RIALTO SBC/Interfaces and Connectors/RTC
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RTC[edit | edit source]
Description[edit | edit source]
RIALTO SBC uses an external I2C RTC device, i.e. M41T83SQA6F.
An external lithium battery (like Panasonic ML-1220/V1AN rechargeable battery) can be optionally mounted on RIALTO SBC.
Signals[edit | edit source]
The following table describes the interface signals:
| Pin# | Pin name | Pin function | Pin Notes |
|---|---|---|---|
| 1 | RTC_LICELL | VBAT | coin cell battery network has to be properly configured for lithium battery recharge current |
| 2 | GND | Ground |
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.
