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[DPRG] Programmable Logic Devices Question

Subject: [DPRG] Programmable Logic Devices Question
From: Dave Grubb davidagrubb at hotmail.com
Date: Thu Jan 14 15:27:17 CST 2010

I have been playing around with CPLDs recently, but I think they are probably still overkill for your requirements. They're handy though as they are non-volatile (unlike most FPGAs) so require very little supporting circuitry and come as smaller devices. 

I haven't used Atmel devices enough to really say much about their software but I got the impression from fiddling that Microchip's MPLAB suite was greatly superior and their programming devices are very nice. I have a PicKit2 somewhere which is almost a keychain sized USB-powered programmer that was relatively inexpensive. Perhaps a small PIC 12F series controller would be suitable? Those only have 8 pins, relatively few features and cost little more than a dollar each. 

From: jquinones at ti.com
To: dprglist at dprg.org
Date: Thu, 14 Jan 2010 14:44:02 -0600
Subject: [DPRG] Programmable Logic Devices Question

Hi Group,


I am wondering what programmable logic device setup would
you recommend? Every now and then I need a function which a simple programmable
device can tackle better than a microcontroller. Some times it is because of
speed, and other times it is because I just need one dinky little function and
an entire microcontroller seems like mega overkill.


I know there is a lot of support out there for FPGA and
similar devices, but these are, as well, too much overkill.


What I am wondering if there is out there some simple 8 pin
devices with a few logic gates to form a simple logic equation. Or it can be a
little bit more complicated than this, but not to the FPGA extent.


It would also be a plus that they have good tools. I went
into Atmel and their tools almost look like DOS ancient technology. It uses the
parallel port. What the heck is this? Mega Legacy or a time machine?


What have you used and what can you recommend? Thanks for
your input!


Best regards,



Texas Instruments
- Applications Engineer

13560 North Central Expressway


Dallas TX, 75243

Office: 1-214-567-7275



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