Sourcing a microcontroller with enough I/O

R

Thread Starter

Russell Buckett

I am looking for a microcontroller that will serve as the main processing unit for a range of 4-20mA instrument sensors. It must have at least 90% of the following spec:

2 x 12-bit analog inputs
2 x 12-bit analog outputs
4 x digital inputs
12 x digital outputs
At least one RS232 port
Preferably ethernet ability
Driver for a graphical LCD display 128 x 64
Keypad input

I have found a number of single board computer manufacturers but none that offer all of this capability on one board. The problem tends to be lack of analog I/O.

Has anyone come across a microcontroller/SBC with these capabilities? If so could you tell me who manufactures them?
 
Try WAGO.

Not a single board approach but a modular approach (and very, very cost effective):

See WAGO Part Number next to call outs:

> 2 x 12-bit analog inputs = 750-454 (2 channel)
> 2 x 12-bit analog outputs = 750-554 (2 channel)
> 4 x digital inputs = 750-403 (4 Channel)
> 12 x digital outputs = 750-504 (4 Channel - need 3 of these)
> At least one RS232 port = 750-650
> Preferably ethernet ability = 750-842(Enet PLC) <

For the next items go with a low cost HMI (there are many of them - try Maple Systems or Aromat).

> Driver for a graphical LCD display 128 x 64
> Keypad input <

For more documentation visit:
http://www.wago.com/wagoweb/documentation/navigate/nm0d___e.htm

Or contact WAGO for free tech support at:
1-800-346-7245
 
Have you considered using a PC104 type controller? These are essentially an IBM PC architecture in a small stackable format (no back plane) and are available from a large number of manufacturers. You can get I/O boards in almost any arrangement you could desire.
 
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