the watchdog timer is not reset, a system alert is generated and the watchdog output, active low WDO , is asserted.

• Current consumption of 13µA typ
• Watchdog timeout period is 1.6s
• Chip enable input
• Operating temperature range from -40 to 125°C
• ESD performance HBM: 2000V, CDM: 1000V
• Temperature range from -40 to 125 °C