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The Real Time Clock interface available on AXEL Lite is based on xxxxx NXP MMPF0100 PMIC.  The Real Time Clock is kept operative through the AXEL Lite PMIC_LICELL pin (J2.14): the LICELL pin provides for a connection of a coin cell backup battery or a “super” capacitor. A small capacitor should be placed from LICELL to ground under all circumstances. For more information about PMIC RTC functionality, please refer to the [https://www.nxp.com/docs/en/data-sheet/MMPF0100.pdf MMPF0100] datasheet. ===Powering=== Real-time clock is integrated in iMX6 processor. As such, it belongs to SNVS power domain. This domain, in turn, is powered by PMIC, via PMIC_VSNSV rail (see also [[AXEL Lite SOM/AXEL Lite Hardware/Power and Reset/Power Supply Unit (PSU) and recommended power-up sequence|this page]]). PMIC integrates a sort of switch. When 3V3VIN voltage is applied, this is used to power SNVS domain. Otherwise energy is drawn from coin cell battery - if any - connected to PMIC_LICELL (for more details please refer to <ref name="MMPF0100">NXP, ''TBDMMPF0100 - PF0100 Data sheet:SOC nameAdvance Information'' SoC</ref>).   [[File:Axellite-rtc. png|thumb|center|600px|Simplified block diagram of AXEL Lite RTC powering scheme]]

* HighIt is worth remembering that 3.0V lithium batteries are supported and that PMIC_VSNSV voltage range is 2.4 -Definition Multimedia Interface Specification3.6V. When [[FAQs_(Axel)#Q:_How_to_enter_RTC_mode.3F|AXEL Lite enters RTC mode]] and 3V3VIN voltage is removed, Version 1typical current absorption from PMIC_LICELL pin is about 135uA.4a * Support for up This value is '''relatively high''' with respect to 1080p at 60Hz HDTV display resolutions and up to QXGA graphic display resolutionsthe typical lithium coin cell battery capacity (10 - 50mAh). It is recommended that system integrator verify that expected battery lifetime satisfies system requirement. * Support for 4k x 2k and 3D video formats * Support for up to 16If not, the use of an external low-bit Deep Color modespower RTC device should be considered.