Feature #1706

Hardware / Circuit board update for SAM3S based SIMtrace2

Added by laforge over 2 years ago. Updated 13 days ago.

sysmocom hardware team
Target version:
Start date:
Due date:
% Done:


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(Total: 0.00 h)


We have a few boards using SAM3S instead of the old SAM7S, and just changing the chip + firmware while keeping the rest of the hardwrare seems fine.

However, we might want to add some other features to the board, while we are doing the switch to SAM3S.


Feature #1457: Spacing between JTAG and JP1/JP2Newtsaitgaist

Feature #1911: check if we can have an enclosed version of simtrace v2Newlaforge

Feature #1912: do proper re-layout of the boardNew


#1 Updated by laforge over 2 years ago

  • Assignee deleted (tsaitgaist)

#2 Updated by laforge over 1 year ago

  • Target version set to SIMtrace_v2

#3 Updated by laforge over 1 year ago

  • Checklist item consider switching from JTAG to SWD header added
  • Checklist item remove 6pin DEBUG connector? added
  • Checklist item remove RESET button? added
  • Checklist item add button for ERASE to SAM-BA added
  • Checklist item remove DC input, USB jack can be used for stand-alone power, too added
  • Checklist item have real SPDT switch rather than SPST added
  • Checklist item design with EAGLE to benefit from sysmocom parts library / processes added

#4 Updated by laforge 3 months ago

  • Project changed from SIMtrace to SIMtrace 2
  • Subject changed from Finalize SAM3S based SIMtrace2 to Hardware / Circuit board update for SAM3S based SIMtrace2
  • Category deleted (SIMtrace hardware)
  • Target version deleted (SIMtrace_v2)

#5 Updated by tsaitgaist 3 months ago

  • Checklist item add pull-up resistors on SC_SW and I/O_SW to set default state of bus switch to high impedance added

#6 Updated by tsaitgaist 22 days ago

  • Assignee set to tsaitgaist

#7 Updated by laforge 13 days ago

  • Category set to hardware

#8 Updated by laforge 13 days ago

  • Checklist item ESD protection (TVS diode arrays) on FPC, UART, USB added
  • Checklist item external USB pull-up circuitry with two transistors, shottyk diode can be removed (SAM3 and newer don't need it) added
  • Checklist item check for [soon] obsolete parts and replace with active ones added

#9 Updated by laforge 13 days ago

  • Assignee changed from tsaitgaist to sysmocom hardware team

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