Test Port A Bit 0 ON LED

First Experiment we will test Port RA by on RA0 that connect to LED the schematic for Experiment 1is shown below in Figure 1

Assemble circuit as figure 1.1 and load Programming to PIC16F628 after that on power supply you will see result it

Source Code For Experiment 1

list p=16f628 ; list directive to define processor
#include ; processor specific variable definitions
__CONFIG _CP_OFF & _WDT_OFF & _BODEN_ON & _PWRTE_ON & _XT_OSC & _MCLRE_ON & _LVP_OFF

org 0x000
clrf PORTA ; Initial PORT A
; output data latches
movlw 0x07 ; Turn Comparator off and
movwf CMCON ; Enable pins for I/O
bsf STATUS,RP0 ; Select Bank 1
movlw b'11111110' ; All PORTA = Input
movwf PORTA ; RA0 = Output
bcf STATUS,RP0 ; Return to Bank 0
bcf PORTA,0 ; RA0 = 0 LED "ON"
goto $

END ; end of program'



Tools & Components

Name List Quantity
MPLAB -
PIC16F628 1
4 MHz Crystal 1
LED 1
33pF Capacitors 2
1K Resistors 1
4.7K Resistors 1
Push Button Switch