STMPE1600

Doc ID 16938 Rev 3

7/27

For the bus master to communicate to the slave device, the bus master must initiate a Start

condition and followed by the slave device address. Accompanying the slave device

address, there is a Read/Write bit (R/W). The bit is set to 1 for Read and 0 for write

operation.

If a match occurs on the slave device address, the corresponding device gives an

acknowledge on the SDA during the 9th bit time. If there is no match, it deselects itself from

the bus by not responding to the transaction.

Figure 4.

Table 3.

Eight programmable slave addresses

A2

A1

A0

Slave device address

(7-bit or 10-bit

addressing)

0

0

0

42h

0

0

1

43h

0

1

0

44h

0

1

1

45h

1

0

1

46h

1

0

1

47h

1

1

0

48h

1

1

1

49h