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AS1922 - Triple-Voltage Micro-Power Microprocessor Supervisory Circuits

This page provides the datasheet information for the AS1922, a member of the AS1920 Triple-Voltage Micro-Power Microprocessor Supervisory Circuits family.

Description

The AS1920 and AS1922 microprocessor supervisory circuits were designed to generate a reset when at least one of the three monitored supply voltages falls below its respective trip threshold.

Features

  • ! Simultaneous Triple-Voltage Monitoring Very-Low Supply Current: 6.2µA ±1.5% Accuracy Over Temperature Reset Time Delay: 200ms Power Supply Transient Immunity Guaranteed Reset for VCC3 ≥ 1V or VCC18 ≥ 1V Active-Low Push/Pull Reset Output (AS1920) Active-Low Open-Drain Reset Output (AS1922) 5-pin SOT23 Package ! ! ! ! ! ! All devices monitor primary and secondary factorytrimmed voltages. Additionally, a third monitoring voltage can be selected via an external resistor divider. The AS1920.

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Datasheet Details

Part number AS1922
Manufacturer austriamicrosystems AG
File Size 309.30 KB
Description Triple-Voltage Micro-Power Microprocessor Supervisory Circuits
Datasheet download datasheet AS1922 Datasheet
Additional preview pages of the AS1922 datasheet.

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Full PDF Text Transcription

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www.DataSheet4U.com AS1920, AS1922 Tr i p l e - Vo l ta g e , M i c r o - P o w e r M i c r o p r o c e s s o r Supervi s ory Ci rcuits D a ta S h e e t 1 General Description The AS1920 and AS1922 microprocessor supervisory circuits were designed to generate a reset when at least one of the three monitored supply voltages falls below its respective trip threshold. These very-low-current (6.2µA, typ) devices maintain reset for a minimum timeout period after all supplies have stabilized. Guaranteed to be in the correct state for VCC > +1.0V, these devices are perfect for multiple-voltage systems with low current requirements and strict monitoring requirements. The devices are available as the standard products listed in Table 1. Table 1.
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