Details for using Apollo 3 without BLE

If not using the BLE radio, the following reduced BOM can be used: 

1. Tie VCC together with VDDP/VDDH/VDDA/VDDB to battery supply 
2. Connect all VSS pins, including VSSB, to PCB GND 
3. Leave both 32MHz clock pins unconnected/floating 
4. RFIOP – leave unconnected/floating,  RFIOM – Connect to PCB GND 
5. No cap needed on DVDD, leave pin unconnected/floating 

If 96MHz burst mode will NOT be used: Short VDDBH_SW, VDDBH, and VDCDCRF together (but keep 4.7uF cap on VDDBH) 

If 96MHz burst mode may be used: The 1uH inductor between VDDBH_SW and VDDBH is required and a 4.7uF cap on VDDBH.  VDDBH shorted to VDCDCRF (or 0-ohm resistor between them as in EVB). 

NOTE:  If using 3.3V supply voltage then for the lowest power operation without BLE functionality the SDK function am_bsp_ble_3p3c_low_power_mode() (added in AmbiqSuite 2.5) should be called during initialization.