101-0851 Rabbit Semiconductor, 101-0851 Datasheet - Page 39
101-0851
Manufacturer Part Number
101-0851
Description
COMPUTER SNGLBD BL2110 FRCTN512K
Manufacturer
Rabbit Semiconductor
Datasheet
1.101-0464.pdf
(134 pages)
Specifications of 101-0851
Module/board Type
Single Board Computer Module
For Use With/related Products
BL2110
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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3.9 Other Hardware
3.9.1 External Interrupts
The BL2100 is already configured to support external interrupts on pin 11 of screw-terminal
header J11. The external interrupt circuit is shown in Figure 22.
W
Figure 22. Use of Rabbit 2000 External Interrupt
In addition to its primary use as an external interrupt, pin 11 of screw-terminal header J11
may also be used as a CMOS-level digital input or output, or to generate a PWM signal.
When using pin 11 as a CMOS-level digital input or output, use the standard Rabbit 2000
register function configuration for PE5 (on Parallel Port E) to set this pin up for your
intended use. Be aware that there is no provision for protection against voltage spikes
while PE5 is pulled up to Vcc with a 27 k pull-up resistor.
The sample program PWM.C in the Dynamic C SAMPLES/BL2100 directory illustrates
how to use pin 11 of screw-terminal header J11 to generate a PWM signal.
User’s Manual
33
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