S93WD462 Datasheet

IC型號：
S93WD462
PDF描述：
Precision Supply-Voltage Monitor and Reset Controller With a...
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14頁
芯片廠家：
ETC

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SUMMIT

MICROELECTRONICS, Inc.

S93WD462/S93WD463

Precision Supply-Voltage Monitor and Reset Controller

With a Watchdog Timer and 1k-bit Microwire Memory

FEATURES

鈥?Precision Monitor & RESET Controller

鈥?RESET and RESET Outputs

鈥?Guaranteed RESET Assertion to V

= 1V

鈥?150ms Reset Pulse Width

鈥?Internal 1.26V Reference with 鹵1% Accuracy

鈥?ZERO External Components Required

鈥?Watchdog Timer

鈥?Nominal 1.6 Second Time-out Period

鈥?Reset by Any Transition of CS

鈥?Memory

鈥?1K-bit Microwire Memory

鈥?S93WD462

鈥?Internally Ties ORG Low

鈥?100% Compatible With all 8-bit

Implementations

鈥?Sixteen Byte Page Write Capability

鈥?S93WD463

鈥?Internally Ties ORG High

鈥?100% Compatible With all 16-bit

Implementations

鈥?Eight Word Page Write Capability

OVERVIEW

The S93WD462 and S93WD463 are precision power

supervisory circuits providing both active high and

active low reset output. Both devices also incorporate a

watchdog timer with a nominal time-out value of 1.6

seconds.

Both devices have 1k-bits of E

PROM memory that is

accessible via the industry standard microwire bus. The

S93WD462 is configured with an internal ORG pin tied

low providing a 8-bit byte organization and the

S93WD463 is configured with an internal ORG pin tied

high providing a 16-bit word organization. Both the

S93WD462 and S93WD463 have page write capabil-

ity. The devices are designed for a minimum 100,000

program/erase cycles and have data retention in ex-

cess of 100 years.

BLOCK DIAGRAM

VCC

5kHz

OSCILLATOR

RESET

PULSE

GENERATOR

RESET#

鈥?/div>

VTRIP

RESET

CONTROL

RESET

1.26V

WATCHDOG

TIMER

MODE

DECODE

ADDRESS

DECODER

WRITE

CONTROL

DATA I/O

GND

E2PROM

MEMORY

ARRAY

2029 T BD 2.0

漏 SUMMIT MICROELECTRONICS, Inc. 2001 鈥?300 Orchard City Drive, Suite 131 鈥?Campbell, CA 95008 鈥?Telephone 408-378-6461 鈥?Fax 408-378-6586 鈥?www.summitmicro.com

Characteristics subject to change without notice

2029 2.2 1/23/01

型號

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描述

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