DS1339A Datasheet, PDF (10/19 Pages) Maxim Integrated Products – Low-Current, I2C, Serial Real-Time Clock

DS1339A
Low-Current, I²C, Serial Real-Time Clock
Table 3. Timekeeping Register Map
ADDRESS
00h
01h
BIT 7
0
0
02h
0
03h
0
04h
0
05h
Century
06h
07h
A1M1
08h
A1M2
09h
A1M3
0Ah
A1M4
BIT 6
BIT 5
10 Seconds
10 Minutes
BIT 4
12/24
AM/PM
20 Hour
10
Hour
0
0
0
0
10 Date
0
0
10
Month
10 Year
BIT 3
0
BIT 2 BIT 1
Seconds
Minutes
Hours
Day
Month
Year
10 Seconds
Seconds
10 Minutes
12/24
AM/PM
20 Hour
10
Hour
Minutes
Hours
DY/DT
10 Date
Day, Date
BIT 0
FUNCTION
Seconds
Minutes
Hours
Day
Date
Month
Year
Alarm 1
Seconds
Alarm 1
Minutes
Alarm 1
Hours
Alarm 1
Day, Alarm
1 Date
RANGE
00-59
00-59
01-12
+AM/PM
00-23
01-07
01-31
01-12
+Century
00-99
00-59
00-59
01-12
+AM/PM
00-23
01-07,
01-31
0Bh
A2M2
10 Minutes
Minutes
Alarm 2
Minutes
00-59
0Ch
A2M3
12/24
AM/PM
20 Hour
10
Hour
Hours
Alarm 2
Hours
01-12
+AM/PM
00-23
0Dh
A2M4
DY/DT
10 Date
Day, Date
Alarm 2
Day, Alarm
2 Date
01-07,
01-31
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
Charger
-
“0” - reads as Logic 0.
Note: Unless otherwise specified, the state of the registers are not defined when power is first applied or when V_CC and V_BACKUP
fall below the V_BACKUP(MIN).
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