Device operation
M24C01/02-W M24C01/02-R M24C02-F
4.5
Device addressing
To start communication between the bus master and the slave device, the bus master must
initiate a Start condition. Following this, the bus master sends the device select code, shown
in Table 2 (on Serial Data (SDA), most significant bit first).
Table 2. Device select code
Device type identifier(1)
Chip Enable address
RW
b7
b6
b5
b4
b3
b2
b1
b0
1
0
1
0
E2
E1
E0
RW
1. The most significant bit, b7, is sent first.
The 8th bit is the Read/Write bit (RW). This bit is set to 1 for Read and 0 for Write operations.
If a match occurs on the device select code, the corresponding device gives an
acknowledgment on Serial Data (SDA) during the 9th bit time. If the device does not match
the device select code, it deselects itself from the bus, and goes into Standby mode.
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