DS80C320-MCG Datasheet, PDF (60/175 Pages) Dallas Semiconductor – High-Speed Microcontroller User Guide

Real Time Clock Day Register 1 (RTCD1)
7
6
5
4
SFR FFh RTCD1.7 RTCD1.6 RTCD1.5 RTCD1.4
R*W*-* R*W*-* R*W*-* R*W*-*
3
RTCD1.3
R*W*-*
High-Speed Microcontroller User’s Guide
2
RTCD1.2
R*W*-*
1
RTCD1.1
R*W*-*
0
RTCD1.0
R*W*-*
R=Unrestricted Read, W=Unrestricted Write, -n=Value after Reset
RTCD1.7-0
Bits 7-0
Real Time Clock Day Register 1. This register contains the most significant
byte of the 16-bit current day count. This is not an absolute value tied to a
specific calendar date, but rather a relative day count defined by the user. This
register can be read only when the RTCRE bit is set, and can only be modified
when the RTCWE bit is set. Consult the description of the RTCWE bit for the
programming protocol for this register. The register counts from 0h to FFh. A
rollover of this register will clear RTCD1 and RTCD0. No alarm corresponds to
these bits.
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