STWD100NPWY3F in Reel by STMicroelectronics | Timer Circuits

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Image for illustration purposes only,
refer to technical specifications

Manufacturer Part #

STWD100NPWY3F

STWD100 Series 5.5 V 13 uA 2.3 ms SMT Watchdog Timer Circuit -SOT-23-5

STWD100NPWY3F Datasheet
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Mfr. Name:	STMicroelectronics
Standard Pkg:	Product Variant Information section Available Packaging Reel Reel Qty: 3,000+ / Web Price: $0.435 / Stock: 0 Qty: 3,000+$0.435 Stock: 0 ReelSelected Variant Qty: 6,000+ / Web Price: $0.415 / Stock: 0 Qty: 3,000+$0.415 Stock: 0 Package Qty: 3000 per Reel Package Style: SOT-23-5 (SOT-25) Mounting Method: Surface Mount
Date Code:

STMicroelectronics STWD100NPWY3F - Technical Attributes

Type:	Counter/Timer Circuit
No of Channels:	1
Supply Voltage-Max:	5.5V
Supply Current:	13µA
Number Of Timers:	1
Rated Power:	320mW
Operating Temp Range:	-40°C to +125°C
Storage Temperature Range:	-55°C to +150°C
Package Style:	SOT-23-5 (SOT-25)
Mounting Method:	Surface Mount

Features & Applications

The STWD100 watchdog timer circuits are self-contained devices which prevent system failures that are caused by certain types of hardware errors (non-responding peripherals,bus contention, etc.) or software errors (bad code jump, code stuck in loop, etc.).

The STWD100 watchdog timer has an input, WDI, and an output,The input is used to clear the internal watchdog timer periodically with in the specified timeout period, 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,

The STWD100 circuit also has an enable pin,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.

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-pull WDO output
Operating temperature range: –40 to +125 °C
Package SOT-23-5, SC-70-5 (SOT-323-5)