MK24FN1M0VLQ12 - Possible rootcauses for low reset voltage receiving at MCU unit

[mano93]

MPN:  MK24FN1M0VLQ12

Hi NXP Experts,

Can you please advise the possible root causes for low reset pin voltage experienced at programming stage?

We had faced the issue of getting the low reset voltage value and not able to flash the MCU unit and irregular V-I curve.

Below the failure report and let me know to resolve this issue. 

Attached the failure report and FA report from my side. Please guide your insights on this matter.

Thank you.

Regards 

Manoj Balakrishnan

[vicentegomez]

I am not sure that I got your question, do you have a low voltage on the reset pin?

is the part already programmed?

can you program the part?

[mano93]

Hi Expert , 

Thanks for your reply 

I am not sure that I got your question, do you have a low voltage on the reset pin? - yes 

is the part already programmed? - Not able to do the programming 

can you program the part? - No , Not able to load the program because of low voltage at reset pin . 

[vicentegomez]

What tool are you using to program the part?

Some programmer like the cyclone can supply the voltage to the device and they can hold the reset pin in low in order to enter to programming mode.

Are you programming the part in a PCB or only the device?

If the device is already mounted on the board please check that you have the pull up on the reset pin also a proper connection on the SWD pins

Do you have an external pull up on the NMI pin?

[mano93]

What tool are you using to program the part? 

Segger J-Link programmer

 Some programmers like the cyclone can supply the voltage to the device and they can hold the reset pin in low to enter to programming mode. – Attached circuit drawings 

 Are you programming the part in a PCB or only the device? 

On the board – ESI installs and then LiCor programs the board in its entirety

 If the device is already mounted on the board, please check that you have the pull up on the reset pin also a proper connection on the SWD pins ? 

Yes the reset pin was pulled up and properly connected

[vicentegomez]

Please check that the party is properly solder, with all the voltages

Also please let me know where did you buy those parts?

Can you share the body mark?

[mano93]

Hi Expert , 

Please find below reply for all the questions 

What tool are you using to program the part?

               We are utilizing a Segger J-Link to program the device.

Some programmer like the cyclone can supply the voltage to the device and they can hold the reset pin low in order to enter into programming mode.

               I assume they are asking if our programmer can pull voltage low and if so…

                              The Segger J-link reset type is an Open drain. Device can pull reset low or have it be tristated.

Are you programming the part in a PCB or only the Device?

               Device has been attempted to be programmed while installed onto a PCB

If the device is already mounted on the board please check that you have the pull up on the reset pin as well as a proper connection on the SWD pins.

               There is a 10k pull up resistor for the nReset on every PCB we tested, unit(s) were verified to have proper solder connections to all pins on device. All devices show 1.2V on NReset pin and do not accept programming when held low and develop an internal failure if reset pin is driven to the proper voltage value.

Do you have an external pull up on NMI pin?

               Yes, there is a 10k pull up resistor to 3.3V.

Unit Image of the part 

Looking forward for your support to conclude with some possible root causes may be affect the reset voltage of the component . 

Thank you 

Regards 

Manoj Balakrishnan. 

[vicentegomez]

thanks for the information, the part is date code 2015 week 06 maybe it is damaged.

where did you buy those parts?

was it on his original ESD bag?

Did you see any signal on the SDW clk when you try to program it?

regards