Communication error while accessing MDM-AP (S9KEAZN8AMFKR)

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I am trying to flash and check the contents of the flash memory of an S9KEAZN8AMFKR.

I connected pin 3 to 3.3V, pin 4 to GND, pin 22 to SWD_CLK (with a 10k pull down), pin 23 to RESET, and pin 24 to SWD_DIO.

But when I try to connect to the MCU, it encounter this.

1. Using J-Link Mini EDU, I encountered this.

- Connecting via USB to probe/ programmer device 0
- Probe/ Programmer firmware: J-Link EDU Mini V1 compiled Mar 14 2024 13:18:10
- Probe/ Programmer S/N: 801055094
- Device "S9KEAZN8XXXX" selected.
- Target interface speed: 4000 kHz (Fixed)
- VTarget = 3.288V
- InitTarget()
- SWD selected. Executing JTAG -> SWD switching sequence.
- Connect Under Reset
- SWD selected. Executing JTAG -> SWD switching sequence.
- Communication error while accessing MDM-AP.
- Connect Under Reset
- InitTarget()
- SWD selected. Executing JTAG -> SWD switching sequence.
- Connect Under Reset
- SWD selected. Executing JTAG -> SWD switching sequence.
- Communication error while accessing MDM-AP.
- Connect Under Reset
- ERROR: InitTarget(): PCode returned with error code -1

- ERROR: Failed to connect.
Could not establish a connection to target.
- ERROR: Connect failed

2. Using PEmicro Multilink-LC, I encountered this.

- Can't communicate with the target processor! Please check your connections between the cable and the target and make sure the target has power.

I checked all the connections and they are good. 

Can someone please advise.

Thanks!

[_Leo_]

Hi,

Thank you so much for your interest in our products and for using our community.

Please refer to the 2.1.5.3 Debug interface section from KQRUG Kinetis K Quick Reference User Guide or also you can take as reference the debug interface from any of the KEA EVKs.

Hope it helps you.

Have a nice day!