M24256-WMW6T STMicroelectronics, M24256-WMW6T Datasheet - Page 6

• Manufacturer Part Number: M24256-WMW6T
• Manufacturer: STMicroelectronics

Specifications of M24256-WMW6T

• Density: 256Kb
• Interface Type: Serial (I2C)
• Organization: 32Kx8
• Access Time (max): 900ns
• Frequency (max): 400KHz
• Write Protection: Yes
• Data Retention: 40Year
• Operating Supply Voltage (typ): 3.3/5V
• Package Type: SOIC
• Operating Temp Range: -40C to 85C
• Supply Current: 1mA
• 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: Not Compliant

Description
1
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Description
The M24C32, M24C64 and M24128 devices are I
programmable memories (EEPROM). They are organized as 4096 × 8 bits, 8192 × 8 bits
and 16384 × 8 bits, respectively.
Figure 1.
I
devices carry a built-in 4-bit Device Type Identifier code (1010) in accordance with the I
bus definition.
The device behaves as a slave in the I
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 Read/Write
bit (RW) (as described in
When writing data to the memory, the device inserts an acknowledge bit during the 9
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 after a NoAck for Read.
2
C uses a two-wire serial interface, comprising a bidirectional data line and a clock line. The
Logic diagram
Table
E0-E2
SCL
WC
3), terminated by an acknowledge bit.
3
2
C protocol, with all memory operations synchronized
V CC
V SS
M24C64
M24C32
M24128
2
C-compatible electrically erasable
AI01844e
SDA
M24128, M24C64, M24C32
th
bit
2
C