SEGGER J-Link Commander V6.80d (Compiled Jun 26 2020 17:17:12)
DLL version V6.80d, compiled Jun 26 2020 17:16:09

Connecting to J-Link via USB...O.K.
Firmware: J-Link V11 compiled Jun  9 2020 13:38:27
Hardware version: V11.00

VTref=5.024V


Type "connect" to establish a target connection, '?' for help
J-Link>connect
Please specify device / core. <Default>: MKE15Z256XXX7
Type '?' for selection dialog
Device>
Please specify target interface:
  J) JTAG (Default)
  S) SWD
  T) cJTAG
TIF>S
Specify target interface speed [kHz]. <Default>: 4000 kHz
Speed>
Device "MKE15Z256XXX7" selected.


Connecting to target via SWD
InitTarget() start
InitTarget()
InitTarget() end
Found SW-DP with ID 0x0BC11477
DPIDR: 0x0BC11477
Scanning AP map to find all available APs
AP[2]: Stopped AP scan as end of AP map has been reached
AP[0]: AHB-AP (IDR: 0x04770031)
AP[1]: JTAG-AP (IDR: 0x001C0020)
Iterating through AP map to find AHB-AP to use
AP[0]: Core found
AP[0]: AHB-AP ROM base: 0xF0002000
CPUID register: 0x410CC601. Implementer code: 0x41 (ARM)
Found Cortex-M0 r0p1, Little endian.
FPUnit: 2 code (BP) slots and 0 literal slots
CoreSight components:
ROMTbl[0] @ F0002000
ROMTbl[0][0]: F0000000, CID: B105900D, PID: 001BB932 MTB-M0+
ROMTbl[0][1]: F0001000, CID: B105900D, PID: 0008E000 MTBDWT
ROMTbl[0][2]: E00FF000, CID: B105100D, PID: 000BB4C0 ROM Table
ROMTbl[1] @ E00FF000
ROMTbl[1][0]: E000E000, CID: B105E00D, PID: 000BB008 SCS
ROMTbl[1][1]: E0001000, CID: B105E00D, PID: 000BB00A DWT
ROMTbl[1][2]: E0002000, CID: B105E00D, PID: 000BB00B FPB
Cortex-M0 identified.
J-Link>erase
Erasing device...

****** Error: Failed to read back RAMCode for verification.
Failed to prepare for programming.
Failed to download RAMCode!
ERROR: Erase returned with error code -1.
J-Link>r
Reset delay: 0 ms
Reset type NORMAL: Resets core & peripherals via SYSRESETREQ & VECTRESET bit.
Reset: Halt core after reset via DEMCR.VC_CORERESET.
Reset: Reset device via AIRCR.SYSRESETREQ.
AfterResetTarget() start
AfterResetTarget()
AfterResetTarget() end
J-Link>erase
Erasing device...

****** Error: Failed to prepare for programming.
Could not preserve target memory.
ERROR: Erase returned with error code -1.