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R1EX24002AxxS0A
Write Operations (WP =High )
Byte Write: (Write operation during WP =High status )
A write operation requires an 8-bit device address word with R/W = “0”. Then the EEPROM sends
acknowledgment "0" at the ninth clock cycle. After these, the 2k bit EEPROM receives 8-bit memory
address. Upon receipt of this memory address, the EEPROM outputs acknowledgment "0". After receipt
of 8-bit write data, the EEPROM outputs acknowledgment "1" (NO ACK) . Then the EEPROM write
operations are not allowed.
Byte Write Operation
WP
2k
Start
Device
address
1010
W
Memory
address
ACK
R/W
ACK
Write data (n)
No ACK
Stop
REJ03C0354-0101 Rev.1.01 Jan. 9, 2009
Page 14 of 22
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