Electronic – Failed to get Device ID – PICkit 3 & PIC16F684-ICD & AC16205


Like it is already mentioned in the title I have question regarding this dev stack:

  • MPLAB X IDE v1.80
  • PICkit 3
  • PIC16F684-ICD (datasheet)
  • AC16205

There is image of how things are connected (I don't think there is a problem):

enter image description here

Powering settings:
enter image description here

There is simple program I am using for testing:

 * File:   main.c
 * Author: Primoz
 * PIC16F684
 * Simple test program.

#include <xc.h>

#pragma config MCLRE = OFF      // MCLR Pin Function Select bit (MCLR pin function is digital input, MCLR internally tied to V
#pragma config FOSC = INTOSCIO  // Oscillator Selection bits (INTOSCIO oscillator: I/O function on RA4/OSC2/CLKOUT pin, I/O function on RA5/OSC1/CLKIN)
#pragma config WDTE = OFF       // Watchdog Timer Enable bit (WDT disabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config CP = OFF         // Code Protection bit (Program memory code protection is disabled)
#pragma config CPD = OFF        // Data Code Protection bit (Data memory code protection is disabled)
#pragma config BOREN = OFF      // Brown Out Detect (BOR disabled)
#pragma config IESO = OFF       // Internal External Switchover bit (Internal External Switchover mode is disabled)
#pragma config FCMEN = OFF      // Fail-Safe Clock Monitor Enabled bit (Fail-Safe Clock Monitor is disabled)

void main()
    TRISA = 0b111101;

    PORTA = 0b000010;

    for (;;)

I successfully programmed the device only few times. Most of the time I get this output:

Connecting to MPLAB PICkit 3...
Firmware Suite Version.....01.28.72
Firmware type..............Midrange

Target detected
Failed to get Device ID

So my question is what could be a reason for such an odd behaviour? How can I make it work?

If you need any additional information, please let me know…

Best Answer

I checked out if there are any loosed connections like suggested by @pjc50 - found none.

I even ordered new header and on my surprise the issue was still not gone.

After many trial and error I figured out that it works if I set Voltage Level to 4,875 (instead of 5V):

enter image description here