R1EX24008ASA00A Datasheet, PDF (16/22 Pages) Renesas Technology Corp – Two-wire serial interface 8k EEPROM (1-kword × 8-bit)

R1EX24008Axx00A
Random Read:
This is a read operation with defined read address. A random read requires a dummy write to set read
address. The EEPROM receives a start condition, device address word (R/W=0) and memory address 2 ×
8-bit sequentially. The EEPROM outputs acknowledgment “0” after receiving memory address then
enters a current address read with receiving a start condition. The EEPROM outputs the read data of the
address which was defined in the dummy write operation. After receiving acknowledgment “1”(no
acknowledgment) and a following stop condition, the EEPROM stops the random read operation and
returns to a standby state.
Random Read Operation
8k
Start
Device
address
@
1 0 10
Memory
address (n)
W
ACK
R/W
Dummy write
Device
address
#
1010
R
Start ^R/W
ACK
ACK
Read data (n)
No ACK
Stop
Currect address read
Notes: 1. Don't care bit
2. 2nd device address code(#)should be same as 1st(@).
REJ03C0351-0001 Rev.0.01 Dec. 28, 2007
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