CAT28HT256D-25 datasheet(1/10 Pages) CATALYST

No. de pieza	CAT28HT256D-25

Descripción Electrónicos	256K-Bit CMOS PARALLEL E2PROM

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Fabricante Electrónico	CATALYST [Catalyst Semiconductor]

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CAT28HT256

256K-Bit CMOS PARALLEL E2PROM

FEATURES

s Fast Read Access Times: 200/250 ns

s Low Power CMOS Dissipation:

–Active: 30 mA Max.

–Standby: 150

µA Max.

s Simple Write Operation:

–On-Chip Address and Data Latches

–Self-Timed Write Cycle with Auto-Clear

s Fast Write Cycle Time:

–10ms Max

s CMOS and TTL Compatible I/O

s Automatic Page Write Operation:

–1 to 64 Bytes in 10ms

–Page Load Timer

s End of Write Detection:

–Toggle Bit

–

DATA

DATA Polling

s Hardware and Software Write Protection

s 100,000 Program/Erase Cycles

s 100 Year Data Retention

DESCRIPTION

The CAT28HT256 is a fast, low power, 5V-only CMOS

parallel E2PROM organized as 32K x 8-bits. It requires

a simple interface for in-system programming. On-chip

address and data latches, self-timed write cycle with

auto-clear and VCC power up/down write protection

eliminate additional timing and protection hardware.

DATA Polling and Toggle status bits signal the start and

end of the self-timed write cycle. Additionally, the

CAT28HT256 features hardware and software write

protection as well as an internal Error Correction Code

(ECC) for extremely high reliability.

The CAT28HT256 is manufactured using Catalyst’s

advanced CMOS floating gate technology. It is designed

to endure 100,000 program/erase cycles and has a data

retention of 100 years. The device is available in JEDEC

approved 28-pin Ceramic DIP package.

BLOCK DIAGRAM

5096 FHD F02

Characteristics subject to change without notice

Advanced

Extended Temperature: 170˚C

ADDR. BUFFER

& LATCHES

ADDR. BUFFER

& LATCHES

INADVERTENT

WRITE

PROTECTION

CONTROL

LOGIC

TIMER

ROW

DECODER

COLUMN

DECODER

HIGH VOLTAGE

GENERATOR

A6–A14

CE

OE

WE

A0–A5

I/O0–I/O7

I/O BUFFERS

32,768 x 8

E2PROM

ARRAY

64 BYTE PAGE

REGISTER

VCC

DATA POLLING

AND

TOGGLE BIT

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CAT28HT256D-25 Datasheet(PDF) 1 Page - Catalyst Semiconductor

CAT28HT256D-25 Datasheet(HTML) 1 Page - Catalyst Semiconductor

Número de pieza similar - CAT28HT256D-25

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