I am using PCA9633 with external driver, but the default output of the LEDn pin is high level . so when the chip power on, the external driver is on and the led is on. but not what i my expected. Can the chip output low level in the external mode when it power on?
default output of LEDn is VDD:
Hi,
Sorry about the delayed response.
Yes, the LED output pin is always high when power is up in default value, the only solution is programming either INVRT (bit4) = 1, or OUTDRV (bit2) = 0 after power up, other option is to add an external invertor on the LED output pin.
Regards,
Tomas
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