RabbitLink User's Manual

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 shows the mechanical dimensions for the RabbitLink.

Figure A-1. RabbitLink Dimensions

NOTE	All measurements are in inches followed by millimeters enclosed in parentheses.

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

Table A-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 contact power jack for AC adpater 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 areas around the crystal oscillator and the battery backup circuit on the RabbitLink have had the Dow Corning silicone-based 1-2620 conformal coating applied. The conformally coated areas are shown in Figure A-2. The conformal coating protects these high-impedance circuits from the effects of moisture and contaiminants over time.

Figure A-2. RabbitLink Areas Receiving Conformal Coating

Any components in the conformally coated area may be replaced using standard soldering procedures for surface-mounted components. A new conformal coating should then be applied to offer continuing protection against the effects of moisture and contaminants.

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