1
\$\begingroup\$

I haven't seen any restrictions about minimum clock, but I may have overlooked them.

EDIT: The module is a Crucial CT4G4SFS824A, based (this is an informed guess) on 4Gb Micron 512 Meg x 8

\$\endgroup\$
  • \$\begingroup\$ What do you hope to learn from this "inspection"? Likely you should consider some sort of simulation with a good model of behavior, instead of doing this physically in a setting where, even if it works, the kinds of physical limitations such as delays that would normally be a key concern will be all but invisible. \$\endgroup\$ – Chris Stratton Jul 20 '19 at 16:56
  • \$\begingroup\$ @ChrisStratton We are having problems with a custom board that fails on the write latency adjustment step. We'd like to inspect that specific calibration. \$\endgroup\$ – perencia Jul 20 '19 at 17:03
  • \$\begingroup\$ Please supply a part number of the module. Looking at the part numbers of the chips themselves may be useful. Any dynamic RAM has a minimum refresh rate; in the way-back (almost 20 years ago!!!) that worked out to a minimum clock of 100MHz or so on some parts we had been working with. \$\endgroup\$ – TimWescott Jul 20 '19 at 17:27
  • \$\begingroup\$ @TimWescott The module is a Crucial CT4G4SFS824A, based (this is an informed guess) on 4Gb Micron 512 Meg x 8 (micron.com/-/media/client/global/documents/products/data-sheet/…) \$\endgroup\$ – perencia Jul 20 '19 at 19:14
  • \$\begingroup\$ Sorry to be picky, but Stackexchange wants you to answer such questions by editing your question, so they can have a tidy question/answer pair. \$\endgroup\$ – TimWescott Jul 20 '19 at 19:47
4
\$\begingroup\$

Yes, but adjust the refresh rate accordingly to make sure you hit all the rows in the time specified in the datasheet. I’ve done this for FPGA ASIC prototyping and it works fine.

| improve this answer | |
\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.