TMP175-Q1, TMP75-Q1

SBOS759 – NOVEMBER 2015

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7.3.2.2 Serial Bus Address

To communicate with the TMP175-Q1 and TMP75-Q1, the master must first address slave devices through a

slave address byte. The slave address byte consists of seven address bits and a direction bit indicating the intent

of executing a read or write operation.

The TMP175-Q1 features three address pins to allow up to 27 devices to be addressed on a single bus interface.

Table 2 describes the pin logic levels used to properly connect up to 27 devices. A 1 indicates that the pin is

connected to the supply (VCC) and a 0 indicates that the pin is connected to GND; float indicates that the pin is

left unconnected. The state of the A0, A1, and A2 pins is sampled on every bus communication and must be set

prior to any activity on the interface.

Table 2. Address Pins and Slave Addresses for the TMP175-Q1

A2

A1

A0

SLAVE ADDRESS

0

0

0

1001000

0

0

1

1001001

0

1

0

1001010

0

1

1

1001011

1

0

0

1001100

1

0

1

1001101

1

1

0

1001110

1

1

1

1001111

Float

0

0

1110000

Float

0

Float

1110001

Float

0

1

1110010

Float

1

0

1110011

Float

1

Float

1110100

Float

1

1

1110101

Float

Float

0

1110110

Float

Float

1

1110111

0

Float

0

0101000

0

Float

1

0101001

1

Float

0

0101010

1

Float

1

0101011

0

0

Float

0101100

0

1

Float

0101101

1

0

Float

0101110

1

1

Float

0101111

0

Float

Float

0110101

1

Float

Float

0110110

Float

Float

Float

0110111

10

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