2
RabbitCore RCM3750
•
10/100Base-T RJ-45 Ethernet port
•
512K flash memory and 512K SRAM (options for 256K flash memory and 128K SRAM)
•
1 Mbyte serial flash memory, which is required to run the optional Dynamic C FAT file
system
•
Real-time clock
•
Watchdog supervisor
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Provision for customer-supplied backup battery via connections on header J1
•
10-bit free-running PWM counter and four pulse-width registers
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Two-channel Input Capture can be used to time input signals from various port pins
•
Two-channel Quadrature Decoder accepts inputs from external incremental encoder
modules
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Four available 3.3 V CMOS-compatible serial ports: maximum asynchronous baud rate
of 2.76 Mbps. Three ports are configurable as a clocked serial port (SPI), and one port
is configurable as an HDLC serial port. Shared connections to the Rabbit microproces-
sor make a second HDLC serial port available at the expense of two of the SPI config-
urable ports, giving you two HDLC ports and one asynchronous/SPI serial port.
•
Supports 1.15 Mbps IrDA transceiver
Table 1 below summarizes their main features of the RCM3750.
The RCM3750 is programmed over a standard PC serial port through a programming cable
supplied with the Development Kit, and can also be programed through a USB port with an
RS-232/USB converter or over an Ethernet with the RabbitLink (both available from Rabbit
Semiconuctor).
Appendix A provides detailed specifications for the RCM3750.
Table 1. RCM3750 Features
Feature
RCM3750
Microprocessor
Rabbit
®
3000 running at 22.1 MHz
Flash Memory
512K
SRAM
512K
Serial Flash Memory
1 Mbyte
Serial Ports
4 shared high-speed, 3.3 V CMOS-compatible ports:
all 4 are configurable as asynchronous serial ports;
3 are configurable as a clocked serial port (SPI) and 1 is
configurable as an HDLC serial port;
option for second HDLC serial port at the expense of 2
clocked serial ports (SPI)
Input Voltage
4.75–5.25 V DC @175 mA
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