AD5116 datasheet(21/28 Pages) AD

21 / 28 page

Data Sheet

AD5110/AD5112/AD5114

Rev. 0 | Page 21 of 28

WRITE OPERATION

When writing to the AD5110/AD5112/AD5114, the user

must begin with a start command followed by an address

byte (R/W = 0), after which the AD5110/AD5112/AD5114

acknowledge that it is prepared to receive data by pulling

SDA low.

Two bytes of data are then written to the DAC, the most

significant byte, followed by the least significant byte. Both of

these data bytes are acknowledged by the AD5110/AD5112/

AD5114. A stop condition follows. The write operations for

the AD5110/AD5112/AD5114 are shown in Figure 41,

Figure 42, and Figure 43.

A repeated write function gives the user flexibility to update

the device a number of times after addressing the part only

once, as shown in Figure 44.

SCL

SDA

START BY

MASTER

ACK. BY

AD5110

ACK. BY

AD5110

FRAME 1

SERIAL BUS ADDRESS BYTE

FRAME 2

MOST SIGNIFICANT DATA BYTE

FRAME 3

LEAST SIGNIFICANT DATA BYTE

SCL (CONTINUED)

SDA (CONTINUED)

ACK. BY

AD5110

STOP BY

MASTER

R/W

Figure 41. AD5110 Interface Write Command

SCL

SDA

START BY

MASTER

ACK. BY

AD5112

ACK. BY

AD5112

FRAME 1

SERIAL BUS ADDRESS BYTE

FRAME 2

MOST SIGNIFICANT DATA BYTE

FRAME 3

LEAST SIGNIFICANT DATA BYTE

SCL (CONTINUED)

SDA (CONTINUED)

ACK. BY

AD5112

STOP BY

MASTER

R/W

Figure 42. AD5112 Interface Write Command

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