TMP006

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SBOS518A

– MAY 2011 – REVISED JULY 2011

MANUFACTURER AND DEVICE ID REGISTERS

The TMP006 has two registers for identification: manufacturer ID (pointer address FEh) and device ID (pointer

address FFh). The manufacturer ID reads 5449h and the device ID is 0060h. Table 10 summarizes these two

values.

Table 10. Manufacturer and Device ID (Read-Only)

POINTER

REGISTER

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

(HEX)

Manufacturer ID

ID15

ID14

ID13

ID12

ID11

ID10

ID9

ID8

ID7

ID6

ID5

ID4

ID3

ID2

ID1

ID0

FEh

Reset value

0

1

0

1

0

1

0

0

0

1

0

0

1

0

0

1

Device ID

ID15

ID14

ID13

ID12

ID11

ID10

ID9

ID8

ID7

ID6

ID5

ID4

ID3

ID2

ID1

ID0

FFh

Reset value

0

0

0

0

0

0

0

0

0

1

1

0

0

0

0

0

SERIAL INTERFACE

The TMP006 operates only as a slave device on either the two-wire bus or the SMBus interface. Connections to

either bus are made via the open-drain I/O lines, SDA, and SCL. The SDA and SCL pins feature integrated

spike-suppression filters and Schmitt triggers to minimize the effects of input spikes and bus noise. The TMP006

supports the transmission protocol for fast (1 kHz to 400 kHz) and high-speed (1 kHz to 3.4 MHz) modes. All

data bytes are transmitted MSB first.

SERIAL BUS ADDRESS

To communicate with the TMP006, 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 that indicate the intent to execute a read or

write operation.

READ/WRITE OPERATIONS

Accessing a particular register on the TMP006 is accomplished by writing the appropriate value to the Pointer

Register. The pointer value is the first byte transferred after the slave address byte with the R/W bit low. Every

write operation to the TMP006 requires a value for the pointer (see Figure 7). When reading from the TMP006,

the last value stored in the pointer by a write operation is used to determine which register is read by a read

operation. To change the register pointer for a read operation, a new value must be written to the pointer. This

transaction is accomplished by issuing a slave address byte with the R/W bit low, followed by the pointer byte.

No additional data are required. The master can then generate a START condition and send the slave address

byte with the R/W bit high to initiate the read command. If repeated reads from the same register are desired, it

is not necessary to continually send the pointer bytes because the TMP006 retains the pointer value until it is

changed by the next write operation. Note that register bytes are sent MSB first, followed by the LSB.

Copyright

© 2011, Texas Instruments Incorporated

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