AT30TS01 [DATASHEET]

Atmel-8952A-DTS-AT30TS01-Datasheet_122015

10

5.

Device Addressing

The AT30TS01 requires a 7-bit device address and a Read/Write select bit following a Start condition from the

Master to initiate communication with either the temperature sensor. The device address byte is comprised of a

4-bit device type identifier followed by three device address bits (A2, A1,and A0) and a R/W bit and is clocked by

the Master on the SDA pin with the Most Significant bit first. The AT30TS01 responds to a unique device type

identifier of 0011b and is necessary to select the device for reading or writing. See the table below.

Table 5-1.

AT30TS01 Device Address Byte

The software device address bits (A2, A1, and A0) must match their corresponding hard-wired device address

bit of the address byte is the R/W operation selection bit. A Read operation is selected if this bit is a Logic 1, and

upon a compare of the device address byte, the AT30TS01 outputs an ACK during the ninth clock cycle. If a

compare is not true, the device outputs a NACK during the ninth clock cycle and returns the device to the low-

power Standby Mode.

Table 5-2.

Device Address Combinations

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Function

Device Type Identifier

Device Address

Read/Write

Temperature Sensor

0

0

1

1

A2

A1

A0

R/W

Software Device Address Bits

Hard-wired Device Address Inputs

A2, A1, A0

0 0 0

GND

GND

GND

0 0 1

GND

GND

0 1 0

GND

GND

0 1 1

GND

1 0 0

GND

GND

1 0 1

GND

1 1 0

GND

1 1 1