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STMicroelectronics Electronic Components Datasheet


M24512BN

512 Kbit Serial IC Bus EEPROM



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M24512BN pdf
M24512
512 Kbit Serial I²C Bus EEPROM
PRODUCT PREVIEW
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 M24512
– 2.5V to 5.5V for M24512-W
– 1.8V to 3.6V for M24512-R
s Hardware Write Control
s BYTE and PAGE WRITE (up to 128 Bytes)
s RANDOM and SEQUENTIAL READ Modes
s Self-Timed Programming Cycle
s Automatic Address Incrementing
s Enhanced ESD/Latch-Up Behaviour
s 100000 Erase/Write Cycles (minimum)
s 40 Year Data Retention (minimum)
DESCRIPTION
These I2C-compatible electrically erasable pro-
grammable memory (EEPROM) devices are or-
ganised as 64Kx8 bits, and operate down to 2.5 V
(for the -W version), and down to 1.8 V (for the -R
version).
The and M24512 are available in Plastic Dual-in-
Line, Plastic Small Outline and Thin Shrink Small
Outline packages.
These memory devices are compatible with the
I2C extended memory standard. This is a two wire
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
16
1
SO16 (MJ)
300 mil width
Figure 1. Logic Diagram
VCC
3
E0-E2
SCL
WC
M24512
VSS
SDA
AI02275
September 1999
This is preliminary information on a new product now in development. Details are subject to change without notice.
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M24512BN pdf
M24512
Figure 2A. DIP Connections
M24512
E0
E1
E2
VSS
1
2
3
4
8 VCC
7 WC
6 SCL
5 SDA
AI02276
Figure 2B. SO Connections
M24512
NC
NC
E0
E1
E2
VSS
NC
NC
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
AI02286
NC
NC
VCC
WC
SCL
SDA
NC
NC
Note: 1. NC = Not Connected
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.
The memory behaves as a slave device in the I2C
protocol, with all memory operations synchronized
by the serial clock. Read and Write operations are
initiated by a START condition, generated by the
bus master. The START condition is followed by a
Device Select Code and RW bit (as described in
Table 3), terminated by an acknowledge bit.
When writing data to the memory, the memory in-
serts an acknowledge bit during the 9th bit time,
following the bus master’s 8-bit transmission.
When data is read by the bus master, the bus
master acknowledges the receipt of the data byte
in the same way. Data transfers are terminated by
a STOP condition after an Ack for WRITE, and af-
ter a NoAck for READ.
Power On Reset: VCC Lock-Out Write Protect
In order to prevent data corruption and inadvertent
write operations during power up, a Power On Re-
set (POR) circuit is included. The internal reset is
held active until the VCC voltage has reached the
POR threshold value, and all operations are dis-
abled – the device will not respond to any com-
mand. In the same way, when VCC drops from the
operating voltage, below the POR threshold value,
all operations are disabled and the device will not
respond to any command. A stable and valid VCC
must be applied before applying any logic signal.
Table 2. Absolute Maximum Ratings 1
Symbol
Parameter
Value
Unit
TA Ambient Operating Temperature
-40 to 125
°C
TSTG
Storage Temperature
-65 to 150
°C
TLEAD
Lead Temperature during Soldering
PSDIP8: 10 sec
SO8: 40 sec
260
215
°C
VIO Input or Output range
-0.6 to 6.5
V
VCC Supply Voltage
-0.3 to 6.5
V
VESD
Electrostatic Discharge Voltage (Human Body model) 2
Electrostatic Discharge Voltage (Machine model) 3
4000
500
V
V
Note: 1. Except for the rating “Operating Temperature Range”, stresses above those listed in the Table “Absolute Maximum Ratings” may
cause permanent damage to the device. These are stress ratings only, and operation of the device at these or any other conditions
above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating condi-
tions for extended periods may affect device reliability. Refer also to the ST SURE Program and other relevant quality documents.
2. MIL-STD-883C, 3015.7 (100 pF, 1500 )
3. EIAJ IC-121 (Condition C) (200 pF, 0 )
2/16



Part Number M24512BN
Description 512 Kbit Serial IC Bus EEPROM
Maker STMicroelectronics - STMicroelectronics
Total Page 16 Pages
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