Introduction - If you have any usage issues, please Google them yourself
1. Test with C8051F320 do USB speed to 240 KBPS. Includes MCU source, driver and PC application 2. MCUc8051f040 with built-in real-time clock chip PCF8563 IIC controller, speaking, reading and writing, and complete the BCD code to decimal code conversion 3. PCF8563 drivers, by simulating the IIC bus PCF8563 for access, read and write a complete report to the police, timing interrupt, finally the time display on LED 4. USB CDC using C8051F320340, virtual COM port thru USB connection5. The library function to achieve the C8051F020 SMBUS bus drive