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Original question:

CC3235MODAS: One PCB design to take either CC3220MODAx or CC3235MODAx

CC3235MODAS: One PCB design to take either CC3220MODAx or CC3235MODAx

Stuart Robertson
Intellectual 840 points
Part Number: CC3235MODAS
Other Parts Discussed in Thread: UNIFLASH

Hi,

Further questions on designing a board to take either the CC3220MODAx or the CC3235MODAx module with antenna.

1. PCB Footprint: can you confirm the PCB footprint for both modules is identical ?

2. XDS110: my target board will support an XDS110 IN connector (std 10-pin to mate with the LP XDSOUT conn). Pin 1 on the XDSOUT connector on the LP is VCC via a 1K res. I believe it was used for voltage sensing but no longer ? Shall I leave pin 1 on my XDSIN connector as a ‘no connect’ ? For info I will be running my board at 3.3V while developing.

3. SFLASH programming via UART: On my board I have broken out GPIO1, GPIO2 and nReset (and GND) so they can be directly connected with the ‘BackChannel UART’ jumpers on the LP. This will I believe facilitate programming of the SFLASH from the Uniflash application. Did I miss anything here ?

thks & rgds,

Stuart

Edinburgh.UK.

  • 0
    TI__Mastermind 40120 points

    Stuart,

    1. Yes, they are identical. See mechanical drawings at the end of each modules' datasheets. 

    2. Yes, pin1 is used for voltage sensing and the 1k resistor is there to limit current. I would leave pin1 as is and add the 1k resistor just in case. 

    3. No, you got it.

    BR,

    Seong