101-0570 Rabbit Semiconductor, 101-0570 Datasheet - Page 39

• Manufacturer Part Number: 101-0570
• Description: COMPUTER SNGLBD BL2120 FRCTNLOCK
• Manufacturer: Rabbit Semiconductor

Specifications of 101-0570

• Module/board Type: Single Board Computer Module
• Product: Modules
• Data Bus Width: 12 bit
• Processor Type: Rabbit 2000
• Sram: 128 KB
• Flash: 256 KB
• Timers: 8 bit
• Number Of I/os: 40
• Backup Battery: 3 V Lithium Coin Type
• Operating Voltage: 36 V
• Power Consumption: 1.5 W
• Board Size: 105 mm x 87 mm x 24 mm
• Description/function: Computer Module
• Ram: 512 KB
• For Use With/related Products: BL2120
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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