ADT7420 Analog Devices, ADT7420 Datasheet - Page 20

• Manufacturer Part Number: ADT7420
• Description: 16-Bit Digital I2C Temperature Sensor
• Manufacturer: Analog Devices

ADT7420
SDA
SDA
1. A START CONDITION AT THE BEGINNING IS DEFINED AS A HIGH-TO-LOW TRANSITION ON SDA WHILE SCL REMAINS HIGH.
2. A STOP CONDITION AT THE END IS DEFINED AS A LOW-TO-HIGH TRANSITION ON SDA WHILE SCL REMAINS HIGH.
3. THE MASTER GENERATES THE NO ACKNOWLEDGE AT THE END OF THE READBACK TO SIGNAL THAT IT DOES NOT WANT ADDITIONAL DATA.
4. TEMPERATURE VALUE REGISTER MSB DATA AND TEMPERATURE VALIUE REGISTER LSB DATA ARE ALWAYS SEPARATED BY A LOW ACK BIT.
5. THE R/W BIT IS SET TO A1 TO INDICATE A READBACK OPERATION.
SCL
SCL
NOTES
REPEAT
START
START
SR
1
1
ADT7410 DEVICE ADDRESS
1
1
0
ADT7410 DEVICE ADDRESS
0
0
A1
1
Figure 17. Reading Back Data from the Temperature Value Register
A0
0
R/W
A1
ADT7420
ACK. BY
A0
R/W
D7
Rev. PrA | Page 20 of 2
ADT7420
ACK. BY
D6
VALUE REGISTER
TEMPERATURE
9
9
MSB DATA
A7
REGISTER ADDRESS[A7:A0]
1
A6
D1
1
D0
ACK. BY
MASTER
A1
D7
A0
Preliminary Technical Data
ADT7420
ACK. BY
D6
VALUE REGISTER
TEMPERATURE
9
LSB DATA
D1
D0
www.DataSheet4U.com
MASTER
ACK. BY
NO
9