PIC16F1503 休眠低功耗电流降不到数据手册上写的标准，求助 [

张衍波 · 发表于 2015-10-15 08:28:48

/*
项目：示例程序
芯片：PIC16F1503
功能：
休眠唤醒
2.7uA

脚位定义
         ________________________
         |VDD                VSS|
         |RA5             AN0/RA0|
         |RA4/AN3       AN1/RA1|
         |RA3       PWM3/AN2/RA2|
         |RC5/CWG1A/PWM1 AN4/RC0|
         |RC4/CWG1B PWM4/AN5/RC1|
         |RC3/AN7/PWM2    AN6/RC2|
         ------------------------

*/

#include <pic.h>

//芯片配置字
__CONFIG(0x3924);
__CONFIG(0x3FFF);

void main()
{
      /*
      振荡器控制寄存器
      <6-3>IRCF 内部振荡器频率选择位
                                                      5V供电       3.3V供电       T0
      1111 16MHz                               887uA                               125us
      1110 8MHz                               613uA                               250us
      1101 4MHz                               470uA                               500us
      1100 2MHz                               389uA                               1ms
      1011 1MHz                               354uA                               2ms
      1010 500kHz                               331uA                               4ms
      1001 250kHz
      1000 125kHz
      0111 500kHz 复位默认       332uA       290uA             4ms
      0110 250kHz
      0101 125kHz                               320uA
      0100 62.5kHz
      001x 31.25kHz                      317uA
      000x 31kHz                               20uA       18.3uA
      */
      OSCCON = 0B00000000;       //<6-3>IRCF;<1:0>SCS
      VREGCON= 0B00000010;       //<1>VREGPM

      /*
      PS 预分频比选择位
      000 1:2
      001 1:4
      010 1:8
      011 1:16
      100 1:32
      101 1:64
      110 1:128
      111 1:256
      */
      OPTION_REG = 0B00000000;//<7>#WPUEN;<6>INTEDG;<5>TMR0CS;<4>TMR0SE;<3>

SA;<2:0>

S

      APFCON = 0B00000000;       //备用引脚选择
      ANSELA = 0B00000000;       //模拟数字  1:模拟; 0:数字
      ANSELC = 0B00000000;       //模拟数字  1:模拟; 0:数字

      LATA = 0B00001000;       //数据锁存器
      TRISA  = 0B00001000;       //输入输出       1:输入; 0:输出
      PORTA  = 0B00001000;       //电平             1:高; 0:低
      WPUA = 0B00001000;       //上拉             1:使能; 0:禁止

      LATC = 0B00000000;       //数据锁存器
      TRISC  = 0B00000000;       //输入输出       1:输入; 0:输出
      PORTC  = 0B00000000;       //电平             1:高; 0:低

      IOCAP  = 0B00000000;       //PA电平变化中断正边沿
      IOCAN  = 0B00000000;       //PA电平变化中断负边沿

      //ADC
      FVRCON = 0B01000000;       //<7>FVREN;<6>FVRRDY;<5>TSEN;<4>TSRNG;<3:2>CDAFVR;<1:0>ADFVR
      /*<6-2>CHS
      00000 AN0
      00001 AN1
      00010 AN2
      00011 AN3
      00100 AN4
      00101 AN5
      00110 AN6
      00111 AN7
      11101 温度
      11110 DAC
      11111 FVR
      */
      ADCON0 = 0B01111100;       //<6-2>CHS;<1>GO/DONE;<0>ADON
      ADCON1 = 0B10100000;       //<7>ADFM;<6-4>ADCS;<1:0>ADPREF

      //Timer0
      TMR0 = 0x00;

      //Timer1
      /*
      <5:4>T1CKPS Timer1输入时钟预分频比选择位
      11 1:8
      10 1:4
      01 1:2
      00 1:1
      */
      T1CON  = 0B00000000;       //<7:6>TMR1CS;<5:4>T1CKPS;<2>#T1SYNC;<0>TMR1ON
      T1GCON = 0B00000000;       //<7>TMR1GE;<6>T1GPOL;<5>T1GTM;<4>T1GSPM;<3>T1GGO;<2>T1GVAL;<1:0>T1GSS
      TMR1H  = 0x00;                      //递增到FFFFh发生中断
      TMR1L  = 0x00;

      //Timer2
      /*
      <6-3>T2OUTPS Timer2输出后分频比选择位
      0000 1:1
      0001 1:2
      0010 1:3
      ...
      1101 1:14
      1110 1:15
      1111 1:16
      <1:0>Timer2时钟预分频比选择位影响PWM周期
      00 1
      01 4
      10 16
      11 64
      */
      T2CON  = 0B00000000;       //<6-3>T2OUTPS;<2>TMR2ON;<1:0>T2CKPS
      PR2 = 0x68;                      //周期寄存器//PWM周期=(PR2+1)×4Tosc×(TMR2预分频值)
      TMR2 = 0x00;                      //计数保持寄存器

      //PWM1
      /*
      38kHz T2CKPS预分频1, PR2=0X68

WM1DCH=0x1A;
*/
PWM1CON= 0B00000000; //<7>

WM1EN;<6>

WM1OE;<5>

WM1OUT;<4>

WM1POL
PWM1DCH= 0x1A; //PWM占空比高位
PWM1DCL= 0x00; //<7:6>

WM占空比低位 10位分辨率的占空比

      //CWG模块
      CWG1DBR= 0x0A;                      //<5-0>上升沿死区计数
      CWG1DBF= 0x0A;                      //<5-0>下降沿死区计数
      CWG1CON0=0B00000000;       //<7>G1EN;<6>G1OEB;<5>G1OEA;<4>G1POLB;<3>G1POLA;<0>G1CS0
      /* <2-0>G1IS
      111 LC1OUT
      110 N1OUT
      101 PWM4OUT
      100 PWM3OUT
      011 PWM2OUT
      010 PWM1OUT
      001 ASYNC_C1OUT
      000 ASYNC_C2OUT
      */
      CWG1CON1=0B10100010;       //<7:6>G1ASDLB;<5:4>G1ASDLA;<2-0>G1IS
      CWG1CON2=0B00000000;       //<7>G1ASE;<6>G1ARSEN;<3>G1ASDC2;<2>G1ASDC1;<1>G1ASDFLT;<0>G1ASDCLC2

      PIE1 = 0B00000000;       //<7>TMR1GIE;<6>ADIE;<3>SSP1IE;<1>TMR2IE;<0>TMR1IE
      PIR1 = 0B00000000;       //<7>TMR1GIF;<6>ADIF;<3>SSP1IF;<1>TMR2IF;<0>TMR1IF
      INTCON = 0B00000000;       //<7>GIE;<6>

EIE;<5>TMR0IE;<4>INTE;<3>IOCIE;<2>TMR0IF;<1>INTF;<0>IOCIF

      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");
      asm("nop");

      while(1)
      {
            SLEEP();
            ///////////////////////////////////////////////////////////
      }
}

转载