<< Previous | Index | Next >>

Appendix A. Specifications

Appendix A provides the specifications for the RabbitLink and describes the conformal coating.

A.1 Electrical and Mechanical Specifications

Figure A.1-1 shows the mechanical dimensions for the RabbitLink. All measurements are in inches followed by millimeters enclosed in parentheses.

Figure A.1-1 RabbitLink Dimensions

Table A.1-1 lists the electrical, mechanical, and environmental specifications for the RabbitLink.

Table A.1-1. RabbitLink Specifications 

Parameter	Specification
Board Size	3.43" × 4.15" × 0.80" (87 mm × 105 mm × 20 mm)
Connectors	one RJ-45 (Ethernet) two 2 × 5, 2 mm pitch (serial programming) one 2 × 5, 1.27 mm pitch (serial programming) one contact power jack for AC adapter one 2-terminal screw connector (18 to 26 AWG wire ) for wired-in power supply
Ethernet Interface	Direct connection to 10BaseT Ethernet networks via RJ-45 connection
Temperature	-40°C to +70°C
Humidity	5% to 95%, noncondensing
External Input Voltage	9 V to 40 V DC
Current	44 mA at 24 V, 84 mA at 12 V (typical)
Onboard Voltage Regulator	Surface-mount switching regulator sources 5 V at 1 A
Microprocessor	Rabbit 2000TM
Clock	22.1 MHz
SRAM	128K, surface mount
Flash EPROM	256K for program plus 256K for data
Serial Ports	2 CMOS-compatible serial programming ports
Serial Rate	Maximum asynchronous 345,600 bps Maximum synchronous 142,700 bps
Watchdog/Supervisor	Yes
Time/Date Clock	Yes
Backup Battery	No

A.2 Conformal Coating

The area around the crystal oscillator and the battery backup circuit on the RabbitLink has had the Dow Corning silicone-based 1-2620 conformal coating applied. The conformally coated area is shown in Figure A.2-1. The conformal coating protects these high-impedance circuits from the effects of moisture and contaminants over time.

Figure A.2-1 RabbitLink Areas Receiving Conformal Coating

Any component in the conformally coated area may be replaced using standard soldering procedures for surface-mount components. Apply a new conformal coating afterwards for continued protection against the effects of moisture and contaminants.

NOTE	For more information on conformal coatings, refer to Rabbit Semiconductor Technical Note 303, "Conformal Coatings."