AK9720 Datasheet, PDF (4/31 Pages) Asahi Kasei Microsystems – IR Sensor Module with I2C I/F

[AK9720]
Pin/Locations
TOUT 1
VDD 2
CAD0 3
CAD1 4
INT 5
10 VSS
9 SOUT
8 DVDD
7 SCL
6 SDA
Pin/Functions
Pin
Name I/O
Function
No.
Integrated Temperature Sensor Analog Output
1
TOUT
O LPF can be formed by the output resistance and an external
capacitor.
2
VDD
- Analog Power Supply Pin
Slave address 0
CAD should be connected to DVDD or Vss.
3
CAD0
I
Set up an address so that two or more same addresses of
devices do not exist on the same bus.
Slave address 1
CAD should be connected to DVDD or Vss.
4
CAD1
I
Set up an address so that two or more same addresses of
devices do not exist on the same bus.
Interrupt output ( “H” active)
Function is selected by the interrupt pin select register
5
INT
O (INTEN).
INT is High level, when read-out is ready or a target
temperature is over upper limit or lower limit.
I2C Data Output Pin
SDA is a bidirectional pin which is used to transmit data into
and out of the device. It is composed of a signal input and a
6
SDA
I/O _{open drain output (N-type transistor).}
SDA is connected to the DVDD voltage through a pull-up
resistance, and to open drain outputs or open collector outputs
of the other devices as “wire-ORed”.
Rev.02
AKM Confidential
-4-
2012/11