20-101-0356 Rabbit Semiconductor, 20-101-0356 Datasheet - Page 36

• 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

3.6 Programming Cable
The programming cable is used to connect the Jackrabbit’s programming port to a PC serial
COM port. The programming cable converts the RS-232 voltage levels used by the PC
serial port to the TTL voltage levels used by the Rabbit 2000.
When the
connector on the programming cable is connected to the Jackrabbit’s
PROG
programming header, programs can be downloaded and debugged over the serial interface.
The
connector of the programming cable may be used on the Jackrabbit’s program-
DIAG
ming header with the Jackrabbit operating in the Run Mode. This allows the programming
port to be used as a regular serial port.
3.6.1 Changing Between Program Mode and Run Mode
The Jackrabbit is automatically in Program Mode when the
connector on the pro-
PROG
gramming cable is attached to the Jackrabbit, and is automatically in Run Mode when no
programming cable is attached. When the Rabbit 2000 is reset, the operating mode is
determined by the status of the SMODE pins. When the programming cable’s
PROG
connector is attached, the SMODE pins are pulled high, placing the Rabbit 2000 in the
Program Mode. When the programming cable’s
PROG
connector is not attached, the
SMODE pins are pulled low, causing the Rabbit 2000 to operate in the Run Mode.
Figure 13. Jackrabbit Program Mode and Run Mode Setup
A program “runs” in either mode, but can only be downloaded and debugged when the
Jackrabbit is in the Program Mode.
Refer to the
for more information on the pro-
Rabbit 2000 Microprocessor User’s Manual
gramming port and the programming cable.
32
Jackrabbit (BL1800)