AT89C51 is blinking with 4K-byte erasable programmable read-only memory (EPEROM) low-voltage, high-performance CMOS 8-bit microcontroller (commonly known as single-chip). Following is the pin description.

Packet : 55593403at89c51shuoming.rar filelist
AT89C51的主要特性和引脚功能 .txt

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