ETC
CH423 - Two-wire remote I / O expansion chip
CH423
1
I/O CH423
: 2 http://wch.cn
1、
CH423 I/O 。CH423 8 16 ,;CH423 , 24 LED 128 LED( 16 ) ;CH423 2 。 SCL MCU SDA CH423 I/O () OC
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