101-0679 Rabbit Semiconductor, 101-0679 Datasheet - Page 89

• Manufacturer Part Number: 101-0679
• Description: KIT DEV RABBIT RCM3600 INTL
• Manufacturer: Rabbit Semiconductor
• Series: RabbitCore 3000r
• Type: MPU Moduler

Specifications of 101-0679

• Contents: RabbitCore Module, Dev. Board, Cable and Dynamic C® CD-Rom
• Processor To Be Evaluated: Rabbit 3000
• Interface Type: RS-232
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 5 V
• For Use With/related Products: RCM3600
• Lead Free Status / RoHS Status: Vendor undefined / Vendor undefined

The RCM3600 Prototyping Board comes with a 220 Ω termination resistor and two 681 Ω
bias resistors installed and enabled with jumpers across pins 1–2 and 5–6 on header JP1,
as shown in Figure B-9.
For best performance, the termination resistors in a multidrop network should be enabled
only on the end nodes of the network, but not on the intervening nodes. Jumpers on boards
whose termination resistors are not enabled may be stored across pins 1–3 and 4–6 of
header JP1.
B.4.4 Other Prototyping Board Modules
An optional LCD/keypad module is available that can be mounted on the Prototyping
Board. The signals on headers LCD1JB and LCD1JC will be available only if the
LCD/keypad module is installed. Refer to Appendix C, “LCD/Keypad Module,” for
complete information.
User’s Manual
CAUTION: Pin PB7 is connected as both switch S2 and as an external I/O bus on the
Prototyping Board. Do not use S2 when the LCD/keypad module is installed.
Figure B-9. RS-485 Termination and Bias Resistors
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