DS3231DS Timekeeping Registers - 1ChicagoDave/NeoPixel-Ring-GPS-Clock GitHub Wiki

ADDRESS BIT 7 MSB BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 LSB FUNCTION RANGE
00h 0 10 Seconds Seconds Seconds 00–59
01h 0 10 Minutes Minutes Minutes 00–59
02h 0 12/24 AM/PM 10 Hour Hour Hours 1–12 + AM/PM 00–23
20 Hour
03h 0 0 0 0 0 Day Day 1–7
04h 0 0 10 Date Date Date 01–31
05h Century 0 0 10 Month Month Month/ Century 01–12 + Century
06h 10 Year Year Year 00–99
07h A1M1 10 Seconds Seconds Alarm 1 Seconds 00–59
08h A1M2 10 Minutes Minutes Alarm 1 Minutes 00–59
09h A1M3 12/24 AM/PM 10 Hour Hour Alarm 1 Hours 1–12 + AM/PM 00–23
20 Hour
0Ah A1M4 DY/DT 10 Date Day Alarm 1 Day 1–7
Date Alarm 1 Date 1–31
0Bh A2M2 10 Minutes Minutes Alarm 2 Minutes 00–59
0Ch A2M3 12/24 AM/PM 10 Hour Hour Alarm 2 Hours 1–12 + AM/PM 00–23
20 Hour
0Dh A2M4 DY/DT 10 Date Day Alarm 2 Day 1–7
Date Alarm 2 Date 1–31
0Eh EOSC BBSQW CONV RS2 RS1 INTCN A2IE A1IE Control —
0Fh OSF 0 0 0 EN32kHz BSY A2F A1F Control/Status —
10h SIGN DATA DATA DATA DATA DATA DATA DATA Aging Offset —
11h SIGN DATA DATA DATA DATA DATA DATA align="center"DATA MSB of Temp —
12h DATA DATA 0 0 0 0 0 0 LSB of Temp -
  • (Current data as of January 2014)
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