Maxim DS87C530 manuals

Maxim DS87C530 User's Guide (45 pages)

Brand: Maxim | Category: Wall clocks | Size: 0.63 MB |

English

Table of contents

DS87C530/DS83C530

1

ORDERING INFORMATION

2

DETAILED DESCRIPTION

3

PIN DESCRIPTION

4

PIN DESCRIPTION (continued)

5

COMPATIBILITY

7

PERFORMANCE OVERVIEW

7

INSTRUCTION SET SUMMARY

7

SPECIAL FUNCTION REGISTERS

8

SM0/FE_0

9

SM0/FE_1

9

CP/ RL2

9

NONVOLATILE FUNCTIONS

10

REAL-TIME CLOCK

10

NONVOLATILE RAM

11

CRYSTAL AND BACKUP SOURCES

11

Timekeeping Crystal

11

Backup Energy Source

12

IMPORTANT APPLICATION NOTE

12

MEMORY RESOURCES

12

OPERATIONAL CONSIDERATION

13

PROGRAM MEMORY ACCESS

13

DATA MEMORY ACCESS

14

STRETCH MEMORY CYCLE

15

DUAL DATA POINTER

16

POWER MANAGEMENT

17

POWER MANAGEMENT MODE (PMM)

17

CRYSTAL-LESS PMM

18

PMM OPERATION

18

Clock Divider

18

Switchback

19

Crystal/Ring Operation

20

IDLE MODE

23

STOP MODE ENHANCEMENTS

23

EMI REDUCTION

24

PERIPHERAL OVERVIEW

25

SERIAL PORTS

25

TIMER RATE CONTROL

25

POWER-FAIL RESET

25

POWER-FAIL INTERRUPT

25

WATCHDOG TIMER

26

INTERRUPTS

27

EPROM PROGRAMMING

28

PROGRAMMING PROCEDURE

28

DS87C530 SECURITY OPTIONS

29

Lock Bits

29

Encryption Array

29

Other EPROM Options

29

DS87C530 Signature

29

30 of 45

30

SECURITY OPTIONS

31

DS83C530 ROM Verification

32

DS83C530 Signature

32

ABSOLUTE MAXIMUM RATINGS

33

RD Low to Address Float

36

EXPLANATION OF AC SYMBOLS

38

DATA MEMORY WRITE CYCLE

40

EXTERNAL CLOCK DRIVE

41

SERIAL PORT MODE 0 TIMING

42

POWER-CYCLE TIMING

43

PACKAGE INFORMATION

44

DATA SHEET REVISION SUMMARY

45

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