5.4 Revision 7
Revision 7 improves the power supply circuit with PTC protection and the Target Power strap for current measurement.
The holes along the edge of the PCB are staggered for convenient use of pin headers without soldering.
There is a Kyocera Corporation ST3215SB32768C0HPWBB 7 pF crystal mounted on the 32.768 kHz crystal footprint on revision 7 of PIC16F18446 Curiosity Nano.