#ifndef __CONFIG_H__
#define __CONFIG_H__
typedef unsigned char U8;
typedef signed char S8;
typedef unsigned int U16;
typedef signed int S16;
typedef unsigned long U32;
typedef signed long S32;
typedef unsigned char BOOL;
#ifndef TRUE
# define TRUE 1
#endif
#ifndef FALSE
# define FALSE 0
#endif
#ifndef NULL
# define NULL 0
#endif
#define Fpclk 22118400
#include <stdio.h>
#include "STC12C5A.H"
#include "AutoISP.H"
#include "lcd.h"
#endif // end of __CONFIG_H__
以上CONFIG里的Fpclk是指什么？在后续的编程里再也没出现过。STC12C5A里也没有这个寄存器？请高手解答下，谢谢！
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