Connectors
UM2271
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DocID030906 Rev 2
Figure 12. USB Micro-B connector CN13
11.5
microSD card connector CN6
microSD cards with 4 GBytes or more capacity are inserted in the receptacle CN6. Four
data bits of the SDMMC1 interface, CLK and CMD signals of the STM32L4R9AI are used to
communicate with the microSD card at +3V3 only. The card insertion is detected by the
MFX_GPIO5: when a microSD card is inserted, the logic level is 0, otherwise it is 1.
Table 17. USB Micro-B connector CN13
Pin number
Description
Pin number
Description
1
VBUS (power)
4
GND
2
DM
5,6
Shield
3
DP
-
-
06Y9
