20-151-0178 Rabbit Semiconductor, 20-151-0178 Datasheet - Page 144

• Manufacturer Part Number: 20-151-0178
• Description: CABLE CONVERTER RS-232 TO USB
• Manufacturer: Rabbit Semiconductor

Specifications of 20-151-0178

• Accessory Type: USB to RS232 Adapter
• Product: Microcontroller Accessories
• For Use With/related Products: Rabbit-based Boards
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 20-151-0178; 316-1181

C.1.2 Digital Input Connections
To run the digital input sample programs, you must connect at least one demo board switch to a digital
input on the RabbitFLEX board. There are four demo board switches, so you may connect up to four digi-
tal inputs.
The 4.4 V threshold digital inputs may or may not work reliably since the switching threshold it so close to
5 V. The bidirectional logic must be in an input state, which is one of the things that is done during the
board initialization function (brdInit()).
Connect the green wire of the cable assembly that corresponds to the selected digital input to SW1, SW2,
SW3 or SW4 on screw terminal header J1 on the demo board. Connect the polarized connector of the
cable assembly to the connector that has the digital input(s) you selected on the RabbitFLEX board.
Figure C.2
bly. In this case, the polarized connector of the cable assembly should be connected to one of the connec-
tors on the RabbitFLEX SBC40 that has digital inputs on pins 2, 4, 6 and 8.
138
shows the demo board pushbutton switches connected to pins 2, 4, 6 and 8 of the cable assem-
Figure C.2 Demo Board Connected to Pins 2, 4, 6, 8 on Cable Assembly
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