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4256BWP Datasheet(PDF) 24 Page - STMicroelectronics

Part # 4256BWP
Description  256Kbit and 128Kbit Serial I2C Bus EEPROM With Three Chip Enable Lines
PDF  25 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

4256BWP Datasheet(HTML) 24 Page - STMicroelectronics

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M24128-BW, M24128-BR, M24256-BW, M24256-BR
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REVISION HISTORY
Table 21. Document Revision History
Date
Rev.
Description of Revision
28-Dec-1999
2.1
TSSOP8 package added
24-Feb-2000
2.2
E2, E1, E0 must be tied to Vcc or Vss
Low Pass Filter Time Constant changed to Glitch Filter
22-Nov-2000
2.3
-V voltage range added
30-Jan-2001
2.4
-V voltage range changed to 2.5V to 3.6V
Lead Soldering Temperature in the Absolute Maximum Ratings table amended
Write Cycle Polling Flow Chart using ACK illustration updated. SO8(wide) package added
References to PSDIP8 changed to PDIP8, and Package Mechanical data updated
01-Jun-2001
2.5
-R voltage range added. Package mechanical data updated for TSSOP8 and TSSOP14
packages according to JEDEC\MO-153
Document promoted from “Preliminary Data” to “Full Data Sheet”
16-Oct-2001
2.6
TSSOP14 package removed
Absolute Max Ratings and DC characteristics updated for M24256-BV
09-Nov-2001
2.7
Specification of Test Condition for Leakage Currents in the DC Characteristics table improved
21-Mar-2002
2.8
1 million Erase/Write cycle endurance for M24256-B and M24256-BW products with process
letter "V"
18-Oct-2002
3.0
Document reformatted. Parameters changed are: 1 million Erase/Write cycle endurance and 5
ms write time for M24128-B and M24128-BW products with process letter "B".
20-Nov-2002
3.1
Superfluous (and incorrectly present) 100kHz AC Characteristics table for M24256-BR
removed.
02-Jun-2003
3.2
Initial delivery state specified. -R and -S ranges are no longer Preliminary Data. Package
mechanical data for unavailable package removed.
22-Oct-2003
4.0
Table of contents, and Pb-free options added. Minor wording changes in Summary
Description, Power-On Reset, Memory Addressing, Write Operations, Read Operations.
VIL(min) improved to -0.45V.
16-Apr-2004
5.0
SO8W package added. Absolute Maximum Ratings for VIO(min) and VCC(min) changed.
Soldering temperature information clarified for RoHS compliant devices.
13-Jun-2005
6.0
M24xxx-B, M24xxx-BV and M24xxx-BS removed from the datasheet.
Product List summary table added.
Power On Reset paragraph updated.
Figure 4., Maximum RP Value versus Bus Parasitic Capacitance (C) for an I2C Bus updated.
ZL and ZH definition changed.
ICC and ICC1 updated in Table 12., DC Characteristics (M24128-BW, M24256-BW).
Device Grade information further clarified to Table 20., Ordering Information Scheme.



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