101-0558 Rabbit Semiconductor, 101-0558 Datasheet - Page 24

• Manufacturer Part Number: 101-0558
• Description: COMPUTER SNG BD BL1800 512K SRAM
• Manufacturer: Rabbit Semiconductor

Specifications of 101-0558

• Module/board Type: Single Board Computer Module
• For Use With/related Products: BL1800
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

HV3 can also be reconfigured as a sinking output. To do so, remove the 0 Ω surface-
mounted resistor R56, and solder on a 0 Ω surface-mounted resistor or jumper wire at
R55. If you plan to drive inductive loads, add a diode at D21. Figure 8 shows the location
of these components.
Figure 8. Changing HV3 to a Sinking Output
3.2.3 Bidirectional I/O
The Jackrabbit has 14 CMOS-level bidirectional I/O: PA0–PA7, PD0, PD3, PD6–PD7,
and PE4–PE5. The BL1820, which does not have RS-485, has one additional bidirectional
I/O, PD5.
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Jackrabbit (BL1800)