Electronic – ICD3err0045 – PIC16F819 Programming

errorpicprogramming

After posting: Programming/Debugging with ICD3 and PIC16F819-I/P

I'm still getting the MPLAB error:
ICD3Err0045 – You must connect a target device to use MPLAB ICD 3

My Setup (pinout and wireup):
PIC16F819 Pinout and Current Configuration

MPLAB Screen (You may need to zoom in a bit):
enter image description here

I did notice that under Programmer > Settings > Status:

enter image description here

  • Target Vdd seems wrong (0.02 persist even after clicking 'refresh').
  • "Allow ICD 3 to select memories and ranges" is set
  • "Power target circuit from MPLAB ICD3" is unchecked.
  • Voltage between PIC pins 5 and 14 is 5.14, but once I try to connect to ICD3 and
    click "Reconnect" this voltage drops to 3.4
  • My voltage supply is an AC to DC adapter from a wireless mic receiver (SHURE PS21US,
    output 12V, 400 mah) put through a voltage divider L7805CV to give me 5.08 volts.
  • The datasheet for the PIC16F819 can be found here.

EDIT: I added a 5V voltage regulator, and a .01uF cap across Vdd and GND (before it even goes to the regulator), and a 2.6k resistor in series with !MCLR. Still getting the same error (Programmer status remains unchanged even after refresh – it's like ICD3 isn't grounded…just guessing though).

What am I doing wrong?

Best Answer

That error indicates that the target device isn't powered. Check that the supply to the Vdd pin is present.

The use of a voltage divider is probably the cause of the problem. Use a proper regulator.

The Vdd pin should be decoupled.

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