User Manual

32
8. Reference Circuit
Module’s default is using “DC-DC mode”, and must connect it to external
32.768khz to work.
REMARK:
** When NOT using DC-DC (VDDH) mode, please remove L4. **
(L4 spec: 10𝛍H, 0603 Chip Inductor, IDC, min = 80mA, ±𝟐𝟎%)
** When NOT using NFC, please remove NFC1 / C19 / C21. **
** When using internal 32.768khz RC oscillator, please remove X2 / C12 / C13. **