I am using PIC16F877A microcontroller and PICKIT2 for downloading hex file into the microcontroller.
I bought this PICKIT 2 recently and I used it frequently.
Now I am getting error in it and not able to download the hex file into it.
The details are given below.
Placed the microcontroller in the PICKIT 2 zif socket and selected Tools -> Check Communication.
PICKIT 2 recognized the microcontroller.
I tried to import hex file. The following error message is displayed.
Then I selected Tools -> Troubleshoot. The troubleshoot window is opened.
Step 1 is to check Vdd voltage. The step 1 itself got failed. The PICKIT 2 showed 3.8V at Vdd. But while checking with multimeter, the Vdd voltage was 2.6. For the correct functioning, the voltage must be above 4.5V
Step 2 is to check by providing 12V to Vpp pin of the microcontroller. When I clicked on Test Vpp button, PICKIT 2 displayed the following message:
‘Test failed:
VDD short detected.
VPP cannot be tested if a short exists on VDD.’
Then I removed the microcontroller form PICKIT 2 zif socket and selected continuity option in multimeter and placed the probes in Vdd pin and Vss pin of the zif socket(if PIC16F877A were placed) of PICKIT 2. Multimeter doesn’t sense any continuity.
Then I checked continuity between (Vdd pin & Vss pin), (Vdd pin & Vdd pin) and (Vss pin & Vss pin) of the microcontroller. The multimeter detected the continuity and the buzzer sound is started.
Is my microcontroller damaged?
I bought this PICKIT 2 recently and I used it frequently.
Now I am getting error in it and not able to download the hex file into it.
The details are given below.
Placed the microcontroller in the PICKIT 2 zif socket and selected Tools -> Check Communication.
PICKIT 2 recognized the microcontroller.
I tried to import hex file. The following error message is displayed.
Then I selected Tools -> Troubleshoot. The troubleshoot window is opened.
Step 1 is to check Vdd voltage. The step 1 itself got failed. The PICKIT 2 showed 3.8V at Vdd. But while checking with multimeter, the Vdd voltage was 2.6. For the correct functioning, the voltage must be above 4.5V
Step 2 is to check by providing 12V to Vpp pin of the microcontroller. When I clicked on Test Vpp button, PICKIT 2 displayed the following message:
‘Test failed:
VDD short detected.
VPP cannot be tested if a short exists on VDD.’
Then I removed the microcontroller form PICKIT 2 zif socket and selected continuity option in multimeter and placed the probes in Vdd pin and Vss pin of the zif socket(if PIC16F877A were placed) of PICKIT 2. Multimeter doesn’t sense any continuity.
Then I checked continuity between (Vdd pin & Vss pin), (Vdd pin & Vdd pin) and (Vss pin & Vss pin) of the microcontroller. The multimeter detected the continuity and the buzzer sound is started.
Is my microcontroller damaged?