M24512 STMicroelectronics, M24512 Datasheet - Page 2

• Manufacturer Part Number: M24512
• Description: 512 Kbit Serial IC Bus EEPROM
• Manufacturer: STMicroelectronics

M24512
Figure 2A. DIP Connections
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 I
The memory behaves as a slave device in the I
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 9
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
Table 2. Absolute Maximum Ratings
Note: 1. Except for the rating “Operating Temperature Range”, stresses above those listed in the Table “Absolute Maximum Ratings” may
2/16
Symbol
T
2. MIL-STD-883C, 3015.7 (100 pF, 1500
3. EIAJ IC-121 (Condition C) (200 pF, 0
T
V
V
V
LEAD
T
STG
ESD
CC
A
IO
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.
V SS
Ambient Operating Temperature
Storage Temperature
Lead Temperature during Soldering
Input or Output range
Supply Voltage
Electrostatic Discharge Voltage (Human Body model)
Electrostatic Discharge Voltage (Machine model)
E0
E1
E2
1
2
3
4
M24512
2
C bus definition.
AI02276
8
7
6
5
V CC
WC
SCL
SDA
)
)
th
1
Parameter
bit time,
2
C
Figure 2B. SO Connections
Note: 1. NC = Not Connected
a STOP condition after an Ack for WRITE, and af-
ter a NoAck for READ.
Power On Reset: V
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 V
POR threshold value, and all operations are dis-
abled – the device will not respond to any com-
mand. In the same way, when V
operating voltage, below the POR threshold value,
all operations are disabled and the device will not
respond to any command. A stable and valid V
must be applied before applying any logic signal.
PSDIP8: 10 sec
SO8: 40 sec
3
2
V SS
NC
NC
NC
NC
E0
E1
E2
CC
1
2
3
4
5
6
7
8
M24512
CC
Lock-Out Write Protect
AI02286
-40 to 125
-65 to 150
-0.6 to 6.5
-0.3 to 6.5
voltage has reached the
16
15
14
13
12
11
10
Value
4000
9
260
215
500
CC
NC
NC
V CC
WC
SCL
SDA
NC
NC
drops from the
Unit
°C
°C
°C
V
V
V
V
CC