Datasheet > AS1920_07

AS1920_07

更新时间： 2022-05-10 15:58:19

品牌	Logo	应用领域
艾迈斯 - AMSCO		微处理器监控
页数	文件大小	规格书
15页	733K
描述
Triple-Voltage, Micro-Power Microprocessor Supervisory Circuits

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AS1920_07 数据手册

AS1920/AS1922

Datasheet - Detailed Description

8 Detailed Description

The AS1920/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 (6.5µA, typ) devices maintain reset for a minimum timeout period after all supplies have stabi-

lized. 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.

Figure 9. AS1920 Block Diagram

–

VCC3

Power

Detect

VCC

Internal

VCC3

VCC18

200ms Pulse Generator

–

RESETN

200ms

Delay

–

VCCA

Bandgap

Reference

AS1920

GND

Figure 10. VCC Monitor Timing Diagram

VRTX

V^CCX

tRST

tUV

RESETN

1.5V

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