S-24C02BPPHL Datasheet, PDF (11/39 Pages) Seiko Instruments Inc – 2-WIRE CMOS SERIAL E2PROM

Rev.2.2_00
2-WIRE CMOS SERIAL E²PROM
S-24C02BPPHL
5. Device addressing
To perform data communications, the master device mounted on the system outputs the start condition signal
to the slave device. Next, the master device outputs a 7-bit device address and a 1-bit read/write instruction
code onto the SDA bus.
The higher 4 bits of the device address are called the “Device Code”, and are fixed to “1010”. The following 3
bits are “don’t care” bits.
When the comparison results match, the slave device outputs the acknowledge signal during the 9th clock
cycle.
Device code
Don’t care
S-24C02BPPHL 1
0
1
0
X
X
X R/W
MSB
LSB
Remark X: Don’t care
Figure 9 Device Address
Seiko Instruments Inc.
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