AD7416/AD7417/AD7418

Rev. I | Page 15 of 24

written to the selected data register. This is illustrated in

Figure 16.

•

setpoint register.

If 9-bit resolution is required for the temperature setpoints,

address, the register address written to the address pointer

register, followed by two data bytes written to the selected

data register. This is illustrated in Figure 17.

SCL

1

1

9

9

SDA

1

001

START BY

MASTER

ACK. BY

ACK. BY

STOP

BY

MASTER

FRAME 2

ADDRESS POINTER REGISTER BYTE

FRAME 1

SERIAL BUS ADDRESS BYTE

A2

A1

P7

P6

P5

P4

P3

P2

P1

P0

A0

R/W

Figure 15. Writing to the Address Pointer Register to Select a Data Register for a Subsequent Read Operation

SCL

1

1

1

9

9

9

SDA

1

0

0

1

START BY

MASTER

ACK. BY

ACK. BY

ACK. BY

STOP

BY

MASTER

FRAME 2

ADDRESS POINTER REGISTER BYTE

FRAME 3

DATA BYTE

FRAME 1

SERIAL BUS ADDRESS BYTE

SCL (CONTINUED)

SDA (CONTINUED)

A2

A1

P7

P6

P5

P4

P3

P2

P1

P0

D6

D7

D5

D4

D3

D2

D1

D0

A0

R/W

Figure 16. Writing to the Address Pointer Register Followed by a Single Byte of Data to the Selected Data Register

SCL

SCL

(CONTINUED)

SDA

(CONTINUED)

11

9

1

19

9

SDA

1

0

0

1

START BY

MASTER

ACK. BY

ACK. BY

ACK. BY

STOP BY

MASTER

ACK. BY

STOP

BY

MASTER

FRAME 2

ADDRESS POINTER REGISTER BYTE

FRAME 1

SERIAL BUS ADDRESS BYTE

A2

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

A1

P7

P6

P5

P4

P3

P2

P1

P0

A0

R/W

9

FRAME 3

MOST SIGNIFICANT DATA BYTE

FRAME 4

LEAST SIGNIFICANT DATA BYTE