IMP1832SEMA 查看數據表（PDF） - A1 PROs co., Ltd.

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IMP1832SEMA

3.3V µP Power Supply Monitor and Reset Circuit

A1 PROs co., Ltd. 

Pin Configuration

DIP/SO/MicroSO

PBRST 1

TD 2

TOL 3

GND 4

IMP1832

8 VCC

7 ST

6 RESET

5 RESET

1832_01.eps

IMP1832

Pin Descriptions

Pin Number

8-Pin Package

1

2

3

4

5

Name

PBRST

TD

TOL

GND

RESET

6

RESET

7

ST

8

VCC

Function

Debounced manual pushbutton reset input

Watchdog time delay selection. (tTD = 150ms for TD = GND, tTD = 610ms for TD = Open,

and tTD =1200ms for TD = VCC)

Selects 10% (TOL connected to GND) or 20% (TOL connected to VCC) trip point tolerance

Ground

Active HIGH reset output. RESET is active:

1. If VCC falls below the reset voltage trip point.

2. If PBRST is LOW.

3. If ST is not strobed LOW before the timeout period set by TD expires.

4. During power-up.

Active LOW reset output. (See RESET)

Strobe Input

5V power

Ordering Information

Part Number

IMP1832

IMP1832S

IMP1832SEMA

Package

8-DIP

8-SO

8-MicroSO

Operating Temperature

Range

– 40°C to 85°C

– 40°C to 85°C

– 40°C to 85°C

Maximum Supply

Current (µA)

20

20

20

Voltage Monitoring

Application

3.3V

3.3V

3.3V

1832_t01.eps

2

408-432-9100/www.impweb.com

© 1999 IMP, Inc.

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