101-1226 Rabbit Semiconductor, 101-1226 Datasheet - Page 94
101-1226
Manufacturer Part Number
101-1226
Description
RCM3900 DEV KIT UNIVERSAL
Manufacturer
Rabbit Semiconductor
Series
RabbitCore 3900r
Type
MPU Moduler
Datasheet
1.20-101-1196.pdf
(168 pages)
Specifications of 101-1226
Contents
RabbitCore Module, Dev. Board, AC Adapter, Cable and Dynamic C® CD-Rom
For Use With/related Products
RCM3900
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1137
- Current page: 94 of 168
- Download datasheet (3Mb)
B.4.2 Digital I/O
B.4.2.1 Digital Inputs
The Prototyping Board has four digital inputs, IN0–IN3, each of which is protected over a
range of –36 V to +36 V. The inputs are pulled up to +3.3 V as shown in Figure B-5.
W
W
Figure B-5. Prototyping Board Digital Inputs
The four quadrature decoder inputs on screw-terminal header J5 may be used as inputs
IN4–IN7. To use the PF0 signal from the Rabbit microprocessor, which goes to QD1B,
remember to reconfigure the jumper on header JP3 to jumper pins 1–2.
The actual switching threshold is between 0.9 V and 2.3 V. Anything below this value is a
logic 0, and anything above is a logic 1
.
The digital inputs are each fully protected over a range of -36 V to +36 V, and can handle
short spikes of ±40 V.
RabbitCore RCM3900 User’s Manual
94
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