General Category > Discussion - MCU
MM900EV1B dimensions - relative board X/Y of J2 from CN3
(1/1)
hdc:
Hello all - hope everyone is doing well,
On the MM900EV1B board, what is the position of the
J2 connector (dual-entry SPI master)
relative to the
CN3 connector (40-pin external I/O) ?
For example, J2 pin 1 relative to CN3 pin 1 or 27 or each
relative to the origin marker on page 6 of the MM900EVxB
Datasheet v1.0.
Thanks in advance.
BRT Community:
Hello,
Here are the measurements taken using Altium Designer:
CN3 Pin1 (topside)
X = 3.37mm
Y = 3.9mm
J2 Pin1 (bottomside)
X = 36.375mm
Y = 76.43mm
We can also supply a 3D step model of the board which will allow you to take you own measurements.
If you would like this, please contact us via email.
Best Regards,
BRT Community
hdc:
Thanks very much. I'll follow-up by e-mail; having a step model would be useful as well. (update - e-mailed the support.us address.)
David
BRT Community:
Hello,
OK we have received your email and will send across the 3D step model of the module.
Best Regards,
BRT Community
hdc:
Following up to thank you for the support here and by e-mail.
After clarifying my question we ended up using:
X = 33.005 mm
Y = 74.26 mm
as the position of the pin center for J2-1 relative to CN3-1.
These (unofficial) dimensions worked well for us.
Thanks again,
David
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