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PCXRTC(4) Device Drivers Manual PCXRTC(4)

pcxrtcNXP PCF8563 real-time clock

pcxrtc* at iic? addr 0x51

The pcxrtc driver provides support for the NXP PCF8563 real-time clock chip.

iic(4), intro(4)

The pcxrtc driver first appeared in OpenBSD 6.2.

The pcxrtc driver was written by Mark Kettenis <>.

November 20, 2018 OpenBSD-7.1