RCM2000 datasheet(4/80 Pages) DIGI

4 / 80 page

RabbitCore RCM2000

4.5 Other Hardware .................................................................................................................................. 32

4.5.1 Clock Doubler ............................................................................................................................ 32

4.5.2 Spectrum Spreader...................................................................................................................... 33

4.6 Memory .............................................................................................................................................. 34

4.6.1 SRAM......................................................................................................................................... 34

4.6.2 Flash EPROM............................................................................................................................. 34

4.6.3 Dynamic C BIOS Source Files................................................................................................... 34

Chapter 5. Software Reference

5.1 More About Dynamic C ..................................................................................................................... 35

5.1.1 Using Dynamic C ....................................................................................................................... 36

5.2 I/O....................................................................................................................................................... 38

5.2.1 PCLK Output.............................................................................................................................. 38

5.3 Serial Communication Drivers........................................................................................................... 39

5.4 Upgrading Dynamic C ....................................................................................................................... 40

5.4.1 Extras .......................................................................................................................................... 40

Appendix A. Specifications

A.1 Electrical and Mechanical Specifications.......................................................................................... 42

A.1.1 Headers ...................................................................................................................................... 45

A.2 Bus Loading ...................................................................................................................................... 46

A.3 Rabbit 2000 DC Characteristics ........................................................................................................ 48

A.4 I/O Buffer Sourcing and Sinking Limit............................................................................................. 49

A.5 Conformal Coating ............................................................................................................................ 50

A.6 Jumper Configurations ...................................................................................................................... 51

Appendix B. Prototyping Board

B.1 Overview of the Prototyping Board................................................................................................... 54

B.2 Mechanical Dimensions and Layout ................................................................................................. 55

B.3 Power Supply..................................................................................................................................... 57

B.4 Using the Prototyping Board ............................................................................................................. 58

B.4.1 Adding Other Components ........................................................................................................ 61

Appendix C. Power Management

C.1 Power Supplies .................................................................................................................................. 63

C.1.1 Batteries and External Battery Connections .............................................................................. 63

C.1.2 Battery-Backup Circuit .............................................................................................................. 64

C.1.3 Power to VRAM Switch ............................................................................................................ 65

C.1.4 Reset Generator.......................................................................................................................... 65

C.2 Chip Select Circuit............................................................................................................................. 66

Appendix D. Sample Circuits

D.1 RS-232/RS-485 Serial Communication ............................................................................................ 68

D.2 Keypad and LCD Connections.......................................................................................................... 69

D.3 LCD Connections .............................................................................................................................. 70

D.4 External Memory............................................................................................................................... 71

D.5 Simple D/A Converter....................................................................................................................... 72

Index

Schematics

RCM2000 Datasheet(PDF) 4 Page - Digi International Inc.

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