20-101-1138 Rabbit Semiconductor, 20-101-1138 Datasheet - Page 39
20-101-1138
Manufacturer Part Number
20-101-1138
Description
RCM4300 RABBITCORE
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-101-1139.pdf
(124 pages)
Specifications of 20-101-1138
Module/board Type
MPU Core Module
Product
Microcontroller Modules
Data Bus Width
8 bit
Core Processor
Rabbit 4000
Clock Speed
58.98 MHz
Interface Type
Ethernet
Flash
2 MBytes
Timers
10 x 8 bit
Operating Supply Voltage
3.3 V
Board Size
72 mm x 47 mm x 21 mm
For Use With/related Products
RCM4300
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1141
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4.3 Programming Cable
The programming cable is used to connect the programming port of the RCM4300 to a PC
serial COM port. The programming cable converts the RS-232 voltage levels used by the
PC serial port to the CMOS voltage levels used by the Rabbit 4000.
When the
PROG
connector on the programming cable is connected to the programming
port on the RCM4300, programs can be downloaded and debugged over the serial interface.
4.3.1 Changing Between Program Mode and Run Mode
The RCM4300 is automatically in Program Mode when the
connector on the pro-
PROG
gramming cable is attached, and is automatically in Run Mode when no programming
cable is attached. When the Rabbit 4000 is reset, the operating mode is determined by the
state of the SMODE pins. When the programming cable’s
connector is attached,
PROG
both the SMODE pins are pulled high, placing the Rabbit 4000 in the Program Mode.
When the programming cable’s
connector is not attached, the SMODE0 pin is
PROG
pulled low and the SMODE1 pin is high so that the Rabbit 4000 powers up in the clocked
serial bootstrap mode to load the program from the serial flash when the RCM4300 is
operating in the Run Mode.
Figure 9. Switching Between Program Mode and Run Mode
RabbitCore RCM4300 User’s Manual
39
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