AnsweredAssumed Answered

Cannot flash to QSPI NVM on custom LS1012A board (?)

Question asked by Alex Jee on Mar 14, 2018
Latest reply on Mar 26, 2018 by Alex Jee


I'm currently bringing up a custom LS1012A board that references the FRDM-LS1012A design.

Major differences/similarities of the custom board are:

  • Removal of K20 used for CMSIS DAP
  • Near-identical DDR3L SDRAM (AS4C512M16D3L used in place of MT41K256M16)
  • Same QSPI flash NVM (S25FS512SAGNFI011)
  • Similar reset switch circuit



CodeWarrior Flash Programmer always fails when attempting to write to QSPI flash memory. It will get stuck on "Erasing..." and fail after a while.


This is done with the same procedure that I've successfully used to flash RCW and U-Boot binaries into FRDM-LS1012A boards (some previously bricked by bad RCWs) with the CodeWarrior TAP. 


FP failed



Thing's I've Tried (To No Avail)

  • Enable hard-coded RCW with USE_SAFE_RCW = True
  • Enable hard-coded RCW with CLK_OUT pin
  • Connect DUT_PORST_B signal to SDRAM Reset
  • Adjust the JTAG speed
  • Verified correct voltages to all components



If anyone can shed some light on the problem or suggest something to try or double-check, I'd really appreciate it.