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2.2 Digital Inputs/Outputs
2.2.1 Digital Inputs
The Jackrabbit has six CMOS-level digital inputs, PB0–PB5, each of which is pulled up to
+5 V as shown in Figure 3. The BL1820, which does not have RS-485, has one additional
CMOS-level digital input, PC1.
GND
The actual switching threshold is approximately 2.40 V. Anything below this value is a
logic 0, and anything above is a logic 1
NOTE: Since the voltage limits on the inputs to the Rabbit 2000 microprocessor are 0 to
5.5 V DC, the end user must ensure that the voltage applied to any I/O pin is within
these limits.
User's Manual
Vcc
47 kW
Figure 3. Digital Inputs
.
Rabbit 2000 ™
Microprocessor
9
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