The SBC44EC is an embedded Single Board Computer (SBC) with 10Mbs Ethernet and RS232 interface for
44 pin PLCC PIC18Fxxx microcontrollers. It is delivered with a PIC18F452 CPU,
a 24LC256 EEPROM for web pages, and with the
Modtronix SBC44EC Web Server
installed! By using a terminal program, like Hyper terminal, the demo web page can be replaced with
a custom one - no programming is required.
If you need an Ethernet enabled board with more I/O, Flash, RAM, EEPROM and a network bootloader, please
have a look at our
Ethernet enabled boards with network bootloader. These products also have better documentation and
many example programs included with them!
to view a live SBC65EC demo board that is accessible via the internet! The
SBC65EC also uses the Modtronix TCP/IP stack, and has a similar performance then the
SBC44EC board. This demo has been created by simply connecting a SBC65EC board to a
Billion ADSL Modem/Router.
The router is then configured to make the SBC65EC a virtual server that is accessible
via the internet. Most modern routers have this feature built in, and can be used.
The only difference between this board and the
is that this board uses PIC port pins RB0-RB4 to address the Ethernet chip, where the SBC45EC
uses PIC port pins RA0-RA3 and RA5. These differences make this board more suitable for applications
where analog input is required, seeing that the analog inputs of the PIC18F452 are located on port A.
The analog inputs can be accessed by connecting the
Frontend board to this board's Frontend expansion port.
This board also has some additional solder straps to disable the onboard RS232 interface driver.
When using this board as an Ethernet to RS485 interface converter, the RS232 interface driver has to be
disabled by making solder strap SJ1 and SJ2 and breaking solder strap SJ3 and SJ4.
All source code and a tutorial for the Modtronix Web Server can be downloaded below for free!
It was created by using the
free Microchip TCP/IP
stack (written in C), that can be compiled with the Hi Tech or Microchip MPLAB C18 compilers.
A Free, student version of the
Microchip MPLAB C18 compiler is available and can be used to compile the project. The compiled
code generated with the student version is only slightly larger than that created with the commercial version.
For a forum discussion of the free compiler click here.
It can however also be used with any other 44 pin
PLCC PIC18 chips, as long as it has enough FLASH memory.
Typical applications include HTTP Web servers (like the Modtronix Web Server), Mail clients,
Ethernet to RS232 interface converter, Ethernet to RS485 interface converters, Remote control via
Web Server, Protocol Bridge applications - Ethernet to USART, CAN, I2C, SPI etc.
It has been tested with the following 44 pin PLCC PIC chips and the Microchip TCP/IP stack: