CDP68HC68T1W INTERSIL [Intersil Corporation], CDP68HC68T1W Datasheet - Page 6

• Manufacturer Part Number: CDP68HC68T1W
• Description: CMOS Serial Real-Time Clock With RAM and Power Sense/Control
• Manufacturer: INTERSIL [Intersil Corporation]

Programmers Model - Clock Registers
NOTE: X = Don’t care writes, X = 0 when read.
HEX ADDRESS
RAM DATA BYTE
2A
20
21
22
23
24
25
26
31
32
28
29
30
DB7
X
7
12
HR
24
X
7
7
TENS 0-5
TENS 0-5
TENS 0-3
TENS 0-1
TENS 0-9
X
X
6
TENS 0-5
TENS 0-5
X
6
6
WRITE ONLY REGISTERS
WRITE/READ REGISTERS
READ ONLY REGISTERS
HEX ADDRESS 00-1F
D7
PM/AM
TENS 0-2
7
TENS 0-2
5
PM/AM
X
5
5
CDP68HC68T1
D6
4
X
4
4
6
X
3
3
3
D5
5
6
UNITS 0-9
UNITS 0-9
UNITS 0-9
UNITS 0-9
UNITS 0-9
UNITS 0-9
UNITS 0-9
UNITS 0-9
UNITS 0-9
2
2
2
BIT
UNITS 1-7
D4
4
1
1
1
D3
DB0
0
0
0
3
D2
2
DAY OF WK (01-07) SUNDAY = 1
ALARM HOURS (01-12 OR 00-23)
DB7, 1 = 12 HR., 0 = 24 HR.
PLUS AM/PM IN 12 HR. MODE
HOURS (01-12 OR 00-23
STATUS
ALARM SECONDS (00-59)
ALARM MINUTES (00-59)
DB = 1 PM, 0 = AM
SECONDS (00-59)
MONTH (01-12) JAN = 1
MINUTES (00-59)
DAY OF MONTH
D1
1
YEARS (00-99)
PM = 1, AM = 0
INTERRUPT
DATE
CONTROL
DEC = 12
D0
NAME
0
01-28
29
30
31