AK9752 Datasheet, PDF (5/36 Pages) Asahi Kasei Microsystems – Ultra-small IR sensor IC with IC

[AK9752]
5. Pin Configurations and Functions
5.1. Pin Configurations
IR receiving surface
VSS 1
6 SCL
SCL 6
1 VSS
VDD2 ²
VDD1 ³
5 SDA
4 INTN
SDA 5
INTN 4
2 _VDD2
3 _VDD1
Top View
Bottom View
Exposed pad
Note: Exposed pad internally connects to VSS pin.
Figure 5.1 Pin Configurations
5.2. Functions
Pin
No.
Name
I/O
1 VSS -
2 VDD2 -
3 VDD1 -
4 INTN O
5 SDA I/O
6 SCL I
Table 5.1 Functions
Function
Ground Pin.
Power Supply Pin.
Connect together with VDD1 line on a board. (VDD2=VDD1=VDD)
Power Supply Pin.
Connect together with VDD2 line on a board. (VDD1=VDD2=VDD)
Interrupt Pin.
It goes to “L” in the following cases.
(1) ADC output is ready to be read.
(2) IR output or Temperature Sensor output exceeds the specified threshold levels.
INTN pin is an open drain output (N-type transistor), and connected to a power line of
1.65V ~ 3.63V through a pull-up resistor.
I²C Data In/Output Pin.
A bidirectional pin which is used to transmit data into and out of the device. It is
composed of a signal input and an open drain output (N-type transistor). SDA pin is
connected to the following power line through a pull-up resistor.
VDD ~ 3.63V at Standard mode (100kHz)
VDD ~ 1.95V at Fast mode (400kHz)
Refer to the note in “17. Recommended External Circuits”
I²C Clock Input Pin.
Signal processing is executed at the rising and falling edge of SCL clock. SCL pin is
connected to the following power line through a pull-up resistor.
VDD ~ 3.63V at Standard mode (100kHz)
VDD ~ 1.95V at Fast mode (400kHz)
Refer to the note in “17. Recommended External Circuits”
016016473-E-00
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2017/1