6502.org
http://forum.6502.org/

CPLD for solderless breadboard
http://forum.6502.org/viewtopic.php?f=10&t=6867
Page 1 of 1

Author:  plasmo [ Fri Nov 12, 2021 6:53 am ]
Post subject:  CPLD for solderless breadboard

This small CPLD daughterboard is inspired by recent discussion about GODIL. I have a surplus of Altera EPM7128SQC100 so I designed a small expansion board (IDECPLD) that fits the existing IDE44 edge connector so instead of a compact flash interface, I can plug in the IDECPLD and program the CPLD for specialized applications. First picture show IDECPLD plugs into IDE44 edge connector of CRC65

With a carrier board that expands 2x22 2mm female socket to 2x22 2.54mm header, I can plug the IDECPLD into a solderless breadboard to support small experiments. EPM7128S is a 5V CPLD so I don't have to deal with 3.3V-to-5V conversion. EPM7128SQC100 is about $3 on UTSource. Its equivalent ATF1508ASV-15AU100 is $5.38 on Mouser so this is an affordable programmable solution for solderless breadboard.
Bill

Attachments:
0DSC_66681111.jpg
0DSC_66681111.jpg [ 1.21 MiB | Viewed 1663 times ]
DSC_66661111.jpg
DSC_66661111.jpg [ 1.22 MiB | Viewed 1663 times ]
DSC_66641111.jpg
DSC_66641111.jpg [ 1.43 MiB | Viewed 1663 times ]

Author:  plasmo [ Mon Nov 22, 2021 9:37 pm ]
Post subject:  Re: CPLD for solderless breadboard

I saw Garth's picture of RAM module that can be plugged into solderless breadboard. I like it. Here is a similar picture of CPLD for breadboard as well as compact flash for breadboard.
Bill

Attachments:
DSC_66761122.jpg
DSC_66761122.jpg [ 1.28 MiB | Viewed 1471 times ]
DSC_66751122.jpg
DSC_66751122.jpg [ 1.16 MiB | Viewed 1471 times ]

Page 1 of 1 All times are UTC
Powered by phpBB® Forum Software © phpBB Group
http://www.phpbb.com/