Data Sheet

5/40
Part No. : LTR-559ALS-01
BNS-OD-FC002/A4
Optical Sensor
LTR-559ALS-01
I/O Pins Configuration Table
Pin
I/O Type
Symbol
Description
1
I/O
SDA
I
2
C serial data. This pin is an open drain input / output.
2
O
INT
Level Interrupt Pin. This pin is an open drain output.
3
I
LDR
LED Driver for proximity emitter. This pin is an open drain input.
4
O
LED K
LED Cathode. Connect to LDR pin if using internal LED driver circuit.
5
I
LED A
LED Anode. Connect to VDD or VBAT on PCB
6
GND
Ground
7
I
SCL
I
2
C serial clock. This pin is an open drain input.
8
VDD
Power Supply Voltage
Recommended Application Circuit Components
Component
Recommended Value
Rp1, Rp2, Rp3 [1]
1 k to 10 k
C1, C2
1uF 20%, X7R Ceramic
[1] Selection of pull-up resistors value is dependent on bus capacitance values. For more details, please
refer to I
2
C Specifications: http://www.nxp.com/documents/user_manual/UM10204.pdf