CDP68HC68T1(1997) 데이터 시트보기 (PDF) - Intersil

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CDP68HC68T1
(Rev.:1997)

CMOS Serial Real-Time Clock With RAM and Power Sense/Control

Intersil 

CDP68HC68T1

0

32 RAM LOCATIONS

31

32

CLOCK/CALENDAR

50

51

13 BYTES UNUSED

63

85

R = READABLE

TEST MODE

W = WRITABLE

$00

32 SECONDS

R, W $20

33 MINUTES

R, W $21

34 HOURS

R, W $22

35 DAY OF WEEK

R, W $23

36 DATE

R, W $24

37 MONTH

$1F

38 YEARS

R, W $25

R, W $26

$20

39 NOT USED

$27

40 SEC ALARM

W $28

41 MIN ALARM

$32

42 HRS ALARM

W $29

W $2A

$33

43 NOT USED

$2B

44 NOT USED

$2C

45 NOT USED

$2D

46 NOT USED

$2E

47 NOT USED

$2F

48 STATUS REGISTER

R $30

$3F

49 CONTROL REGISTER

R, W $31

$55

50 INTERRUPT CONTROL REGISTER R, W $32

FIGURE 2. ADDRESS MAP

TABLE 1. CLOCK/CALENDAR AND ALARM DATA MODES

ADDRESS LOCATION

(H)

FUNCTION

DECIMAL RANGE

BCD DATA RANGE

(NOTE 4)

BCD DATE EXAMPLE

20

Seconds

0-59

00-59

18

21

Minutes

0-59

00-59

49

22

Hours

1-12

81-92 (AM)

A3

12 Hour Mode

A1-B2 (PM)

(Note 5)

Hours

0-23

00-23

15

24 Hour Mode

23

Day of the Week

1-7

01-07

03

(Sunday = 1)

24

Day of the Month

1-31

01-31

29

(Date)

25

Month

1-12

01-12

10

Jan = 1, Dec = 12

26

Years

0-99

00-99

85

28

Alarm Seconds

0-59

00-59

18

29

Alarm Minutes

0-59

00-59

49

2A

Alarm Hours (Note 6)

1-12

01-12 (AM)

23

12 Hour Mode

21-32 (PM)

Alarm Hours

0-23

00-23

15

24 Hour Mode

NOTES:

4. Example: 3:49:18, Tuesday. Oct. 29,1985.

5. Most significant Bit, D7, is “0” for 24 hours, and “1” for 12 hour mode. Data Bit D5 is “1” for P.M. and ‘0” for A.M. in 12 hour mode.

6. Alarm hours. Data Bit D5 is “1” for P.M. and “0” for A.M. in 12 hour mode. Data Bits D7 and D6 are DON’T CARE.

5

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