SBC Axel SBC/Interfaces and Connectors/RTC

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Issue Date Notes
2021/09/22 First EVK release

RTC[edit | edit source]

Description[edit | edit source]

SBCX uses the RTC device provided by AXEL Lite PMIC

An external lithium battery (like Panasonic ML-2020/G1AN rechargeable battery) can be optionally mounted on SBCX.

Lithium battery

Signals[edit | edit source]

The following table describes the interface signals:

Pin# SOM Pin# Pin name Pin function Pin Notes
- J10.14 PMIC_LICELL coin cell battery network has to be properly configured for lithium battery recharge current

Device mapping[edit | edit source]

RTC is mapped to /dev/rtc0 device in Linux.

Device usage[edit | edit source]

The peripheral can be accessed through the date and hwclock linux commands.