ASM1832F datasheet(1/9 Pages) ONSEMI

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August, 2011 − Rev. 3

1

Publication Order Number:

ASM1832/D

ASM1832

3.3 V mP Power Supply

Monitor and Reset Circuit

Description

The ASM1832 is a fully integrated microprocessor supervisor. It

can halt and restart a “hung−up” microprocessor, restart a

microprocessor after a power failure. It has a watchdog timer and

external reset override. RESET and RESET outputs are push−pull.

A precision temperature−compensated reference and comparator

circuits monitor the 3.3 V, VCC input voltage status. During power−up

or when the VCC power supply falls outside selectable tolerance

limits, both RESET and RESET become active. When VCC rises

above the threshold voltage, the reset signals remain active for an

additional 250 ms minimum, allowing the power supply and system

microprocessor to stabilize. The trip point tolerance signal, TOL,

selects the trip level tolerance to be either 10% or 20%.

A debounced manual reset input, PBRST, activates the reset outputs

for a minimum period of 250 ms. There is a watchdog timer to stop and

restart a microprocessor that is “hung−up”. The watchdog timeouts

periods are selectable: 150 ms, 610 ms, and 1200 ms. If the ST input is

not strobed LOW before the time−out period expires, a reset is

generated.

Devices are available in 8−pin PDIP, 8−pin SO and compact 8−pin

MicroSO packages.

Features

• 3.3 V Supply Monitor

• Push−pull Output

• Selectable Watchdog Period

• Debounce Manual Push−button Reset Input

• Precision Temperature−compensated Voltage Reference and

Comparator

• Power−up, Power−down and Brown Out Detection

• 250 ms Minimum Reset Time

• Active LOW and HIGH Reset Signal

• Selectable Trip Point Tolerance: 10% or 20%

• Low−cost 8−pin DIP/SO and 8−pin Micro SO Packages

• Wide Operating Temperature: −40°C to +85°C

Applications

• Microprocessor Systems

• Computers

• Controllers

• Portable Instruments

• Automotive Systems

http://onsemi.com

PIN CONFIGURATION

See detailed ordering and shipping information in the package

dimensions section on page 9 of this data sheet.

ORDERING INFORMATION

PDIP−8

NO SUFFIX

CASE 646AA

SOIC−8

S SUFFIX

CASE 751BD

PBRST

TD

TOL

GND

VCC

ST

RESET

ASM1832

1

MICRO−8

U SUFFIX

CASE 846AA

Số phần tương tự - ASM1832F

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Alliance Semiconductor ...	ASM1832F	259Kb / 9P	3.3V UP Power Supply Monitor and Reset Circuit
PulseCore Semiconductor	ASM1832F	202Kb / 9P	3.3V 關P Power Supply Monitor and Reset Circuit

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Mô tả tương tự - ASM1832F

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Maxim Integrated Produc...	MAX709	69Kb / 8P	Power-Supply Monitor with Reset Rev. 1; 6/94
Alliance Semiconductor ...	ASM1832	259Kb / 9P	3.3V UP Power Supply Monitor and Reset Circuit
Alliance Semiconductor ...	ASM1232LP	276Kb / 10P	5V uP Power Supply Monitor and Reset Circuit
Catalyst Semiconductor	CAT1232LP	117Kb / 9P	5V and 3.3V Supply Voltage Monitor and Reset Circuit
PulseCore Semiconductor	ASM1232LP	285Kb / 10P	5V 關P Power Supply Monitor and Reset Circuit
PulseCore Semiconductor	ASM1832	202Kb / 9P	3.3V 關P Power Supply Monitor and Reset Circuit
Maxim Integrated Produc...	MAX700	84Kb / 6P	Power-Supply Monitor with Reset 19-2690; Rev 2; 12/07
ON Semiconductor	ASM1232LP	173Kb / 12P	5 V P Power Supply Monitor and Reset Circuit August, 2011 ??Rev. 3
Maxim Integrated Produc...	MAX709L	178Kb / 8P	Power-Supply Monitor with Reset Rev. 2; 12/05
Maxim Integrated Produc...	MAX700	255Kb / 6P	Power-Supply Monitor with Reset 2014

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