Battery questions, I have. Several actually, but all power related on a FEZ Domino.
First is the RTC backup battery. The specs for the LPC2388 NXP chip allow a maximum of 4.6 volts on the V-batt pin. Am I safe in assuming that the USBizi derivative is the same and will be OK with a 3.6 volt Lithium-ion half AA as the battery backup? I need the backup to last decades so that’s why I’m using a higher capacity battery than a coin cell. Also is V-batt accessed at pin 8 on J1?
Second question. I’m evaluating the Domino to replace an older 8 bit 80C52 based single board computer that runs outdoors year round off of a 12 volt battery recharged with a small solar panel. The LM1117 5 volt regulator used on the Domino specs at 15 volts max input voltage. with a diode in series I don’t expect the input voltage from the panel battery combination to exceed 14.4 volts so I’m willing to risk hooking the Domino up to this power source. Anyone had any similar experience or advice?
I have a couple of other questions on other topics so I’ll put them in a separate thread. Thanks in advance for any help.