®
LY24C02/04/08/16
2K/4K/8K/16K-bit 2-Wire Serial EEPROM
Preliminary. 0.4
BYTE WRITE OPERATION
In a complete byte write operation, the master transmits the slave address, word address, and one data byte
to the LY24C02/04/08/16 slave device
Note: Byte write operation
Following the Start condition, the master sends the device identifier (4 bits), the device address (3 bits), and
an R/W bit set to “0” onto the bus. Then the addressed LY24C02/04/08/16 generates an ACK and waits for the
next byte. The next byte to be transmitted by the master is the word address. This 8-bit address is written into
the word address pointer of the LY24C02/04/08/16
When the LY24C02/04/08/16 receives the word address, it responds by issuing an ACK and then waits for the
next 8-bit data. When it receives the data byte, the LY24C02/04/08/16 again responds with an ACK. The
master terminates the transfer by generating a Stop condition, at which time the LY24C02/04/08/16 begins
the internal write cycle.
While the internal write cycle is in progress, all LY24C02/04/08/16 inputs are disabled and the
LY24C02/04/08/16 does not respond to additional requests from the master.
PAGE WRITE OPERATION
The LY24C02/04/08/16 can also perform 16-byte page write operation. A page write operation is initiated in
the same way as a byte write operation. However, instead of finishing the write operation after the first data
byte is transferred, the master can transmit up to 15 additional bytes. The LY24C02/04/08/16 responds with
an ACK each time it receives a complete byte of data.
Note: Page write operation
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