Digi ConnectCore System-on-Modules Single Board Computers Development kits

RabbitCore® RCM3000 Series


Microprocessor Core Module

  • Rabbit 3000 microprocessor at 30 MHz
  • Up to 512K Flash/512K SRAM
  • 52 digital I/O and 6 serial ports (IrDA, HDLC, asynch, SPI)
  • 3.3V operation, low power “sleepy” modes (< 2mA)

The RabbitCore RCM3000 series, featuring the Rabbit® 3000 microprocessor, boasts powerful features and integrated 10Base-T Ethernet to simplify integration. When paired with Dynamic C®, the RCM3000 series allows engineers to add device intelligence and I/O control for many of today’s embedded designs. Its small form factor and low-power modes make the RCM3000 series perfect for remote device applications. The RCM3000 series is pin-compatible with the RCM3100 series, facilitating cost-effective implementation of both Ethernet and non-Ethernet systems.

Rabbit hardware and Dynamic C are designed in a complementary fashion for maximum performance and ease of use in embedded systems. The additional software components in Dynamic C allow you to add functionality for embedded application customization.

The RCM3000 RabbitCore® is our powerful and feature-packed 10Base-T Ethernet microprocessor core module. Powered by the Rabbit® 3000—the "EMI-Free microprocessor"—the RCM3000 is the ideal option for designers who want to rapidly develop and implement embedded systems with fully integrated Ethernet connectivity.

Measuring only 2.73" × 1.85" (69 × 47 mm), the RCM3000 operates at 3.3 V (with 5 V-tolerant I/O) and features 6 serial ports. Built-in low-EMI features, including a clock spectrum spreader, help designers eliminate the kind of emissions-related problems that frequently derail tight development schedules.

Available in two models, the RCM3000 is equipped with 10Base-T Ethernet, up to 512K each of Flash and SRAM, quadrature encoder inputs, PWM outputs, and pulse capture and measurement capabilities. Two 34-pin connection headers provide 52 digital I/O shared with the 6 serial ports and alternate I/O features. The integrated Ethernet port allows instant local or worldwide connectivity. (The RCM3000 is pin compatible with the non-Ethernet RCM3100, facilitating cost-effective implementation of both Ethernet and non-Ethernet systems).

The RCM3000 features a battery-backable real-time clock, glueless memory and I/O interfacing, and low power "sleepy" modes (<2mA). A fully enabled slave port permits easy master-slave interfacing with another processor-based system, and an alternate I/O bus can be configured for 8 data lines and 6 address lines (shared with parallel I/O). The Rabbit 3000 processor's compact, C-friendly instruction set and high clock speeds produce exceptionally fast results for math, logic, and I/O.

Key Features
  • 3.3 V operation
  • Powerful Rabbit 3000 microprocessor
  • Low-EMI (typically <10 dB µV/m @ 3 m)
  • Built-in Ethernet for simplified connectivity
  • Up to 512K Flash/512K SRAM
  • 52 digital I/O
  • 6 serial ports (IrDA, SDLC/HDLC, Async, SPI)
  • Low power "sleepy" modes (<2mA)
Designing with RabbitCores

The RabbitCore family of microprocessor core modules is designed to facilitate rapid development and implementation of embedded systems. RabbitCores are powered by high-performance 8-bit Rabbit microprocessors with extensive integrated features and a C-friendly instruction set designed for use with the Dynamic C® development system. The RabbitCore mounts on a user-designed motherboard and acts as the controlling microprocessor for the user's system. Small in size but packed with powerful features, these core modules give designers a complete package for control and communication.

The integrated Ethernet port frees designers from the limitations of serial-port communications and control and permits instant local or worldwide connectivity using low-cost networking hardware. Embedded systems using the Ethernet RabbitCore module can be controlled and monitored (as well as programmed and debugged when using appropriate accessory hardware) across any network or the Internet.


Specifications RCM3000 RCM3010
Microprocessor Rabbit® 3000 @ 30 MHz
EMI Reduction Spectrum spreader for reduced EMI (radiated emissions)
Ethernet Port 10Base-T interface, RJ-45, 2 LEDs
Flash Memory 512K (2 × 256K) 256K
SRAM 512K 128K
Backup Battery Connection for user-supplied backup battery (to support RTC and SRAM)
General Purpose I/O 52 parallel digital I/O lines:
  • 44 configurable I/O
  • 4 fixed inputs
  • 4 fixed outputs
Additional Digital Inputs 2 startup mode, reset in
Additional Digital Outputs Status, rest out
Auxiliary I/O Bus 8 data lines and 6 address lines (shared with I/O) plus I/O read/write
Serial Ports 6 shared high-speed, CMOS-compatible ports:
  • 6 configurable as asynchronous (with IrDA), 4 as clocked serial (SPI), and 2 as SDLC/HDLC (with IrDA)
  • 1 asynchronous serial port dedicated for programming
  • Support for MIR/SIR IrDA transceiver
Serial Rate Maximum asynchronous baud rate = CLK/8
Slave Interface A slave port allows the RCM3000 to be used as a master or as an intelligent peripheral device with Rabbit-based or any other type of processor
Real-Time Clock Yes
Timers Ten 8-bit timers (6 cascadable from the first), one 10-bit timer with 2 match registers
Watchdog/Supervisor Yes
Pulse/Width Modulators 10-bit free-running counter and four pulse-width registers
Input Capture 2-channel input capture can be used to time input signals from various port pins
Quadrature Decoder 2-channel quadrature decoder accepts inputs from external incremental encoder modules
Power 3.15V to 3.45VDC 150 mA @ 3.3V
Operating Temperature 0° C to 70° C
Humidity 5% to 95%, non-condensing
(for connection to headers J4 and J5)
Two 2 × 17, 2 mm pitch
Board Size 1.850” × 2.725” × 0.86” (47 mm × 69 mm × 22 mm)
Product Warranty 1 year

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