R1EX24016ASAS0G Datasheet, PDF (8/18 Pages) Renesas Technology Corp – Two-wire serial interface 16k EEPROM

R1EX24016ASAS0G/R1EX24016ATAS0G
Device Addressing
The EEPROM device requires an 8-bit device address word following a start condition to enable the chip for a read or a
write operation. The device address word consists of 4-bit device code, 3-bit device address code and 1-bit
read/write(R/W) code. The most significant 4-bit of the device address word are used to distinguish device type and
this EEPROM uses “1010” fixed code. The device address code is followed by the 3-bit memory address in the order
of a10, a9, a8.
The eighth bit of the device address word is the read/write(R/W) bit. A write operation is initiated if this bit is low and
a read operation is initiated if this bit is high.
The EEPROM turns to a stand-by state if the device code is not “1010” or device address code doesn’t coincide with
status of the correspond hard-wired device address pins A0 to A2.
Device Address Word
Device address word (8-bit)
Device code (fixed)
Device address code
16k
1
0
1
0
a10
a9
a8
Note: 1. R/W=“1” is read and R/W = “0” is write.
R/W code*¹
R/W
R10DS0032EJ0200 Rev.2.00
Feb. 13, 2013
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