s-24c02bpphl Seiko Instruments Inc., s-24c02bpphl Datasheet - Page 11

• Manufacturer Part Number: s-24c02bpphl
• Description: 2-wire Cmos Serial E2prom
• Manufacturer: Seiko Instruments Inc.

5. Device addressing
Rev.2.2
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.
_00
S-24C02BPPHL
MSB
Remark X: Don’t care
1
Figure 9 Device Address
Device code
0
Seiko Instruments Inc.
1
0
X
2-WIRE CMOS SERIAL E
Don’t care
X
X
R / W
S-24C02BPPHL
LSB
2
PROM
11