20-101-1154 Rabbit Semiconductor, 20-101-1154 Datasheet - Page 39
20-101-1154
Manufacturer Part Number
20-101-1154
Description
MODULE RCM4120 RABBITCORE
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-101-1093.pdf
(112 pages)
Specifications of 20-101-1154
Module/board Type
MPU Core Module
Product
Microcontroller Modules
Core Processor
Rabbit 4000
Flash
512 KBytes
Operating Supply Voltage
3 to 3.6 V
Board Size
48 mm x 36 mm x 12 mm
For Use With/related Products
RCM4120
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1122
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4.2.2 Programming Port
The RCM4100 series of modules is programmed via the 10-pin header labeled J1. The
programming port uses the Rabbit 4000’s Serial Port A for communication. Dynamic C
uses the programming port to download and debug programs.
Serial Port A is also used for the following operations.
• Cold-boot the Rabbit 4000 on the RCM4100 series after a reset.
• Fast copy designated portions of flash memory from one Rabbit-based board (the
master) to another (the slave) using the Rabbit Cloning Board.
Alternate Uses of the Programming Port
All three clocked Serial Port A signals are available as
• a synchronous serial port
• an asynchronous serial port, with the clock line usable as a general CMOS I/O pin
The programming port may also be used as a serial port via the
connector on the
DIAG
programming cable.
In addition to Serial Port A, the Rabbit 4000 startup-mode (SMODE0, SMODE1), status,
and reset pins are available on the programming port.
The two startup mode pins determine what happens after a reset—the Rabbit 4000 is
either cold-booted or the program begins executing at address 0x0000.
The status pin is used by Dynamic C to determine whether a Rabbit microprocessor is
present. The status output has three different programmable functions:
1. It can be driven low on the first op code fetch cycle.
2. It can be driven low during an interrupt acknowledge cycle.
3. It can also serve as a general-purpose output.
Since the status pin is not used by the system once a program has been downloaded and is
running, the status pin can then be used as a general-purpose CMOS output.
The reset pin is an external input that is used to reset the Rabbit 4000.
Refer to the
for more information.
Rabbit 4000 Microprocessor User’s Manual
User’s Manual
35
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