NOVA
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M7Plus
Hardware User Manual
N.M7PLUS-250519-HUM-V1.1
Page 14 of 29
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(*) Note: the µSD slot is 3.3V powered and has no provisions to manage the insertion or the removal of the
µSD card with power applied, and thus no ESD protections equip the µSD slot.
The insertion or the removal of a µSD card with applied power may result in a permanent damage to the
card or, worst, to the
NOVA
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M7Plus board.
The card MUST be inserted without power applied.
The presence switch that equips the µSD slot of the
NOVA
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M7Plus board signals to the processor that a
card is in the slot, thus allowing the boot process to read the bootloader from the µSD slot.
If the card is not found when the power is applied the boot process will look in eMMC chip for a valid
bootloader code but the presence of the eMMC depends on the
NOVA
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M7Plus board equipment.
The µSD slot is a push only operated slot.
Removing the µSD card without pushing will result in mechanical failure of the slot itself.
4.4 J9 Expansion Connector pinout
Figure 5: J9 Details