UM2408 Rev 1
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UM2408
Hardware layout and configuration
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Figure 15. Supply configuration 3: Internal SMPS & LDO cascaded
Figure 16. Supply configuration 4: external SMPS
6.4.9
JP5: 1.8 V / 3.3 V selection
JP5, labeled "VDD_MCU" is used to select the VDD supply for the MCU:
•
Jumper JP5 pin 1-2: VDD_MCU = 3.3 V (default configuration)
•
Jumper JP5 pin 2-3: VDD_MCU = 1.8 V
6.5
External SMPS selection
User can connect an external SMPS to CN6 footprint (i.e.: ST1PS02D1QTR).
CN6 pin-out is described in
