AS1920 Просмотр технического описания (PDF) - austriamicrosystems AG

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AS1920

Triple-Voltage, Micro-Power Microprocessor Supervisory Circuits

austriamicrosystems AG 

AS1920/AS1922

Datasheet - Application Information

Figure 13. Triple-Supply Monitor (3V, 1.8V, Adjustable)

5

3V

VCC3

1

RESETN

1.8V

Adjustable Supply

or DC/DC Feed-

back Divider

R1

To ensure threshold accuracy,

set the parallel combination of

R1 and R2 ≤ 66.5kΩ

4

VCC18 AS1920-18

3

VCCA

R2

2

GND

System

Reset

Figure 14. Dual-Supply Monitor (3V and 1.8V; Disable VCCA Input)

3V

1.8V

5

VCC3

1

RESETN

4

VCC18 AS1920-18

3

VCCA

2

GND

System

Reset

Figure 15. Dual-Supply Monitor (3V and Adjustable)

3V

Adjustable Supply

or DC/DC Feed-

back Divider

R1

To ensure threshold accuracy, R2

set the parallel combination of

R1 and R2 ≤ 66.5kΩ

5

VCC3

1

RESETN

4

VCC18 AS1920-18

3

VCCA

2

GND

System

Reset

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