Datasheet > CAT28C256LI-12T

CAT28C256LI-12T

更新时间： 2024-10-27 03:06:19

品牌	Logo	应用领域
CATALYST		内存集成电路光电二极管可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
12页	526K
描述
256K-Bit Parallel EEPROM

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CAT28C256LI-12T 数据手册

CAT28C256

256K-Bit Parallel EEPROM

FEATURES

■ Hardware and software write protection

■ Fast read access times: 120/150ns

■ Automatic page write operation:

–1 to 64 bytes in 5ms

■ Low power CMOS dissipation:

–Active: 25 mA max

–Page load timer

–Standby: 150 µA max

■ End of write detection:

–Toggle bit

■ Simple write operation:

–On-chip address and data latches

–Self-timed write cycle with auto-clear

–DATA polling

■ 100,000 program/erase cycles

■ 100 year data retention

■ Fast write cycle time:

–5ms max

■ CMOS and TTL compatible I/O

■ Commerical, industrial and automotive

temperature ranges

DESCRIPTION

The CAT28C256 is a fast, low power, 5V-only CMOS

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

simple interface for in-system programming. On-chip

addressanddatalatches,self-timedwritecyclewithauto-

clear and V_CCpower 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 CAT28C256 features

hardware and software write protection.

The CAT28C256 is manufactured using Catalyst’s ad-

vancedCMOSfloatinggatetechnology. Itisdesignedto

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

retention of 100 years. The device is available in JEDEC

approved 28-pin DIP, 28-pin TSOP or 32-pin PLCC

packages.

BLOCK DIAGRAM

32,768 x 8

EEPROM

ARRAY

ROW

DECODER

ADDR. BUFFER

A –A

& LATCHES

INADVERTENT

WRITE

PROTECTION

HIGH VOLTAGE

GENERATOR

64 BYTE PAGE

CONTROL

LOGIC

I/O BUFFERS

DATA POLLING

AND

TIMER

TOGGLE BIT

I/O –I/O

ADDR. BUFFER

& LATCHES

A –A

COLUMN

DECODER

Doc. No. 1004, Rev. D

Characteristics subject to change without notice

12 3 4 5 6 7...12

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与CAT28C256LI-12T相关器件

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