Introduction - If you have any usage issues, please Google them yourself
I2C Bus Driver (using two ordinary analog IO I2C Bus) include 100Khz (T = 10us) standard mode (slow mode) choice, and 400Khz (T = 2.5us) Fast mode selection, the default 11.0592Mhz the crystal.
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PCF8563的C51程序设计 .c