AK9753 Datasheet, PDF (5/50 Pages) Asahi Kasei Microsystems – IR Sensor IC with I2C I/F

[AK9753]
5. Pin Configurations and Functions
5.1. Pin Configurations
VDD 1
CAD0 2
CAD1 3
INT
4
PDN 5
10 VSS
9 _TEST
8 _DVDD
7 SCL
6 SDA
5.2. Pin Functions
Top View
Figure 5.1 Pin Configurations
Table 5.1 Pin Functions
Pin
No.
Name
I/O
Function
1 VDD - Analog Power Supply Pin
2
CAD0
I
Slave address 0. CAD0 pin should be connected to VDD or VSS. Set up an address so
that two or more same address of devices do not exist on the same bus.
3
CAD1
I
Slave address 1. CAD0 pin should be connected to VDD or VSS. Set up an address so
that two or more same address of devices do not exist on the same bus.
Functions are selected by INTEN register. INT pin goes “Active”, when the ADC output
are ready to be read or the differential signal of two IR sensor(one observes the upper
4
INT
O
(or left)side and another observes lower (or right) side) exceeds threshold levels. It is
composed of an open drain output (N-type transistor). INT pin is connected to DVDD
voltage through a pull-up resister, with other open drain or open collector output of the
other devices to form “wired-OR”.
Power down pin. When PDN pin= “H”, AK9753 can operate. PDN pin is not connected
5 PDN I to VDD (or VSS) through a pull-up (or pull-down) resister. This pin must be connected
to “H” or “L” voltage level.
I²C Data Output Pin. SDA is a bidirectional pin which is used to transmit data into and
6
SDA
I/O
out of the device. It is composed of a signal input and an open drain output (N-type
transistor). SDA is connected to DVDD voltage through a pull-up resistor, and to open
drain outputs or open collector outputs of the other devices as “wired-OR”
I²C Clock Input pin. Signal processing is executed at the rising and falling edge of SCL
7 SCL I clock. Observe rise time tR and fall time tF. SCL is connected to DVDD voltage through
a pull-up resistor.
8 DVDD - Digital I/F Power Supply pin.
9 TEST I Test pin. TEST pin should be connected to VSS.
10 VSS - Ground pin.
017005237-E-00
-5-
2017/04