Rainbow Electronics DS1339 - Manual (Page 5)

DS1339
5 of 18
Figure 2. DS1339 TIMEKEEPER REGISTERS
ADDRESS BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0 FUNCTION RANGE
00H 0 10 SECONDS SECONDS Seconds 00–59
01H 0 10 MINUTES MINUTES Minutes 00–59
AM/PM
02H 0 12/24
10HR
10HR HOUR Hours
1–12 +
AM/PM
00–23
03H 0 0 0 0 0 DAY Day 1–7
04H 0 0 10 DATE DATE Date 00–31
05H CENTURY 0 0 10 MO 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
AM/PM
09H A1M3 12/24
10HR
10HR HOUR
Alarm 1
Hours
1–12 +
AM/PM
00-23
0AH A1M4 DY/DT 10 DATE
DAY
DATE
Alarm 1
Day
Alarm 1
Date
1–7
1–31
0BH A2M2 10 MINUTES MINUTES
Alarm 2
Minutes
00–59
AM/PM
0CH A2M3 12/24
10HR
10HR HOUR
Alarm 2
Hours
1–12 +
AM/PM
00–23
0DH A2M4 DY/DT 10 DATE
DAY
DATE
Alarm 2
Day
Alarm 2
Date
1–7
1–31
0EH
EOSC
0 BBSQI RS2 RS1 INTCN A2IE A1IE Control —
0FH OSF 0 0 0 0 0 A2F A1F Status —
10H TCS3 TCS2 TCS1 TCS0 DS1 DS0 ROUT1 ROUT0
Trickle
Charge
—
Note: Unless otherwise specified, the registers’ state are not defined when power is first applied or V
CC
and V
BACKUP
falls below the V
BACKUP
min.