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đây là tài liệu mình tìm được để khai bao #fuses cho pic 4331.bác nào biết vào chỉ giúp ý nghĩa của nó với.

#include <18F4431.h>
#device adc=8
#FUSES NOWDT //No Watch Dog Timer
#FUSES WDT128 //Watch Dog Timer uses 1:128 Postsc
#FUSES HS //High speed osc with HW enabled 4X PL
#FUSES NOPROTECT //Code not protected from reading
#FUSES IESO //Internal External Switch Over mode en
#FUSES BROWNOUT //Reset when brownout detected
#FUSES BORV27 //Brownout reset at 2.7V
#FUSES NOPUT //No Power Up Timer
#FUSES NOCPD //No EE protection
#FUSES NOSTVREN //Stack full/underflow will not cause reset
#FUSES NODEBUG //No Debug mode for ICD
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOWRT //Program memory not write protected
#FUSES NOWRTD //Data EEPROM not write protected
#FUSES NOFCMEN //Fail‐safe clock monitor disabled
#FUSES NOWINEN //WDT Timer Window Disabled
#FUSES T1LOWPOWER //Timer1 low power operation when in sleep
#FUSES HPOL_HIGH //High‐Side Transistors Polarity is Active‐High (PWM 1,3,5 and 7)
//PWM module high side output pins have active high output polarity
#FUSES NOWRTC //configuration not registers write protected
#FUSES NOWRTB //Boot block not write protected
#FUSES NOEBTR //Memory not protected from table reads
#FUSES NOEBTRB //Boot block not protected from table reads
#FUSES NOCPB //No Boot Block code protection
#FUSES LPOL_HIGH //Low‐Side Transistors Polarity is Active‐Low (PWM 0,2,4 and 6)
#FUSES PWMPIN //PWM outputs disabled upon Reset
#FUSES MCLR //Master Clear pin enabled
#FUSES FLTAC1 //FLTA input is multiplexed with RC1
#FUSES SSP_RD //SCK/SCL=RD3, SDA/SDI=RD2, SDO=RD1
#FUSES PWM4B5 //PWM4 output is multiplexed on RB5
#FUSES EXCLKC3 //TMR0/T5CKI external clock input is muliplexed with RC3
#use delay(clock=10000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bi ts=8)
#FUSES HPOL_low //High‐Side Transistors Polarity is Active‐High (PWM 1,3,5 and 7)
#FUSES LPOL_low //Low‐Side Transistors Polarity is Active‐Low (PWM 0,2,4 and 6)
#locate PTCON0 = 0xF7F #bit PTMOD0 = PTCON0.0 #bit PTMOD1 = PTCON0.1
#bit PTCKPS0 = PTCON0.2 #bit PTCKPS1 = PTCON0.3 #bit PTOPS0 = PTCON0.4
#bit PTOPS1 = PTCON0.5 #bit PTOPS2 = PTCON0.6 #bit PTOPS3 = PTCON0.7
//===========================
#locate PTCON1 = 0xF7E
#bit PTEN = PTCON1.7 #locate DTCON = 0xF6D #bit DT0 = DTCON.0
#bit DT1 = DTCON.1 #bit DT2 = DTCON.2 #bit DT3 = DTCON.3
#bit DT4 = DTCON.4 #bit DT5 = DTCON.5 #bit DTPS0 = DTCON.6
#bit CTPS1 = DTCON.7
#locate PTMRL = 0xF7D #locate PTMRH = 0xF7C
#locate PTPERL = 0xF7B #locate PTPERH = 0xF7A
#locate PDC0L = 0xF79 #locate PDC0H = 0xF78
#locate PDC1L = 0xF77 #locate PDC1H = 0xF76
#locate PDC2L = 0xF75 #locate PDC2H = 0xF74
#locate PDC3L = 0xF73 #locate PDC3H = 0xF72

//===========================
#locate SEVTCMPL = 0xF71#locate SEVTCMPH = 0xF70

#locate PWMCON0 = 0xF6F
#bit PMOD0 = PWMCON0.0 #bit PMOD1 = PWMCON0.1 #bit PMOD2 = PWMCON0.2
#bit PMOD3 = PWMCON0.3 #bit PWMEN0 = PWMCON0.4 #bit PWMEN1 = PWMCON0.5
#bit PWMEN2 = PWMCON0.6
//=======================================
#locate PWMCON1 = 0xF6E
#locate OVDCOND = 0xF6B
#bit POVD0 = OVDCOND.0 #bit POVD1 = OVDCOND.1 #bit POVD2 = OVDCOND.2
#bit POVD3 = OVDCOND.3 #bit POVD4 = OVDCOND.4 #bit POVD5 = OVDCOND.5
#bit POVD6 = OVDCOND.6 #bit POVD7 = OVDCOND.7

#locate OVDCONS = 0xF6A
#bit POUT0 = OVDCONS.0 #bit POUT1 = OVDCONS.1 #bit POUT2 = OVDCONS.2
#bit POUT3 = OVDCONS.3 #bit POUT4 = OVDCONS.4 #bit POUT5 = OVDCONS.5
#bit POUT6 = OVDCONS.6 #bit POUT7 = OVDCONS.7

void main()
{
setup_adc_ports(sAN0|VSS_VDD);
setup_adc(ADC_CLOCK_INTERNAL|ADC_TAD_MUL_2|ADC_WHE N_INT0|ADC_INT_EVERY_OTHER);
setup_spi(SPI_SS_DISABLED); setup_wdt(WDT_OFF); setup_timer_0(RTCC_INTERNAL);



setup_timer_1(T1_DISABLED); setup_timer_2(T2_DISABLED,0,1);

PTCON0=0X1f; PTCON1=0X80; //***********************************
PWMCON0=0X47; PWMCON1=0X30;
//PWMCON0=0X40; PWMCON1=0X30;
PTPERL=0X1F; PTPERH=0X01; //***************************************
//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐� �‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐� ��‐‐‐‐‐‐‐‐pwm0
PDC0L=0X4F; PDC0H=0X01;
//--------------------------------duty cycle pwm1
PDC1L=0X4F; PDC1H=0X01;
//--------------------------------duty cycle pwm2
PDC2L=0X4F; PDC2H=0X01;