Rabbit 3000 User Manual - Able

User’s Manual

T

ABLE

OF

 C

ONTENTS

Chapter 1.  Introduction

 1

1.1  Features and Specifications Rabbit 3000

..............................................................................2

1.2  Summary of Rabbit 3000 Advantages

.................................................................................6

1.3  Differences Rabbit 3000 vs. Rabbit 2000

.............................................................................7

Chapter 2.  Rabbit 3000 Design Features

 9

2.1  The Rabbit 8-bit Processor vs. Other Processors

..................................................................10

2.2  Overview of On-Chip Peripherals and Features

...................................................................11

2.2.1  5 V Tolerant Inputs  ....................................................................................................................11

2.2.2  Serial Ports  .................................................................................................................................11

2.2.3  System Clock  .............................................................................................................................12

2.2.4  32.768 kHz Oscillator Input .......................................................................................................12

2.2.5  Parallel I/O  .................................................................................................................................13

2.2.6  Slave Port  ...................................................................................................................................14

2.2.7  Auxiliary I/O Bus .......................................................................................................................15

2.2.8  Timers  ........................................................................................................................................15

2.2.9  Input Capture Channels ..............................................................................................................16

2.2.10  Quadrature Encoder Inputs  ......................................................................................................17

2.2.11  Pulse Width Modulation Outputs .............................................................................................17

2.2.12  Spread Spectrum Clock ............................................................................................................18

2.2.13  Separate Core and I/O Power Pins  ...........................................................................................18

2.3  Design Standards

..........................................................................................................18

2.3.1  Programming Port  ......................................................................................................................18

2.3.2  Standard BIOS  ...........................................................................................................................19

2.4  Dynamic C Support for the Rabbit

....................................................................................19

Chapter 3.  Details on Rabbit Microprocessor Features

 21

3.1  Processor Registers

.......................................................................................................21

3.2  Memory Mapping

.........................................................................................................23

3.2.1  Extended Code Space .................................................................................................................26

3.2.2  Separate I and D Space - Extending Data Memory  ...................................................................27

3.2.3  Using the Stack Segment for Data Storage  ................................................................................29

3.2.4  Practical Memory Considerations  ..............................................................................................30

3.3  Instruction Set Outline

...................................................................................................32

3.3.1  Load Immediate Data to a Register ............................................................................................33

3.3.2  Load or Store Data from or to a Constant Address ....................................................................33

3.3.3  Load or Store Data Using an Index Register  .............................................................................34

3.3.4  Register-to-Register Move  .........................................................................................................35

3.3.5  Register Exchanges  ....................................................................................................................35

3.3.6  Push and Pop Instructions  ..........................................................................................................36

3.3.7  16-bit Arithmetic and Logical Ops  ............................................................................................36

3.3.8  Input/Output Instructions  ...........................................................................................................39

3.4  How to Do It in Assembly Language—Tips and Tricks

........................................................40

3.4.1  Zero HL in 4 Clocks ...................................................................................................................40

3.4.2  Exchanges Not Directly Implemented  .......................................................................................40

3.4.3  Manipulation of Boolean Variables  ...........................................................................................40

3.4.4  Comparisons of Integers  ............................................................................................................41

3.4.5  Atomic Moves from Memory to I/O Space  ...............................................................................43