PCA9685BS,118 datasheet by NXP Semiconductors

PCA9685BS,118 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the PWM output?
  The maximum frequency of the PWM output is 1526 Hz, but it can be adjusted using the PRESCALE register.
• How do I configure the PCA9685 for 16-bit PWM mode?
  To configure the PCA9685 for 16-bit PWM mode, set the MODE1 register to 0x01 and the MODE2 register to 0x04. Then, set the LEDx_ON_L and LEDx_ON_H registers to define the 16-bit PWM value.
• What is the purpose of the OE (Output Enable) pin?
  The OE pin is an active-low input that enables or disables the output drivers. When OE is low, the output drivers are enabled, and when OE is high, the output drivers are disabled.
• How do I reset the PCA9685?
  The PCA9685 can be reset by setting the SLEEP bit in the MODE1 register to 1. This will reset the device and clear all registers.
• What is the maximum current rating of the output drivers?
  The maximum current rating of the output drivers is 25 mA per channel.