Hi
The Linkit 7688 documentation is a little vague on the power supply pins. Can someone please add some detail or point me to a more detailed document.
The Linkit 7688 has the following power supply pins,
5V
VCC
3V3
GND
(not available on the header is 5VUSB coming from the USB power connector
I have looked at the Linkit 7688 schematic to try to see how they are used. The power supply seems over designed given all the additional MOSFETs to try to switch certain paths on/off depending in the actual power supplied. Was that really necessary.
The naming convention changes from schematic to the standard I/O diagram.
VCC is actually 3V3_IN on the schematic.
5V is 5V_OUT on the schematic.
If I want to power the board from 3V3 then I should apply it to VCC(3V3_IN), right?
I assume that I can power the board from 5V even though the schematic says it’s 5V_OUT.
It’s 5V out from the USB socket point of view, but is the input to the on board 3.3V regulator.
I may have answered my own question, but please confirm anyway?
What is the minimum current consumption in low power / sleep mode? (I assume that there is one?)
Another question,
Is MPU_RESET active low or active high.
It seems like a nice product. I look forward to using it.
Thanks
Andre
