7733 datasheet(19/940 Pages) RENESAS

19 / 940 page

7735 Group User’s Manual

Table of contents

xii

CHAPTER 17. APPLICATIONS

17.1 Memory expansion ............................................................................................................. 17-2

17.1.1 Memory expansion model .......................................................................................... 17-2

17.1.2 Calculation ways for timing ....................................................................................... 17-4

17.1.3 Points in memory expansion ..................................................................................... 17-7

17.1.4 Memory expansion example ................................................................................... 17-19

17.1.5 I/O expansion example ............................................................................................ 17-21

17.2 Serial I/O .......................................................................................................... 17-28 in part 1

17.3 Watchdog timer .............................................................................................. 17-41 in part 1

17.4 Power saving .................................................................................................................... 17-22

17.5 Timer B ............................................................................................................. 17-54 in part 1

CHAPTER 18. LOW VOLTAGE VERSION

18.1 Performance overview ...................................................................................................... 18-2

18.2 Pin configuration ............................................................................................................... 18-3

18.3 Functional description ...................................................................................................... 18-4

18.4 Electrical characteristics .................................................................................................. 18-5

18.4.6 Ready and Hold .......................................................................................................... 18-5

18.4.8 Memory expansion mode and microprocessor mode : with no wait .................. 18-7

18.4.9 Memory expansion mode and microprocessor mode : with wait 1 .................... 18-9

18.4.10 Memory expansion mode and microprocessor mode : with wait 0 ................ 18-11

18.5 Standard characteristics .............................................................................. 18-27 in part 1

18.6 Application ........................................................................................................................ 18-13

18.6.1 Memory expansion .................................................................................................... 18-13

18.6.2 Memory expansion example ................................................................................... 18-15

18.6.3 Ready generation circuit example ......................................................................... 18-17

CHAPTER 19. BUILT-IN PROM VERSION

19.1 EPROM mode ..................................................................................................................... 19-2

19.2 Usage precaution ........................................................................................... 19-10 in part 1

CHAPTER 20. EXTERNAL ROM VERSION

20.1 Performance overview ...................................................................................................... 20-3

20.2 Pin configuration ............................................................................................................... 20-4

20.3 Pin description ................................................................................................................... 20-5

20.4 Block description ............................................................................................................... 20-7

20.5 Memory allocation ............................................................................................................. 20-8

20.6 Processor modes ............................................................................................................. 20-11

20.7 Timer A ............................................................................................................................... 20-12

20.8 Reset ................................................................................................................................... 20-12

20.9 Electrical characteristics ................................................................................................ 20-15

20.10 Low voltage version ...................................................................................................... 20-16

20.10.1 Performance overview ............................................................................................ 20-16

20.10.2 Pin configuration ..................................................................................................... 20-17

20.10.3 Functional description ............................................................................................ 20-18

20.10.4 Electrical characteristics ........................................................................................20-18

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