Rainbow-electronics DS1687 Bedienungsanleitung PDF herunterladen (Seite 11)

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generated each hour when the “don’t care” bits are set in the hours byte. Similarly, an alarm is generated

every minute with “don’t care” codes in the hours and minute alarm bytes. The “don’t care” codes in all

three time alarm bytes create an interrupt every second. The three time-alarm bytes can be used with the

date alarm as described in the Wake-Up/Kickstart section. The century counter is discussed later in this

text.

Table 1. TIME, CALENDAR, AND ALARM DATA MODES

DATA MODE RANGE

ADDRESS

LOCATION

FUNCTION

DECIMAL

RANGE

BINARY BCD

00H Seconds 0–59 00–3B 00–59

01H Seconds Alarm 0–59 00–3B 00–59

02H Minutes 0–59 00–3B 00–59

03H Minutes Alarm 0–59 00–3B 00–59

Hours 12-hour Mode 1–12

01–0C AM,

81–8C PM

01–12 AM,

81–92 PM

04H

Hours 24-hour Mode 0–23 00–17 00–23

05H

Hours Alarm 12-hour

Mode

1–12

01–0C AM,

81–8C PM

01–12 AM,

81–92 PM

Hours Alarm 24-hour

Mode

0–23 00–17 00–23

06H Day of Week Sunday = 1 1–7 01–07 01–07

07H Date of Month 1–31 01–1F 01–31

08H Month 1–12 01–0C 01–12

09H Year 0–99 00–63 00–99

BANK 1,

48H

Century 0–99 00–63 00–99

BANK 1,

49H

Date Alarm 1–31 01–1F 01–31

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 37 38

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