STWD100PYW83F Watchdog Timers by STMicroelectronics

Watchdog timer circuit

Status: Active
Series: STWD100
RoHS: Compliant
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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, WDO . The input is used to clear the internal watchdog timer periodically within the specified timeout period, t wd . 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, WDO , is asserted. The STWD100 circuit also has an enable pin, EN , which can enable or disable the watchdog functionality. The EN pin is connected to the internal pull-down resistor. The device is enabled if the EN pin is left floating.

Prices starting from US$0.45


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$0.58
19,436
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Logo for element14 element14 US$0.69
18,302
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Logo for Farnell Farnell US$0.69
18,302
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Logo for Future Electronics Future Electronics US$0.45
6,000
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Logo for Avnet America Avnet America US$0.49
-
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Features

Current consumption 13 µA typ.
Available watchdog timeout periods are 3.4 ms, 6.3 ms, 102 ms, and 1.6 s
Chip enable input
Open drain or push-pullWDO output
Operating temperature range: –40 to 125 °C
Packages: SOT23-5 and SC70-5 (SOT323-5)
ESD performance HBM: 2000 V RCDM: 1000 V
HBM: 2000 V
RCDM: 1000 V
Automotive qualified

Alternative Descriptions

Mpu Supervisor/Monitor, -40 To 125Deg C | Newark Electronics
SUPERVISOR, WATCHDOG, 5.5V, SC70-5 | element14
STWD100 Series 5.5 V 13 uA Surface Mount Watchdog Timer Circuit - SOT-23-5 | Future Electronics
Watchdog Timer 3.4/6.3/102/1600ms SC70-5 | RS
Watchdog Timer 5-Pin SC-70 T/R | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a STWD100PYW83F?

Additional datasheets, footprints and schematics for STWD100PYW83F are listed on our Part Details page. You can also find images and similar parts to STWD100PYW83F on this page.

What pricing and inventory information can I view?

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What category does STWD100PYW83F fall under?

The STWD100PYW83F is listed under Reset and Supervisor ICs > Watchdog Timers.

Can I view similar or alternative parts?

You can view similar parts to STWD100PYW83F when available in the Watchdog Timers range under the specifications section at the bottom of the details page.

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Is the STWD100PYW83F RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for STWD100PYW83F have stock available?

Authorised distributors including Newark Electronics, element14, Farnell, Future Electronics and RS have stock available or on a lead time for STWD100PYW83F.

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