Detailed Description

Overview

The TPV710 is a watchdog timer circuit which prevent system failures that are caused by certain types of hardware errors

or software errors. The TPV710 watchdog timer circuit has an input, WDI, and output WDO. The input is used to clear

the internal watchdog timer periodically within the specified timerout 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, the watchdog output,

WDO, is asserted. The TPV710 has an enable input, EN, which can enable or disable the watchdog functionality. The EN

is connected to the internal pull down resistor. The device is enabled if the EN pin is left floating.The TPV710 is available in

SOT23-5 package. The operation temperature range is -40

℃ to 125℃.

Functional Block Diagram

WDI

Toggle

Detect

Watchdog

Timer

GND

WDO

WDI

VCC

EN

Figure 3. Functional Block Diagram

TPV710

Watchdog Timer Circuit with EN Control

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GA20230701A1