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U5020M

Description
Digital Window Watchdog Timer
File Size146KB,10 Pages
ManufacturerAtmel (Microchip)
Download Datasheet Compare View All

U5020M Overview

Digital Window Watchdog Timer

Features
Low Current Consumption: I
DD
< 100 µA
RC Oscillator
Internal Reset During Power-up and Supply Voltage Drops (POR)
“Short” Trigger Window for Active Mode
“Long” Trigger Window for Sleep Mode
Cyclical Wake-up of the Microcontroller in Sleep Mode
Trigger Input
Six Wake-up Inputs
Reset Output
Enable Output
Digital Window
Watchdog Timer
U5020M
Description
The digital window watchdog timer, U5020M, is a CMOS integrated circuit. In applica-
tions where safety is critical, it is especially important to monitor the microcontroller.
Normal microcontroller operation is indicated by a cyclically transmitted trigger signal,
which is received by a window watchdog timer within a defined time window.
A missing or a wrong trigger signal causes the watchdog timer to reset the microcon-
troller. The IC is tailored for microcontrollers which can work in both full-power and
sleep mode. With an additional voltage monitoring (power-on reset and supply voltage
drop reset), the U5020M offers a complete monitoring solution for microsystems in
automotive and industrial applications.
Rev. 4755A–AUTO–11/03

U5020M Related Products

U5020M U5020M-FP
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