HP-48 FRAM Cards
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07-23-2016, 12:46 AM
(This post was last modified: 07-23-2016 12:50 AM by Dave Frederickson.)
Post: #12
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RE: HP-48 FRAM Cards
Thanks, Matthias, for those FRAM articles. The first article states that FRAM is good for >10^14 write cycles or >150,000 years of continuous data logging.
For FRAM71 owners, the chip used, a Cypress FM22L16, is good for more than a trillion read/write cycles and data retention is rated at 151 years (Really! Had to eek out that extra year to beat the competition with only 150 years.). So FRAM's disadvantages are higher cost, lower densities than flash, and storage capacity limitations (according to Wikipedia). (07-23-2016 12:03 AM)snrowe Wrote: Cons: Incorrect! A destructive read mechanism means that the data is lost when read and must be followed by a write operation to restore the data, like magnetic core memory. This has nothing to do with endurance. Dave |
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Messages In This Thread |
HP-48 FRAM Cards - JDW - 07-16-2016, 02:59 AM
RE: HP-48 FRAM Cards - Dave Frederickson - 07-16-2016, 04:15 AM
RE: HP-48 FRAM Cards - JDW - 07-16-2016, 04:21 AM
RE: HP-48 FRAM Cards - matthiaspaul - 07-16-2016, 04:39 PM
RE: HP-48 FRAM Cards - Dave Frederickson - 07-16-2016, 09:18 PM
RE: HP-48 FRAM Cards - Michael Lopez - 07-16-2016, 07:07 AM
RE: HP-48 FRAM Cards - cruff - 07-16-2016, 12:20 PM
RE: HP-48 FRAM Cards - JDW - 07-16-2016, 12:24 PM
RE: HP-48 FRAM Cards - JDW - 07-17-2016, 09:23 AM
RE: HP-48 FRAM Cards - snrowe - 07-23-2016, 12:03 AM
RE: HP-48 FRAM Cards - JDW - 07-23-2016, 12:19 AM
RE: HP-48 FRAM Cards - snrowe - 07-23-2016, 12:51 AM
RE: HP-48 FRAM Cards - JDW - 07-23-2016, 12:58 AM
RE: HP-48 FRAM Cards - snrowe - 07-23-2016, 01:04 AM
RE: HP-48 FRAM Cards - Dave Frederickson - 07-23-2016, 01:40 AM
RE: HP-48 FRAM Cards - snrowe - 07-23-2016, 02:37 AM
RE: HP-48 FRAM Cards - Sylvain Cote - 07-23-2016, 02:45 AM
RE: HP-48 FRAM Cards - matthiaspaul - 07-23-2016, 05:10 PM
RE: HP-48 FRAM Cards - JDW - 07-23-2016, 10:56 PM
RE: HP-48 FRAM Cards - matthiaspaul - 07-24-2016, 02:28 AM
RE: HP-48 FRAM Cards - Dave Frederickson - 07-24-2016, 04:29 PM
RE: HP-48 FRAM Cards - matthiaspaul - 07-24-2016, 06:52 PM
RE: HP-48 FRAM Cards - Dave Frederickson - 07-23-2016 12:46 AM
RE: HP-48 FRAM Cards - snrowe - 07-23-2016, 01:00 AM
RE: HP-48 FRAM Cards - Dave Frederickson - 07-23-2016, 01:22 AM
RE: HP-48 FRAM Cards - snrowe - 07-23-2016, 01:35 AM
RE: HP-48 FRAM Cards - JDW - 07-23-2016, 02:01 AM
RE: HP-48 FRAM Cards - JDW - 07-23-2016, 02:57 AM
RE: HP-48 FRAM Cards - snrowe - 07-23-2016, 03:14 AM
RE: HP-48 FRAM Cards - JDW - 07-23-2016, 03:50 AM
RE: HP-48 FRAM Cards - Dave Frederickson - 07-23-2016, 03:53 AM
RE: HP-48 FRAM Cards - JDW - 08-10-2016, 01:54 PM
RE: HP-48 FRAM Cards - matthiaspaul - 08-17-2016, 09:38 AM
RE: HP-48 FRAM Cards - JDW - 08-16-2016, 01:56 AM
RE: HP-48 FRAM Cards - matthiaspaul - 08-18-2016, 09:56 AM
RE: HP-48 FRAM Cards - JDW - 08-19-2016, 12:06 AM
RE: HP-48 FRAM Cards - Dave Frederickson - 08-19-2016, 12:20 AM
RE: HP-48 FRAM Cards - JDW - 08-19-2016, 12:32 AM
RE: HP-48 FRAM Cards - Dave Frederickson - 08-19-2016, 02:15 AM
RE: HP-48 FRAM Cards - matthiaspaul - 08-20-2016, 11:52 AM
RE: HP-48 FRAM Cards - Ron Ross - 08-16-2016, 01:04 PM
RE: HP-48 FRAM Cards - JDW - 08-16-2016, 01:27 PM
RE: HP-48 FRAM Cards - Ron Ross - 08-16-2016, 04:14 PM
RE: HP-48 FRAM Cards - JDW - 08-16-2016, 11:43 PM
RE: HP-48 FRAM Cards - JDW - 08-19-2016, 02:21 AM
RE: HP-48 FRAM Cards - JDW - 08-21-2016, 11:44 PM
RE: HP-48 FRAM Cards - Han - 08-22-2016, 04:10 PM
RE: HP-48 FRAM Cards - matthiaspaul - 08-22-2016, 07:32 PM
RE: HP-48 FRAM Cards - gege - 08-25-2016, 03:19 PM
RE: HP-48 FRAM Cards - matthiaspaul - 08-25-2016, 07:38 PM
RE: HP-48 FRAM Cards - JDW - 08-25-2016, 11:52 PM
RE: HP-48 FRAM Cards - Ron Ross - 08-26-2016, 04:13 PM
RE: HP-48 FRAM Cards - matthiaspaul - 08-27-2016, 11:32 AM
RE: HP-48 FRAM Cards - JDW - 08-27-2016, 12:21 AM
RE: HP-48 FRAM Cards - gege - 08-27-2016, 09:36 AM
RE: HP-48 FRAM Cards - JDW - 08-29-2016, 12:21 AM
RE: HP-48 FRAM Cards - gege - 08-29-2016, 05:32 AM
RE: HP-48 FRAM Cards - JDW - 08-29-2016, 05:35 AM
RE: HP-48 FRAM Cards - gege - 08-29-2016, 05:36 AM
RE: HP-48 FRAM Cards - Han - 03-23-2017, 02:45 PM
RE: HP-48 FRAM Cards - Hans Brueggemann - 03-23-2017, 06:44 PM
RE: HP-48 FRAM Cards - Chris Dreher - 03-23-2017, 04:06 PM
RE: HP-48 FRAM Cards - EugeneNine - 03-23-2017, 04:58 PM
RE: HP-48 FRAM Cards - JDW - 03-23-2017, 11:54 PM
RE: HP-48 FRAM Cards - EugeneNine - 03-24-2017, 12:11 PM
RE: HP-48 FRAM Cards - Gary Cray - 07-16-2017, 06:47 PM
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