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Thursday, June 11, 2020

MPC5605B Cannot Enter background mode
Dustin M. Jun 11, 2020 at 03:07 PM (15:07 hours)
Staff: Takao Y.

5 comments

Hello, 

I am trying to figure out why I cannot enter BGDM.

I receive this in the Status Window.  

Device IDCODE is $00000244
Device ID Revision is $00000000

Device IDCODE is $00000244
Device ID Revision is $00000000

Device IDCODE is $00000244
Device ID Revision is $00000000

Device IDCODE is $00000244
Device ID Revision is $00000000

Then it asks to choose the Algo for the chip. After this is what is 
shown in the Status window. 

Device IDCODE is $00000244
Device ID Revision is $00000000

Device IDCODE is $00000244
Device ID Revision is $00000000

Device IDCODE is $00000244
Device ID Revision is $00000000

Device IDCODE is $00000244
Device ID Revision is $00000000
  Cannot enter background mode.  Check connections.

Any pointers are greatly appreciated.

Comment #1 Dustin M. - June 11, 2020 - 03:07 PM (15:07 hours)

Comments

Greetings,

Which algorithm are you selecting?

When you open the software, try lowering the debug shift frequency and add 250 ms delay after reset. See if that improves your connection.

If you continue to have issues, the next step is checking the RESET line with an oscilloscope. See if you get continuing patterns of reset. This indicates a watchdog and you need to figure out a way to disable the system bus chip or external watchdog on your board. A schematic will probably be required.


Takao

Comment #2 Takao Y. (PEmicro Staff) - June 11, 2020 - 03:22 PM (15:22 hours)

```
Greetings,

Do you have any other questions or concerns?


Takao
```
Comment #3 Takao Y. (PEmicro Staff) - June 18, 2020 - 11:02 AM (11:02 hours)

Hi, 

This is a secondary project, so I will try that and let you know. 
Thank you for the follow up. 

Hopefully this weekend I will have time to test and report back.

Comment #4 Dustin M. - June 18, 2020 - 11:14 AM (11:14 hours)

```
Greetings,

Any more information on this?


Takao
```
Comment #5 Takao Y. (PEmicro Staff) - July 8, 2020 - 04:05 PM (16:05 hours)

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