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PCA9632 very simple operation sample. PCA9632 is 4 channel LED controller from NXP semiconductors.
Simple sample code for PCA9632 : 4-bit Fm+ I2C-bus low power LED driver
This is a simple operation sample code for PCA9632.
The PCA9632 is an I2C-bus controlled 4-bit LED driver optimized for Red/Green/Blue/Amber (RGBA) color mixing applications. The PCA9632 is a drop-in upgrade for the PCA9633 with 40 power reduction. In Individual brightness control mode, each LED output has its own 8-bit resolution (256 steps) fixed frequency Individual PWM controller that operates at 1.5625 kHz with a duty cycle that is adjustable from 0 % to 99.6 % to allow the LED to be set to a specific brightness value. In group dimming mode, each LED output has its own 6-bit resolution (64 steps) fixed frequency Individual PWM controller that operates at 6.25 kHz with a duty cycle that is adjustable from 0 % to 98.4 % to allow the LED to be set to a specific brightness value. A fifth 4-bit resolution (16 steps) Group PWM controller has a fixed frequency of 190 Hz that is used to dim all the LEDs with the same value.
For more details, please refer.. http:www.nxp.com/documents/data_sheet/PCA9632.pdf.
If you have an evaluation board for PCA9632, please find next picture for wiring.
The evaluation board OM13269's information is available in http:www.nxp.com/documents/user_manual/UM10528.pdf.