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Rabbit 2000 Microprocessor

Rabbit Semiconductor

2932 Spafford Street

Davis, California 95616-6800

USA

Telephone: (530) 757-8400

Fax: (530) 757-8402

www.rabbitsemiconductor.com

Rabbit 2000 Microprocessor User’s Manual

Part Number 019-0069 • 041018–M • Printed in U.S.A.

Rabbit Semiconductor reserves the right to make changes and

improvements to its products without providing notice.

Trademarks

Rabbit and Rabbit 2000 are registered trademarks of Rabbit Semiconductor.

Dynamic C is a registered trademark of Z-World, Inc.

Main Page

Default Chapter3
- Table of Contents3
Chapter 1. Introduction7
- Features and Specifications7
- Summary of Rabbit Advantages11
Chapter 2. Rabbit Design Features13
- The Rabbit 8-Bit Processor Vs. 16-Bit and 32-Bit Processors14
- Overview of On-Chip Peripherals14
- Design Standards18
  - Programming Port18
  - Standard BIOS18
- Dynamic C Support for the Rabbit18
Chapter 3 . Details on Rabbit19
- Processor Registers19
- Memory Mapping21
- Instruction Set Outline28
- How to Do It in Assembly Language-Tips and Tricks37
- Interrupt Structure41
Chapter 4. Rabbit Capabilities47
- Precisely Timed Output Pulses47
  - Pulse Width Modulation to Reduce Relay Power49
- Open-Drain Outputs Used for Key Scan50
- Cold Boot51
- The Slave Port52
  - Slave Rabbit as a Protocol UART53
Chapter 5. Pin Assignments and Functions55
- Package Schematic and Pinout55
- Package Mechanical Dimensions56
- Rabbit Pin Descriptions58
- Bus Timing64
- Description of Pins with Alternate Functions65
- DC Characteristics67
  - Volts68
  - Volts69
- I/O Buffer Sourcing and Sinking Limit70
Chapter 6. Rabbit Internal I/O Registers71
- Default Values for All the Peripheral Control Registers71
Chapter 7. Miscellaneous I/O Functions77
- Processor Identification77
- Rabbit Oscillators and Clocks78
- Clock Doubler80
- Controlling Power Consumption82
- Output Pins CLK, STATUS, /WDTOUT, /BUFEN83
- Time/Date Clock (Real-Time Clock)84
- Watchdog Timer86
- System Reset88
- Rabbit Interrupt Structure90
  - External Interrupts92
  - Interrupt Vectors: INT0 - Eir,0X00/Int1 - Eir,0X0893
- Bootstrap Operation94
Chapter 8. Memory Mapping and Interface97
- Memory-Mapping Unit97
- Memory Interface Unit99
- Memory Control Unit Registers100
- Allocation of Extended Code and Data102
- How Compiler Compiles to Memory103
Chapter 9. Parallel Ports105
- Parallel Port a106
- Parallel Port B107
- Parallel Port C108
- Parallel Port D109
- Parallel Port E112
Chapter 10. I/O Bank Control Registers115
Chapter 11. Timers117
- Timer a118
  - Timer a I/O Registers119
  - Practical Use of Timer a120
- Timer B121
  - Using Timer B123
Chapter 12. Rabbit Serial Ports125
- Serial Port Register Layout126
- Serial Port Interrupt129
- Transmit Serial Data Timing130
- Receive Serial Data Timing130
- Clocked Serial Ports131
- Clocked Serial Timing134
  - Clocked Serial Timing with Internal Clock134
  - Clocked Serial Timing with External Clock134
- Serial Port Software Suggestions135
Chapter 13. Rabbit Slave Port143
- Hardware Design of Slave Port Interconnection149
- Slave Port Registers149
- Applications and Communications Protocols for Slaves151
  - Slave Applications151
  - Master-Slave Messaging Protocol152
Chapter 14. Rabbit 2000 Clocks155
- Low-Power Design156
- Clock Spectrum Spreader Module156
Chapter 15. AC Timing Specifications157
- Memory Access and I/O Read/Write Times160
- Current Consumption168
Chapter 16. Rabbit BIOS and Virtual Driver171
- The BIOS171
  - BIOS Services171
  - BIOS Assumptions172
- Virtual Driver172
  - Periodic Interrupt172
  - Watchdog Timer Support172
Chapter 17. Other Rabbit Software175
- Power Management Support175
- Reading and Writing I/O Registers176
  - Using Assembly Language176
  - Using Library Functions176
- Shadow Registers177
- Timer and Clock Usage178
Chapter 18. Rabbit Instructions181
- Load Immediate Data184
- Load & Store to Immediate Address184
- 8-Bit Indexed Load and Store184
- 16-Bit Indexed Loads and Stores184
- 16-Bit Load and Store 20-Bit Address185
- Register to Register Moves185
- Exchange Instructions186
- Stack Manipulation Instructions186
- 16-Bit Arithmetic and Logical Ops186
- 8-Bit Arithmetic and Logical Ops187
- 8-Bit Bit Set, Reset and Test188
- 8-Bit Increment and Decrement188
- 8-Bit Fast a Register Operations189
- 8-Bit Shifts and Rotates189
- Instruction Prefixes190
- Block Move Instructions190
- Control Instructions - Jumps and Calls191
- Miscellaneous Instructions191
- Privileged Instructions192
Chapter 19. Differences Rabbit Vs. Z80/Z180 Instructions193
Chapter 20. Instructions in Alphabetical Order with Binary Encoding195
Appendix203
- The Rabbit Programming Port203
- Use of the Programming Port as a Diagnostic/Setup Port204
- Alternate Programming Port204
- Suggested Rabbit Crystal Frequencies205
Appendix207
- Rabbit 2000 Revisions207
- Discussion of Fixes and Improvements209
Notice to Users225
Index227

Rabbit 2000 - Page 2

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