DS1678 Maxim, DS1678 Datasheet - Page 11

• Manufacturer Part Number: DS1678
• Description: The DS1678 real-time clock (RTC) event recorder records the time and date of a nonperiodic, asynchronous event each time the active-low INT pin is activated
• Manufacturer: Maxim

Figure 2. DS1678 RTC and Control Page
ADDRESS
0A
0B
0C
0D
3A
3B
3C
3D
0E
0F
2F
3E
3F
FF
00
01
02
03
04
05
06
07
08
09
10
11
12
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
↓
↓
MSB
BIT 7
MM
MH
MD
MS
ME
0
0
0
0
0
0
0
0
0
0
0
0
0
MEM
12/24
12/24
BIT 6
CLR
CLR
12/24
0
0
0
0
Higher addresses read back as 00h while a mission is in progress.
0
0
0
10 Century
10 Century
10 Seconds Alarm
10 Minutes Alarm
10 Year
10 Year
Event 0 Elapsed Time from Last Event Counter MSB
Event 0 Elapsed Time from Last Event Counter LSB
10 Seconds
10 Minutes
10 Seconds
10 Minutes
AM/PM
AM/PM
AM/PM
BIT 5
DIS1
10 Hr
10 Hr
10 Hr
MIP
0
0
0
0
0
10 Date
10 Date
10 Mo
10 Mo
BIT 4
DIS0
10 Hr
10 Hr
10 Hr
High Address Byte
High Address Byte
Low Address Byte
Low Address Byte
CM
0
0
0
Medium Byte
(Reads 00h)
(Reads 00h)
High Byte
High Byte
Data Byte
Low Byte
Low Byte
Byte 32
Byte 1
Byte 2
Byte 3
11 of 25
↓
LOBAT
BIT 3
RO
0
0
0
BIT 2
Seconds Alarm
Minutes Alarm
ROF
TR1
Hour Alarm
Seconds
Seconds
Minutes
Century
Minutes
Century
Day-of-Week Alarm
Month
Month
Hours
Hour
Date
Year
Date
Year
Day-of-Week
Day of Week
BIT 1
TR0
0
ALMF
EOSC
BIT 0
LSB
Event 0 Rollover
Address Pointer
Data Log RAM
Counter (ETC)
Programmable
Event Counter
Elapsed Time
FUNCTION
NV Memory
Time Stamp
RTC Alarm
Reserved
Reserved
Control
Stamp
Status
User-
RTC
Port