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M24C64P-FCU

Device operation

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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 3 (on Serial Data (SDA), most significant bit 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, the device deselects itself from the bus,

and goes into Standby mode (therefore will not acknowledge the device select code).

Table 3. Device select code

Device type identifier(1)

1. The most significant bit, b7, is sent first.

Chip Enable address

RW

b7

b6

b5

b4

b3

b2

b1

b0

101

0011

RW