资料介绍
用GPIO扩展LED调光 NXP 2/4/8/16-bit
I2C/SMBus LED dimmers
PCA9530/31/32/33
LED dimming with GPIO expansion
These I2C/SMBus-compatible GPIO expanders, optimized for dimming LEDs, support two user-
programmable blink and dimming rates, programmable up to 256 levels of brightness, without
overloading the I2C-bus or tying up the I2C-bus master.
Key features Applications
4 Compatible with I2C-bus and SMBus 4 LED backlighting
4 Two user-programmable blink rates and duty cycles 4 LED color mixing
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