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CAT28C257 fiches techniques PDF

ON Semiconductor - 256 kb CMOS Parallel EEPROM

Numéro de référence CAT28C257
Description 256 kb CMOS Parallel EEPROM
Fabricant ON Semiconductor 
Logo ON Semiconductor 





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CAT28C257 fiche technique
CAT28C257
256 kb CMOS Parallel
EEPROM
Description
The CAT28C257 is a fast, low power, 5 Vonly CMOS Parallel
EEPROM organized as 32K x 8bits. It requires a simple interface for
insystem programming. Onchip address and data latches,
selftimed write cycle with autoclear 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 selftimed
write cycle. Additionally, the CAT28C257 features hardware and
software write protection.
The CAT28C257 is manufactured using ON Semiconductor’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 28pin DIP or 32pin
PLCC packages.
Features
Fast Read Access Times: 120/150 ns
Low Power CMOS Dissipation:
– Active: 25 mA Max.
– Standby: 150 mA Max.
Simple Write Operation:
– Onchip Address and Data Latches
– Selftimed Write Cycle with Autoclear
Fast Write Cycle Time:
5 ms Max.
CMOS and TTL Compatible I/O
Automatic Page Write Operation:
1 to 128 Bytes in 5 ms
Page Load Timer
End of Write Detection:
Toggle Bit
DATA Polling
Hardware and Software Write Protection
100,000 Program/Erase Cycles
100 Year Data Retention
Commercial, Industrial and Automotive Temperature Ranges
http://onsemi.com
PDIP28
P, L SUFFIX
CASE 646AE
PLCC32
N, G SUFFIX
CASE 776AK
Pin Name
A0A14
I/O0I/O7
CE
OE
WE
VCC
VSS
NC
PIN FUNCTION
Function
Address Inputs
Data Inputs/Outputs
Chip Enable
Output Enable
Write Enable
5 V Supply
Ground
No Connect
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
© Semiconductor Components Industries, LLC, 2009
December, 2009 Rev. 6
1
Publication Order Number:
CAT28C257/D

PagesPages 13
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