R1EX24064AxxS0A

Page Write:

The EEPROM is capable of the page write operation which allows any number of bytes up to 32 bytes to

be written in a single write cycle. The page write is the same sequence as the byte write except for

inputting the more write data. The page write is initiated by a start condition, device address word,

memory address(n) and write data (Dn) with every ninth bit acknowledgment. The EEPROM enters the

page write operation if the EEPROM receives more write data (Dn+1) instead of receiving a stop

condition. The a0 to a4 address bits are automatically incremented upon receiving write data (Dn+1).

The EEPROM can continue to receive write data up to 32 bytes. If the a0 to a4 address bits reaches the

last address of the page, the a0 to a4 address bits will roll over to the first address of the same page and

previous write data will be overwritten. Upon receiving a stop condition, the EEPROM stops receiving

write data and enters internally-timed write cycle.

Page Write Operation

Note:

1. Don't care bit

Device

address

1st Memory

address (n)

2nd Memory

address (n)

Write data (n+m)

Write data (n)

64k

10 10

W

Stop

Start

ACK

ACK

ACK

ACK

ACK

R/W

WP

REJ03C0332-0200 Rev.2.00 Oct. 26, 2009

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