20-101-0356 Rabbit Semiconductor, 20-101-0356 Datasheet - Page 79

• Manufacturer Part Number: 20-101-0356
• Description: COMPUTER SINGLE-BOARD BL1800
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-0356

• Module/board Type: Single Board Computer Module
• Product: Modules
• Data Bus Width: 8 bit
• Processor Type: Rabbit 2000
• Sram: 128 KB
• Flash: 256 KB
• Timers: 8 bit, 10 bit
• Number Of I/os: 14
• Backup Battery: 3 V Lithium Coin Type
• Operating Voltage: 8 V to 40 V
• Power Consumption: 1.2 W
• Board Size: 89 mm x 64 mm x 19 mm
• Description/function: Computer Module
• For Use With/related Products: BL1800
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 316-1079

The thermistor has a nominal room-temperature
resistance of about 10 kΩ, which drops to about
W
6 kΩ at 40°C. Once you solder the thermistor onto
+
the RT1 pads (see Figure B-5) on the Prototyping
Board, the A/D converter readings on AD0 will
change with temperature.
If the 10 kΩ potentiometer is removed, the change
in A/D converter readings with temperature will be
larger.
Figure B-5. Thermistor and
Potentiometer Locations
The LEDs can be mounted in positions DS5–DS8,
shown in Figure B-6, to display the complete status
for Parallel Port A.
The serial cable included in the parts bag can be
used to connect the Jackrabbit’s RS-232 outputs
from header J1 on the Prototyping Board to an
available PC serial port.
Unlike the CMOS-level signals on header J3, the
programming port on the Jackrabbit board, the sig-
nals on header J1 on the Prototyping Board are full
RS-232 level signals without needing the CMOS to
RS-232 converter that is present in the program-
ming cable. The RS-232 level signals are processed
Figure B-6. LED Location
via the MAX232 transceiver chip, U4, on the Jack-
rabbit board to Serial Ports B and C of the Rabbit
2000. The CMOS-level signals on the program-
ming port are connected to Serial Port A.
User’s Manual
75