WS57C49C-35 STMICROELECTRONICS [STMicroelectronics], WS57C49C-35 Datasheet

WS57C49C-35

Manufacturer Part Number

WS57C49C-35

Description

MILITARY HIGH SPEED 8K x 8 CMOS PROM/RPROM

Manufacturer

STMICROELECTRONICS [STMicroelectronics]

Datasheet

1.WS57C49C-35.pdf (2 pages)

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MODE SELECTION

•

The WS57C49C is a High Performance 64K UV Erasable Electrically Re-Programmable Read Only Memory

(RPROM). It is manufactured in an advanced CMOS technology which enables it to operate at Bipolar PROM

speeds while consuming only 25% of the power required by its Bipolar counterparts. A further advantage of the

WS57C49C over Bipolar PROM devices is the fact that it utilizes a proven EPROM technology. This enables the

entire memory array to be tested for switching characteristics and functionality after assembly. Unlike devices which

cannot be erased, every WS57C49C in a windowed package is 100% tested with worst case test patterns both

before and after assembly.

The WS57C49C is configured in the standard Bipolar PROM pinout which provides an easy upgrade path for

systems which are currently using Bipolar PROMs, or its predecessor, the WS57C49B.

PRODUCT SELECTION GUIDE

Ultra-Fast Access Time

— t

Low Power Consumption

Fast Programming

Read

MODE

Output

Disable

Program

Verify

Address Access Time (Max)

CS to Output Valid Time (Max)

ACC

MILITARY HIGH SPEED 8K x 8 CMOS PROM/RPROM

PINS

= 20 ns

= 35 ns

Return to Main Menu

PARAMETER

CS1/V PP

V PP

V IH

V IL

V CC

OUTPUTS

GENERAL DESCRIPTION

WS57C49C-35

High Z

D OUT

D IN

35 ns

20 ns

KEY FEATURES

PIN CONFIGURATION

•

WS57C49C-45

Pin Compatible with Bipolar PROMs

Immune to Latch-UP

— Up to 200 mA

ESD Protection Exceeds 2000 V

Available in 300 and 600 Mil DIP, CLLCC,

and Flatpack

12 13 14 15 16 17 18

4 3 2

45 ns

25 ns

Chip Carrier

GND

NC O

28 27 26

WS57C49C-55

TOP VIEW

CS1/V

55 ns

25 ns

GND

CERDIP/Flatpack

WS57C49C

WS57C49C-70

70 ns

25 ns

A 10

CS1/V

4-9

Related parts for WS57C49C-35

WS57C49C-35 Summary of contents

Page 1

... OUT GND WS57C49C-35 WS57C49C- WS57C49C TOP VIEW CERDIP/Flatpack ...

... WS57C49C ORDERING INFORMATION SPEED PART NUMBER (ns) * WS57C49C-35CMB 35 * WS57C49C-35TMB 45 WS57C49C-35DMB 45 * WS57C49C-45CMB 45 * WS57C49C-45DMB 45 * WS57C49C-45TMB 45 * WS57C49C-55CMB 55 * WS57C49C-55DMB 55 * WS57C49C-55FMB 55 * WS57C49C-55TMB 55 * WS57C49C-70CMB 70 * WS57C49C-70TMB 70 NOTE: The actual part marking will not include the initials "WS." * SMD product. See page 4-1 for DESC SMD numbers. PROGRAMMING/ALGORITHMS/ERASURE/PROGRAMMERS The WS57C49C is programmed using Algorithm D shown on page 5-9. ...

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WS57C49C-35 STMICROELECTRONICS [STMicroelectronics], WS57C49C-35 Datasheet

WS57C49C-35

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WS57C49C-35 Summary of contents

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