SMS2902 datasheet(1/14 Pages) SUMMIT

номер детали	SMS2902

подробное описание детали	Voltage Supervisory Circuit With Watchdog Timer

PDF	14 Pages

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производитель	SUMMIT [Summit Microelectronics, Inc.]

домашняя страница	http://www.summitmicro.com

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SUMMIT MICROELECTRONICS, Inc.

•

300 Orchard City Drive, Suite 131

•

Campbell, CA 95008

•

Telephone 408-378-6461

•

Fax 408-378-6586

•

www.summitmicro.com

1

2028 5.1 8/2/00

Characteristics subject to change without notice

SUMMIT

MICROELECTRONICS, Inc.

FEATURES

•

Precision Voltage Monitor

–VCC Supply Monitor

- Complementary reset outputs for complex

microcontroller systems

- Integrated memory write lockout function

- No external components required

•Watchdog Timer

– 1600 ms, internal

•

Two Wire Serial Interface (I2C™)

•

Extended Programmable Functions

available on SMS24

•

High Reliability

– Endurance: 100,000 erase/write cycles

– Data retention: 100 years

•

8-Pin SOIC Packages

Voltage Supervisory Circuit With Watchdog Timer

SMS2902/SMS2904/SMS2916

OVERVIEW

The SMS29xx is a power supervisory circuit that monitors

VCC and will generate complementary reset outputs. The

reset pins also act as I/Os and may be used for signal

conditioning. The SMS29xx also has an on-board watch-

dog timer.

The SMS29xx integrates a nonvolatile serial memory. It

features

the

industry

standard

I2C

serial

interface allowing quick implementation in an end-users’

system.

BLOCK DIAGRAM

+

–

GND

VCC

8

4

RESET#

2

VTRIP

RESET

CONTROL

RESET

7

1.26V

SCL

6

SDA

5

WATCHDOG

TIMER

WDI#

1

2028 T BD 2.0

WRITE

CONTROL

NONVOLATILE

MEMORY

ARRAY

PROGRAMMABLE

RESET PULSE

GENERATOR

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