20-101-1067 Rabbit Semiconductor, 20-101-1067 Datasheet - Page 39

• Manufacturer Part Number: 20-101-1067
• Description: MODULE RABBITCORE RCM3305
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-1067

• Module/board Type: MPU Core Module
• Product: Microcontroller Modules
• Flash: 512 KBytes
• Timers: 10 bit
• Operating Supply Voltage: 3.15 to 3.45 V
• Board Size: 47 mm x 69 mm x 22 mm
• For Use With/related Products: RCM3305
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 316-1113

4.3 Programming Cable
The programming cable is used to connect the programming port of the RCM3305/
RCM3315 to a PC serial COM port. The programming cable converts the RS-232 voltage
levels used by the PC serail port to the CMOS voltage levels used by the Rabbit 3000.
When the
connector on the programming cable is connected to the RCM3305/
PROG
RCM3315 programming port, programs can be downloaded and debugged over the serial
interface.
The
connector of the programming cable may be used on header J1 of the RCM3305/
DIAG
RCM3315 with the RCM3305/RCM3315 operating in the Run Mode. This allows the
programming port to be used as a regular serial port.
4.3.1 Changing Between Program Mode and Run Mode
The RCM3305/RCM3315 is automatically in Program Mode when the
PROG
connector
on the programming cable is attached, and is automatically in Run Mode when no pro-
gramming cable is attached. When the Rabbit 3000 is reset, the operating mode is deter-
mined by the state of the SMODE pins. When the programming cable’s
connector
PROG
is attached, the SMODE pins are pulled high, placing the Rabbit 3000 in the Program
Mode. When the programming cable’s
connector is not attached, the SMODE pins
PROG
are pulled low, causing the Rabbit 3000 to operate in the Run Mode.
Figure 8. Switching Between Program Mode and Run Mode
User’s Manual
33