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Voltage levels

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Are Connect ME pins 5V tolerant?
asked Apr 25, 2006 in Plug N' Play by dhouston New to the Community (2 points)
recategorized Dec 18, 2013 by tuxembb

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8 Answers

0 votes
Yes the newer ME modules, with part number 50000878-xx are.

Cameron
answered Apr 26, 2006 by Cameron Seasoned Professional (221 points)
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Mouser lists DC-ME4-01T-C. Is that 5V tolerant?
answered Apr 26, 2006 by dhouston New to the Community (2 points)
0 votes
Please can you confirm whether the Digi Connect ME- Modules with P/No: 50000878-xx are 5V compatible for TxD, RxD, and other Handshaking signals apart from Vcc(5V).

Means we can directly interface 5V Microcontroller's UART directly to Digi Connect ME serial portion ( without a level shifter 5v <--> 3.3V).

Please confirm.

Thanks
Mohan
answered Apr 27, 2006 by mohan New to the Community (2 points)
0 votes
Vcc is NOT 5V tolerant. All of the serial and GPIO signals are. This is true for part number 50000878-xx, this includes DC-ME4-01T-C.

Cameron
answered Apr 27, 2006 by Cameron Seasoned Professional (221 points)
0 votes
> Vcc is NOT 5V tolerant. All of the serial and GPIO
> signals are. This is true for part number
> 50000878-xx, this includes DC-ME4-01T-C.
>
> Cameron

Great! Thank you.

I'll order one to play with today.
answered Apr 27, 2006 by dhouston New to the Community (2 points)
0 votes
How about the EM modules? I'm planning on connecting the EM vi SPI to a stand-alone CAN controller, which generates 5v control (SI etc.) signals.

If it is tolerant, is this due to some recent modification to the NS7520 itself, or has it always been tolerant (the current NS7520 hardware reference doc states VIH (max) = 3.6V in table 97).

Thanks,
Darrin
answered Apr 28, 2006 by dhansen New to the Community (25 points)
0 votes
The GPIO are not 5v tolerant, putting 5v on GPIO lines will damage the modules. If they were tolerant, it would list it in the HRM.
answered Mar 11, 2009 by charliek Veteran of the Digi Community (408 points)
0 votes
I should also clarify. This is in respect to the ME / Wi-ME 7520 versions. For the 9210 version, the NS9210 processor is 5v tolerant, so the Connect ME 9210 module is 5v tolerant (but output is still 3.3v).
answered Mar 11, 2009 by charliek Veteran of the Digi Community (408 points)
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