M24512-WMN6TP STMicroelectronics, M24512-WMN6TP Datasheet - Page 14

• Manufacturer Part Number: M24512-WMN6TP
• Description: IC EEPROM 512KBIT 400KHZ 8SOIC
• Manufacturer: STMicroelectronics

Specifications of M24512-WMN6TP

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 512K (64K x 8)
• Speed: 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Density: 512Kb
• Interface Type: Serial (I2C)
• Organization: 64Kx8
• Access Time (max): 900ns
• Frequency (max): 400KHz
• Write Protection: Yes
• Data Retention: 40Year
• Operating Supply Voltage (typ): 3.3/5V
• Operating Temp Range: -40C to 85C
• Supply Current: 5mA
• Operating Supply Voltage (min): 2.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8626-2; M24512-WMN6TP

Device operation
3.5
3.6
14/41
Addressing the memory array
To start communication between the bus master and the slave device, the bus master must
initiate a Start condition. Following this, the bus master sends the device select code, shown
in
The device select code consists of a 4-bit device type identifier, and a 3-bit Chip Enable
“Address” (E2, E1, E0). To address the memory array, the 4-bit Device Type Identifier is
1010b.
Up to eight memory devices can be connected on a single I
unique 3-bit code on the Chip Enable (E0, E1, E2) inputs. When the device select code is
received, the device only responds if the Chip Enable Address is the same as the value on
the Chip Enable (E0, E1, E2) inputs.
The 8
If a match occurs on the device select code, the corresponding device gives an
acknowledgment on Serial Data (SDA) during the 9
the device select code, it deselects itself from the bus, and goes into Standby mode.
Table 6.
1. X = V
Addressing the Identification page (M24512-DR only)
The M24512-DR features an additional memory page, referred to as Identification page.
Read and write operations can be performed on this page, except if a Lock instruction has
been issued to permanently write protect it.
The M24512-DR Identification page is addressed in the same way as the memory array,
except that the 4-bit device type identifier of the device select code is 1011b (see
Current Address
Read
Random Address
Read
Sequential Read
Byte Write
Page Write
Table 2
th
Mode
IH
bit is the Read/Write bit (RW). This bit is set to 1 for Read and 0 for Write operations.
or V
(on Serial Data (SDA), most significant bit first).
Operating modes
IL
.
RW bit
1
0
1
1
0
0
WC
Doc ID 16459 Rev 22
V
V
X
X
X
X
IL
IL
(1)
Bytes
 128
 1
1
1
1
th
Start, device select, RW = 1
Start, device select, RW = 0, Address
re-Start, device select, RW = 1
Similar to Current or Random Address
Read
Start, device select, RW = 0
Start, device select, RW = 0
bit time. If the device does not match
M24512-R, M24512-W, M24512-DR
2
C bus. Each one is given a
Initial sequence
Table
3).