TMP100−EP, TMP101−EP

DIGITAL TEMPERATURE SENSOR

SGLS254A − JULY 2005 - REVISED APRIL 2010

10

POST OFFICE BOX 655303

APPLICATION INFORMATION

serial interface

are made via the open-drain I/O lines SDA and SCL. The TMP100 and TMP101 support the transmission

protocol for fast (up to 400 kHz) and high-speed (up to 3.4 MHz) modes. All data bytes are transmitted most

significant bit first.

serial bus address

To program the TMP100 and TMP101, the master must first address slave devices via 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.

Table 11 describes the pin logic levels used to properly connect up to eight devices. Float indicates the pin is

be set prior to any activity on the interface.

ADD1

ADD0

SLAVE ADDRESS

0

0

1001000

0

Float

1001001

0

1

1001010

1

0

1001100

1

Float

1001101

1

1

1001110

Float

0

1001011

Float

1

1001111

Table 11. Address Pins and Slave Addresses for TMP100

The TMP101 features one address pin and an ALERT pin, allowing up to three devices to be connected per

bus. Pin logic levels are described in Table 12. The address pins of the TMP100 and TMP101 are read after

to minimize power dissipation associated with detection.

ADD0

SLAVE ADDRESS

0

1001000

Float

1001001

1

1001010

Table 12. Address Pins and Slave Addresses for TMP101