Datasheet
AD7414/AD7415
Rev. F | Page 11 of 20
02463-010
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
ADDRESS POINTER REGISTER BYTE
1
SCL
S
D
A
1
A2
A1
A0
P7
P6
P5
P4
P3
P2
P1
P0
ACK. BY
AD7414/AD7415
STOP BY
MASTER
START BY
MASTER
1
ACK. BY
AD7414/AD7415
9
1
9
0
0
R/W
Figure 10. Writing to the Address Pointer Register to Select a Register for a Subsequent Read Operation
FRAME 3
DATA BYTE
D7
D6
D5
D4
D3
D2
D1
D0
ACK. BY
AD7414/AD7415
STOP BY
MASTER
SCL (CONTINUED)
SDA (CONTINUED)
1
SCL
SDA
1
A2
A1
A0
P7
P6
P5
P4
P3
P2
P1 P0
ACK. BY
AD7414/AD7415
START B
Y
MASTER
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
ADDRESS POINTER REGISTER BYTE
ACK. BY
AD7414/AD7415
9
191
11
•••
•••
•••
•••
91
02463-011
R/W
Figure 11. Writing to the Address Pointer Register Followed by a Single Byte of Data to the Selected Register
SDA
NO ACK. BY
MASTER
START BY
MASTER
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
SINGLE DATA BYTE FROM AD7414/AD7415
ACK. BY
AD7414/AD7415
D7 D6 D5 D4 D3 D2 D1 D0A0A1A210
1
SCL
STOP BY
MASTER
0
R/W
02463-012
Figure 12. Reading a Single Byte of Data from a Selected Register
D7
D6
D5
D4
D3
D2
D1
D0
NO ACK. BY
MASTER
STOP BY
MASTER
FRAME 3
LEAST SIGNIFICANT DATA BYTE FROM AD7414/AD7415
SCL (CONTINUED)
SDA (CONTINUED)
1
SCL
SDA
1
A2
A1
A0
D15
D14
D13
D12
D10
D11
D9 D8
ACK. BY
MASTER
START BY
MASTER
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
MOST SIGNIFICANT DATA BYTE FROM AD7414/AD7415
ACK. BY
AD7414/AD7415
1
9
•••
•••
•••
•••
1
9
0
0
1
9
02463-013
R/W
Figure 13. Reading Two Bytes of Data from the Temperature Value Register