在直插的上面没有问题,我现在用的是贴片的.请问贴片的和直插的区别这么大????????

请大家帮帮忙!!!!现把PCA部分程序写出来,大家帮我分析一下是不是软件上有问题!

#include  <c8051F330.h>  

#define uint         unsigned int
#define uchar        unsigned char 

void SYSCLK_Init (void);                            // 系统时钟初始化
void PORT_Init (void);                              // 端口初始化
void PCA_Init(void);                                // PCA初始化
void PCA_ISR(void);                                 // PCA中断服务程序

sfr16 PCA0CP0  = 0xFB;
bit PCA0newdata;  
uint Pcacap0[4];                                                  
uchar num0;                                       // 记录Pcacap0[4]数组的下标

main()
{
 PCA0MD &= ~0x40;  
    SYSCLK_Init ();                                  // 系统时钟初始化
 PORT_Init ();                                    // 端口初始化       
 PCA_Init();                                      // PCA初始化    
 EA=1;                                            // 使能总中断                               
 num0=0;
 while(1)
 {
        if( PCA0newdata ==1)
  {
   if( num0 >  = 4 )
   {
       num0 = 0;
   }
   PCA0newdata = 0;   
  } 
 }
}

void PCA_ISR(void) interrupt 11
{
    static uint tempdata0 = 0;
 Pcacap0[num0] = PCA0CP0-tempdata0;
 tempdata0 = PCA0CP0;
 num0++;
 PCA0newdata = 1;
 CCF0 = 0;
}
void PORT_Init (void)
{
    P0MDIN    = 0x7E;                              P0.2和P0.3分配给CEX0和CEX1
    P0SKIP    = 0x83;
 P1MDOUT   = 0xC4;
    XBR0      = 0x01;
    XBR1      = 0x42;  
}

void SYSCLK_Init (void)
{
    OSCICN    = 0x83;                                 // 系统时钟为24.5MHz
    RSTSRC    = 0x04;                                 // 使能时钟丢失检测器
}

void PCA_Init(void)
{
    PCA0CN    = 0x40;                                 // 允许PCA计数器/定时器
    PCA0MD    = 0x00;                                 // PCA计数器/定时器时钟源
                                                   // 选择为系统时钟的12分频
               // PCA 定时器32.1ms溢出一次，溢出中断不允许
               // PCA计数器/定时器溢出中断禁止
    PCA0CPM0  = 0x21;                                 // 正沿捕捉功能使能，开启CCF0中断                           
 EIE1     |= 0x10;