Three AXELULite system-on-module (SOM for short) is powered by carrier board via <code>VIN_SOM</code> rail. About voltage range, three supported voltage ranges configurations are available. These configurations are indicated by the value of the '''f''' field of the ordering code. The generic ordering code is in the form <center><code>DA p l r n c '''f''' t s</code></center> The field '''f''' can assume the following values:*0, 1: power supply voltage range 3.135 - 3.465V (that is 3V3±5%)*2: power supply voltage range is 3.3 - 4.5V**please note that this range can be widened by the use of an external MOSFET; for more details please refer to [mailto:support-axel@dave.eu technical support]*3: power supply voltage range is 3.25 - 3.465V (that us 3.3 +5%/-1.5%).
== Power Supply Unit (PSU) and recommended power-up sequence ==
