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UM821 Datasheet Up Reset Circuits

Manufacturer: Union Semiconductor

Overview: UM807/821/822 μP Reset Circuits with Long Manual Reset Setup Period UM807/821/822.

This datasheet includes multiple variants, all published together in a single manufacturer document.

Datasheet Details

Part number UM821
Manufacturer Union Semiconductor
File Size 322.08 KB
Description uP Reset Circuits
Datasheet UM821 UM807 Datasheet (PDF)

General Description

The UM807/821/822 are low-power microprocessor (μP) supervisory circuits used to monitor power supplies in μP and digital systems.

They provide excellent circuit reliability and low cost by eliminating external ponents and adjustments when used with 5V-powered or 3V-powered circuits.

The UM807/821/822 also provide a debounced manual reset input with long setup period.

Key Features

  • z Set-Top Boxes z Consumer Electronics z DVD Players z Cable/DSL Modems z MP3 Players z Industrial Equipments z Automotive z Medical Devices z No External Components z VCC Transient Immunity z Correct Logic Output Guaranteed to VCC=1.0V z Precision VCC Monitoring of 3.0V, 3.3V and 5.0V Supplies z 2μA Supply Current z 140ms Minimum Power-On Reset Pulse Width z Available in 3 Manual Reset Setup Periods (tMR): A: 10.08s B: 6.72s C: 1.68s z Available in 3 Output Con_f__i_g__u__r_a__t_i_ons: Open-D.

More Datasheets from Union Semiconductor

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UM821 Distributor