Rabbit BL2020, User Manual

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User’s Manual 17
3.2 Digital I/O
3.2.1 Digital Inputs
The BL2000 has 11 digital inputs, IN0–IN10, each of which is protected over a range of
–36 V to +36 V. The inputs are factory-configured to be pulled up to +5 V, but they can
also be pulled down by moving the surface-mounted jumper at JP6 as shown in Figure 7.
Figure 7(a). BL2000 Digital Inputs [Pulled Up—JP6(1–2) connected]
Figure 7(b). BL2000 Digital Inputs [Pulled Down—JP6(2–3) connected]
JP6
10 nF
22 k W
27 k W
Rabbit 2000™
Microprocessor
Factory
Default
Vcc
1 3
GND
JP6
JP6
10 nF
22 k W
27 k W
Rabbit 2000™
Microprocessor
Vcc
1
3
GND
+5 V
JP6