Hello, people!
I would like to know if there's a substantial price difference between a system composed of a uC + ram + rom + driven LCD + keyboard versus a system like follows: uC with LCD driver + ram + rom + non driven LCD + keyboard
Thanks for the input, Max.
Hello Maxim,
That depends a lot on the type and size of LCD. If it's just a few short alphanumeric lines, drivers such as the HD44780 are very cheap.
Regards, Joerg
Hi Maxim,
I guess your question is suppossed to be what the difference is between uC + driven LCD and uC with LCD driver and non driven LCD. Many "it depends" Definitely it depends on the LCD driver itself. uCs with LCD are not as numerous as such without. So, using a uC without LCD driver gives you more flexibility and more options. Depending on your requirements an ARM device from Sharp could be very intersting, several devices with color LCD drivers. There is another one from Samsung with a less powerful LCD interface. Both Sharp and Samsung are not leading the pack in embedded memory though. If you need a memory range up to 512 KB Flash, the LPC2138 from Philips and an external LCD driver might be very interesting. If you need several MBytes of memory, the Samsung device has a SDRAM controller and is farily inexpensive ( as far as I know a little difficult to come by though). In a nutshell: It would help to get more information like what kind of LCD display? Resolution? Color? How much memory in the system?
An Schwob
Maxim Kovgan wrote:
between a
Thanks, dear Schwob!
My needs are actually dot matrix monochrome LCD device, with pixel brightness level control. So there's no need of serious LCD capabilities, touchscreens etc. :) As for uC sample a consultant suggested using elan uC i mention in other posts. I hopefully need about 256k of ram + 256k rom [for program&data] + several [1-2kb] of non volatile mem for memory "registers".
the problem is that i still am coding a portable PC program, with no time of serious research of models/programming environment, and i don't wish to end up with a "mission impossible" or with a high end price. So i wanted to understand what is the trade-off to choose each or other of the options you've mentioned.
I see that it should not be a significant difference, so I can go for a well-supported [software_development-wise] uC/uP and buy a more expensive driven LCD.
If you can point me out for same class of uC's comparable to Elan's EM78P862A chip [862 family i guess]
Many Thanks aga> Hi Maxim,
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