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SUMMIT

MICROELECTRONICS, Inc.

S24022/S24023

3 and 5 Volt Systems

Precision RESET Controller and 2K I

2

C Memory

With Both RESET and

RESET

Outputs

FEATURES

鈥?Precision Supply Voltage Monitor

鈥?Dual reset outputs for complex

microcontroller systems

鈥?Integrated memory write lockout

鈥?Guaranteed RESET (RESET assertion

RESET)

RESET

to V

CC

=1V

鈥?Power-Fail Accuracy Guaranteed

鈥?No External Components

鈥?3 and 5 Volt system versions

鈥?Low Power CMOS

鈥?Active current less than 3mA

鈥?Standby current less than 25

碌

A

鈥?Memory Internally Organized 256 X 8

鈥?Two Wire Serial Interface (I

2

C鈩?

鈥?Bidirectional data transfer protocol

鈥?Standard 100KHz and Fast 400KHz

鈥?/div>

High Reliability

鈥?Endurance: 1,000,000 erase/write cycles

鈥?Data retention: 100 years

8-Pin PDIP or SOIC Packages

OVERVIEW

The S24022 and S24023 are power supervisory devices

with 2,048 bits of serial E

2

PROM. They are fabricated

using SUMMIT's advanced CMOS E

2

PROM technology

and are suitable for both 3 and 5 volt systems.

The memory is internally organized as 256 x 8. It features

the I

2

C serial interface and software protocol allowing

operation on a simple two-wire bus.

The S24022 provides a precision V

CC

sense circuit and

two open drain outputs: one (RESET) drives high and the

other (RESET) drives low whenever V

CC

falls below

V

TRIP

. The S24023 is identical to the S24022 with the

exception being RESET is not bonded out on pin 7.

BLOCK DIAGRAM

VCC

8

2

5KHz

Oscillator

RESET

PULSE

GENERATOR

RESET

VCC

+

-

GND

4

1.26V

VTRIP

RESET

CONTROL

7

RESET

SCL 6

SDA 5

NC 1

NC 3

MODE

DECODE

ADDRESS

DECODER

WRITE

CONTROL

DATA I/O

E

2

PROM

MEMORY

ARRAY

2010 ILL2 1.3

SUMMIT MICROELECTRONICS, Inc.

鈥?/div>

300 Orchard City Drive, Suite 131

鈥?/div>

Campbell, CA 95008

鈥?/div>

Telephone 408-378-6461

鈥?/div>

Fax 408-378-6586

鈥?/div>

www.summitmicro.com

漏 SUMMIT MICROELECTRONICS, Inc. 1998

2010 1.4 5/3/98

Characteristics subject to change without notice

1

型號

版本

描述

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