CAT28C64B Просмотр технического описания (PDF) - Catalyst Semiconductor => Onsemi

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CAT28C64B

64K-Bit CMOS PARALLEL EEPROM

Catalyst Semiconductor => Onsemi 

CAT28C64B

64K-Bit CMOS PARALLEL EEPROM

FEATURES

I Fast read access times:

– 90/120/150ns

I Low power CMOS dissipation:

– Active: 25 mA max.

– Standby: 100 µA max.

I Simple write operation:

– On-chip address and data latches

– Self-timed write cycle with auto-clear

I Fast write cycle time:

– 5ms max.

I CMOS and TTL compatible I/O

I Hardware and software write protection

ALOGEN FR

LEAD

F

R

E

E

TM

I Commercial, industrial and automotive

temperature ranges

I Automatic page write operation:

– 1 to 32 bytes in 5ms

– Page load timer

I End of write detection:

– Toggle bit

– DATA polling

I 100,000 program/erase cycles

I 100 year data retention

DESCRIPTION

The CAT28C64B is a fast, low power, 5V-only CMOS

Parallel EEPROM organized as 8K 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

CAT28C64B features hardware and software write

protection.

The CAT28C64B 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 DIP, TSOP, SOIC, or, 32-pin PLCC

package .

BLOCK DIAGRAM

A5–A12

ADDR. BUFFER

& LATCHES

ROW

DECODER

8,192 x 8

EEPROM

ARRAY

VCC

INADVERTENT

WRITE

PROTECTION

HIGH VOLTAGE

GENERATOR

32 BYTE PAGE

REGISTER

CE

OE

WE

A0–A4

CONTROL

LOGIC

TIMER

ADDR. BUFFER

& LATCHES

DATA POLLING

AND

TOGGLE BIT

COLUMN

DECODER

I/O BUFFERS

I/O0–I/O7

© 2005 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

1

Doc. No. 1011, Rev. F

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