s-24c02ci-t8t1u Seiko Instruments Inc., s-24c02ci-t8t1u Datasheet - Page 12

• Manufacturer Part Number: s-24c02ci-t8t1u
• Description: 2-wire Cmos Serial E2prom
• Manufacturer: Seiko Instruments Inc.

12
2-WIRE CMOS SERIAL E
S-24C01C/02C
5. Device Addressing
To start communication, the master device on the system generates a start condition to the bus line. Next, the
master device sends 7-bit device address and a 1-bit read / write instruction code on to the SDA bus.
The higher 4 bits of the device address are the “Device Code”, and are fixed to “1010”.
In the S-24C01C/02C, successive 3 bits are the “Slave Address”. These 3 bits are used to identify a device on the
system bus and are compared with the predetermined value which is defined by the address input pins (A2, A1, A0).
When the comparison result matches, the slave device responds with an acknowledge during the 9th clock cycle.
S-24C01C/02C
2
MSB
PROM
1
Device Code
Figure 13 Device Address
0
Seiko Instruments Inc.
1
0
A2
Address
Slave
A1
A0
R / W
LSB
Rev.2.0
_00_C