Rabbit Semiconductor designed and manufactures 3 microprocessors specially designed for embedded systems:

• Rabbit 2000
• Rabbit 3000
• Rabbit 4000

All the processors are low-cost low-EMI and high-performance microprocessors with external flash and RAM making the sizes flexible.  Rabbit Core Modules are an attractive option for a short time to market.  They include a Rabbit microprocessor, flash and RAM with optional ethernet on a compact plug-in PCB.

All the microprocessors are well documented with several manuals available - Getting Started Manual, User's Guide, Designer's Manual, Datasheet and Instruction Reference Manual.

Off the shelf development boards with many sample programs are also available.

Rabbit 2000

The Rabbit 2000 was the first microprocessor in the range.  Which it is the first microprocessor in the range it is still used in many Rabbit products.  The Rabbit 2000 features:

• Clock speed up to 30MHz
• Flash and RAM up to 1 Mbyte.
  
• 2.7V to 5V operating range
• 100-pin PQFP 24 x 18 x 3 mm microprocessor
• Real time clock (date/time clock) with battery backup available
  
• 40 digital I/O lines
  
• 4 serial ports including high-speed SPI interface
  
• Watchdog timer
• Industrial temperature range -40^oC to 85^oC
• Low power design
• A slave port is designed to allow the Rabbit to be a slave to another processor, which could also be another Rabbit.
• 5 x 8-bit timers and 1 x 10-bit timer
• Sleepy (32 kHz) power saving mode
  

Rabbit 2000 Microprocessor

Rabbit 3000

The Rabbit 3000 features:

• Clock speed up to 54MHz
• Flash and RAM up to 1 Mbyte
  
• 1.5–3.6 V operating range with 5 V tolerant I/O
• 55+ digital I/O lines
  
• Industrial temperature range -40^oC to 85^oC
• Real time clock (date/time clock)
• 6 serial ports including high-speed SPI interface
  
• Watchdog timer
• 128-pin LQFP 16 × 16 × 1.5mm, or TFBGA 10 × 10 × 1.2mm package
  
• EMI at extremely low levels using a clock spectrum spreader
• Processor speed and power consumption are under program control.
  
• Low power design
• A slave port is designed to allow the Rabbit to be a slave to another processor, which could also be another Rabbit.
• 10 x 8-bit timers and 1 x 10-bit timer
• Sleepy (32 kHz) and Ultra-Sleepy (16, 8, 2 kHz) power saving mode
• Asynchronous IrDA

Rabbit 3000 Microprocessor

Rabbit 4000

The Rabbit 4000 is the latest addtion to the range.  It features:

• Clock speed up to 60MHz
• Flash and RAM up to 16 Mbytes
  
• 3.3V operating voltage with 1.8V core
• Integrated 10Base-T Ethernet
• RoHS Compliant
• 40 digital I/O lines
  
• Extended industrial temperature range -55^oC to 85^oC
• Real time clock (date/time clock)
• 6 CMOS-compatible serial ports including high-speed SPI interface
  
• 2 watchdog timers
• 128-pin LQFP 16 × 16 × 1.5mm, or TFBGA 10 × 10 × 1.2mm package
  
• Low EMI using a clock spectrum spreader
  
• Low power design
• A slave port is designed to allow the Rabbit to be a slave to another processor, which could also be another Rabbit.
• 10 x 8-bit timers, 1 x 10-bit timer and 1 x 16-bit timer
• Sleepy (32 kHz) and Ultra-Sleepy (16, 8, 2 kHz) power saving mode
• 10x faster AES encryption over Rabbit 3000
• Asynchronous IrDA

Rabbit 4000 Microprocessor