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PCA9685PW Datasheet(PDF) 4 Page - NXP Semiconductors |
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PCA9685PW Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 51 page PCA9685 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 3 — 2 September 2010 4 of 51 NXP Semiconductors PCA9685 16-channel, 12-bit PWM Fm+ I2C-bus LED controller 5. Block diagram Remark: Only one LED output shown for clarity. Fig 1. Block diagram of PCA9685 A0 A1 A2 A3 A4 A5 002aac824 I2C-BUS CONTROL INPUT FILTER PCA9685 POWER-ON RESET SCL SDA VDD VSS LED STATE SELECT REGISTER PWM REGISTER X BRIGHTNESS CONTROL MUX/ CONTROL OE '0' – permanently OFF '1' – permanently ON VDD LEDn PRESCALE 25 MHz OSCILLATOR CLOCK SWITCH EXTCLK |
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