SPRS288H May 2008 – October 2021
The TPS3813-Q1 devices (TPS3813K33-Q1 and TPS3813I50-Q1) are a family of supervisory circuits with watchdog functionality. The TPS3813-Q1family of devices is designed to assert a reset on the RESET pin when the supply (VDD) drops below the threshold voltage (VIT) which varies depending on which device is used. When the VDD supply rises above 1.1 V, the RESET pin output state becomes valid and is active in logic low state until the VDD supply crosses the voltage threshold (VIT + VHYS). The watchdog window can be programmed using the WDT and WDR pins with several different configurations, all of which are explained in the following sections.