R1EX24016ASAS0G Datasheet, PDF (10/18 Pages) Renesas Technology Corp – Two-wire serial interface 16k EEPROM

R1EX24016ASAS0G/R1EX24016ATAS0G
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 16kbit EEPROM receives 8-bit memory address words.
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
16k
Start
Device
address
1010
Memory
address (n)
Write data (n)
W
ACK
R/W
ACK
No ACK
Stop
Page Write:
The page write is the same sequence as the byte write. The page write is initiated by a start condition, device address
word and memory address(n) with every ninth bit acknowledgment"0". But after inputting write data(Dn) , the
EEPROM outputs acknowledgment "1"(NO ACK). Then the EEPROM write operations are not allowed.
Page Write Operation
WP
16k
Start
Device
address
1010
Memory
address (n)
W
ACK
R/W
No ACK
No ACK
Write data (n) Write data (n+m)
ACK
Stop
R10DS0032EJ0200 Rev.2.00
Feb. 13, 2013
Page 10 of 16