PICKIT 2 verification failed at memory address 0x0000

Question

I have been using a DSPIC30f4011 for two days but suddenly I am no longer able to program the chip again.

The message I am getting:

Failed to verify at programming address 0x0000 (when I click the Verify button).

Failed to program at programming address 0x0000 (when I click the Write button).

Successful (when I click Read button).

Successful (when I click erase button).

I clicked on the erase button and tried to get rid of the error. But when I clicked read after erasing it, the first byte is still 0000 0000. Everything else is FFFF.

I am pretty sure the wiring and power supply is correct because when I put a new chip into the spot where the old chip was at, PICKIT 2 is able to program/verify it.

The pickit shows All protect for both old chip and new chip so it's not a problem.

If you can erase it then what is read? Also what voltage are you running — Grady Player, Feb 19 '13 at 03:25
@GradyPlayer The erase is not working. Every time read will return the same thing after the chip is erased. I am running at 4.7 V. I never enable code protect. Another new chip is doing the same thing to me. — Timtianyang, Feb 19 '13 at 15:06
I was having the same thing yesterday with a 16f884, after pulling my LEDs out, and reprogramming once at 5v then unchecking erase before program I was able to reprogram... After reading that whole chip erase needs 5v — Grady Player, Feb 19 '13 at 17:12
Yeah, I do have several LEDs connected to the chip when it is being programmed. But unplugging them doesn't solve the problem. Thanks though. — Timtianyang, Feb 19 '13 at 21:28
well unplugging the leds was only to allow me to bump the voltage to 5.0 from 3.3 without changing resistor values or burning them up. — Grady Player, Feb 19 '13 at 22:07

score 4 · Accepted Answer · answered May 01 '13 at 15:13

4

AVDD and AVSS must be connected.

answered May 01 '13 at 15:13

Timtianyang

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Was this responsible for the issue you were having? – rdtsc Feb 05 '16 at 12:54
yes. At least for the chip I'm using, as soon as they are connected the issue is gone. page 12 of the datasheet: "This pin must be connected at all times." – Timtianyang Feb 05 '16 at 18:50

score 3 · Answer 2 · answered Feb 18 '13 at 22:06

3

The device is probably faulty.

answered Feb 18 '13 at 22:06

Leon Heller

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but I am able to read from it. – Timtianyang Feb 18 '13 at 22:09
But you can't program it. – Leon Heller Feb 18 '13 at 23:14
I concur that the device may be damaged or there is a problem with device power. – Chetan Bhargava Mar 21 '13 at 05:13

score 1 · Answer 3 · answered Apr 29 '13 at 19:02

If you attempt to erase a device and then perform a blank check on it and the blank check fails there’s a chance that the flash memory on the IC is bad. Flash memory based devices only have so many erase / write cycles that can be performed on them before they burn out.

PICKIT 2 verification failed at memory address 0x0000

3 Answers3