M24C32-WMN6P STMicroelectronics, M24C32-WMN6P Datasheet - Page 14

• Manufacturer Part Number: M24C32-WMN6P
• Description: IC EEPROM 32KBIT 400KHZ 8SOIC
• Manufacturer: STMicroelectronics

Specifications of M24C32-WMN6P

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 32K (4K 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)
• Organization: 4 K x 8
• Interface Type: I2C
• Maximum Clock Frequency: 0.4 MHz
• Access Time: 900 ns
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.5 V
• Maximum Operating Current: 2 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 2.5 V, 5.5 V
• Memory Configuration: 4096 X 8
• Clock Frequency: 400kHz
• Supply Voltage Range: 2.5V To 5.5V
• Memory Case Style: SO
• No. Of Pins: 8
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8572; M24C32-WMN6P

Device operation
4.5
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Memory addressing
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 5.
1. X =
Current Address
Read
Random Address
Read
Sequential Read
Byte Write
Page Write
Table 2
th
Mode
V
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).
IL
Operating modes
.
RW bit WC
1
0
1
1
0
0
V
V
X
X
X
X
IL
IL
(1)
Doc ID 4578 Rev 17
Bytes
 32
 1
1
1
1
th
Start, device select, RW = 1
Start, device select, RW = 0, Address
reStart, 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
M24C32-W M24C32-R M24C32-F
2
C bus. Each one is given a
Initial sequence