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MAXRTC(4) Device Drivers Manual MAXRTC(4)

maxrtcMaxim DS1307/DS1339 real-time clock

maxrtc* at iic?

The maxrtc driver supports the Maxim DS1307 and DS1339 real-time clock chips, which provide a low-power, full binary-coded decimal (BCD) clock/calendar. In addition, the DS1307 comes with 56 bytes of NV SRAM.

iic(4), intro(4)

The maxrtc driver first appeared in OpenBSD 6.0.

The maxrtc driver was written by Marcus Glocker <>.

October 25, 2022 OpenBSD-current