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STMicroelectronics - 256/128 Kbit Serial I C Bus EEPROM With Three Chip Enable Lines

Numéro de référence M24128-B
Description 256/128 Kbit Serial I C Bus EEPROM With Three Chip Enable Lines
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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M24128-B fiche technique
M24256-B
M24128-B
256/128 Kbit Serial I C Bus EEPROM
With Three Chip Enable Lines
PRELIMINARY DATA
s Compatible with I2C Extended Addressing
s Two Wire I2C Serial Interface
Supports 400 kHz Protocol
s Single Supply Voltage:
– 4.5V to 5.5V for M24xxx-B
– 2.5V to 5.5V for M24xxx-BW
– 1.8V to 3.6V for M24xxx-BR
s Hardware Write Control
s BYTE and PAGE WRITE (up to 64 Bytes)
s RANDOM and SEQUENTIAL READ Modes
s Self-Timed Programming Cycle
s Automatic Address Incrementing
s Enhanced ESD/Latch-Up Behavior
s 100000 Erase/Write Cycles (minimum)
s 40 Year Data Retention (minimum)
DESCRIPTION
These I2C-compatible electrically erasable pro-
grammable memory (EEPROM) devices are orga-
nized as 32Kx8 bits (M24256-B) and 16Kx8 bits
(M24128-B).
These memory devices are compatible with the
I2C extended memory standard. This is a two wire
serial interface that uses a bi-directional data bus
and serial clock. The memory carries a built-in 4-
bit unique Device Type Identifier code (1010) in
accordance with the I2C bus definition.
Table 1. Signal Names
E0, E1, E2
Chip Enable Inputs
SDA
Serial Data/Address Input/
Output
SCL
Serial Clock
WC Write Control
VCC
Supply Voltage
VSS Ground
8
1
PSDIP8 (BN)
0.25 mm frame
8
1
SO8 (MN)
150 mil width
14
1
TSSOP14 (DL)
169 mil width
8
1
TSSOP8 (DW)
169 mil width
Figure 1. Logic Diagram
VCC
3
E0-E2
SCL
WC
M24256-B
M24128-B
VSS
SDA
AI02809
February 2000
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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