These I2C-compatible electrically erasable programmable memory (EEPROM) devices are organized 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 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 inserts 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 after a NoAck for READ.
