U5020M Datasheet PDF | TEMIC Semiconductors

TEMIC Semiconductors U5020M

The U5020M requires a stabilized supply voltage 5% to comply with its electrical VDD = 5 V characteristic. With an appropriate selection of components, the clock frequency, f, is nearly independent of the supply voltage as shown in figure 3. With an additional voltage monitoring (power-on reset and supply voltage drop reset) U5020M offers a complete monitoring solution for microsystems in automotive and industrial applications.

Part No.	U5020M
Datasheet	U5020M Download
Manufacturer	TEMIC Semiconductors
Description	Digital Window Watchdog Timer
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DESCRIPTION

The digital window watchdog timer, U5020M, is a CMOS integrated circuit. In application 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 makes the watchdog timer reset the microcontroller. The IC is tailored for microcontrollers which can work in both full-power and sleep mode.

FEATURES

D Low current consumption: IDD < 100 mA D RC–oscillator D Internal reset during power-up and supply voltage drops (POR) D Trigger input D Six wake-up inputs D Reset output D Enable output D “Short” trigger window for active mode “long” trigger window for sleep mode D Cyclical wake-up of microcontroller in sleep mode Ordering Information Extended Type Number U5020M–FP Package SO16 Remarks Block Diagram C R1 VDD C1 Reset 10 Input ts 16 OSC Trigger 11 Input sign...