TMP108 datasheet(16/19 Pages) TI

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Frame 1 SMBus ALERT Response Address Byte

Frame 2 Slave Address From Device

Start By

Master

ACK By

Device

From

Device

NACK By

Master

Stop By

Master

SDA

SCL

ALERT

R/W

Status

(1)

Frame 1 Two-Wire Slave Address Byte

Frame 2 Pointer Register Byte

Start By

Master

ACK By

Device

ACK By

Device

Frame 3 Two-Wire Slave Address Byte

Frame 4 Data Byte 1 Read Register

Start By

Master

ACK By

Device

ACK By

Master

(2)

From

Device

SDA

SCL

R/W

SDA

(Continued)

SCL

(Continued)

SDA

(Continued)

SCL

(Continued)

(1)

R/W

Frame 5 Data Byte 2 Read Register

Stop By

Master

ACK By

Master

(3)

From

Device

Stop By

Master

TMP108

SBOS663 – APRIL 2013

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(1)

The value of A0 and A1 are determined by the A0 pin.

(2)

Master should leave SDA high to terminate a single-byte read operation.

(3)

Master should leave SDA high to terminate a two-byte read operation.

Figure 14. Two-Wire Timing Diagram for Read Word Format

(1)

The value of A0 and A1 are determined by the A0 pin.

Figure 15. Timing Diagram for SMBus Alert

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