DS17285(1998) View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated

Part Name

Description

Manufacturer

DS17285
(Rev.:1998)

3 Volt/5 Volt Real Time Clock

Dallas Semiconductor -> Maxim Integrated 

DS17285/DS17287 EXTENDED REGISTER BANK DEFINITION Figure 4

BANK 0

MSB

DV0 = 0

LSB

00

TIMEKEEPING AND CONTROL

OD

0E

50 BYTES–USER RAM

3F

64 BYTES–USER RAM

7F

BANK 1

MSB

DV0 = 1

LSB

00

TIMEKEEPING AND CONTROL

OD

0E

50 BYTES–USER RAM

3F

40

MODEL NUMBER BYTE

41 1ST BYTE SERIAL NUMBER

42 2ND BYTE SERIAL NUMBER

43 3RD BYTE SERIAL NUMBER

44 4TH BYTE SERIAL NUMBER

45 5TH BYTE SERIAL NUMBER

46 6TH BYTE SERIAL NUMBER

47

CRC BYTE

48

CENTURY BYTE

49

DATE ALARM

4A EXTENDED CONTROL REG 4A

4B EXTENDED CONTROL REG 4B

4C

RESERVED

4D

RESERVED

4E

RTC ADDRESS – 2

4F

RTC ADDRESS – 3

50 EXTENDED RAM ADDR–LSB

51 EXTENDED RAM ADDR–MSB

52

RESERVED

53 EXTENDED RAM DATA PORT

54

RESERVED

55

RESERVED

56

RESERVED

57

RESERVED

58

RESERVED

59

RESERVED

5A

RESERVED

5B

RESERVED

5C

RESERVED

5D

RESERVED

5E

RTC WRITE COUNTER

5F

RESERVED

67

RESERVED

7F

DS17285/DS17287

EXTENDED

RAM

2K X 8

030598 13/32

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