<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">Am 16.02.2022 um 21:00 schrieb Jay Schwichtenberg via Synth-diy <<a href="mailto:synth-diy@synth-diy.org" class="">synth-diy@synth-diy.org</a>>:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">there were 2 times I wore out the program flash in uCs. These were NXP chips and they were probably programmed 10-20 times over 9-12 months.</span></div></blockquote></div><br class=""><div class="">The flash wore out after only 20 rewrites? I think there must have something else gone wrong. I just dug out an old NXP (still Philips, actually) data sheet that says "<span style="background-color: rgb(255, 255, 255);" class=""><font size="2" class="">More than 100,000 minimum erase/program cycles for each byte“. I’ve seen other data sheets that say 1000 rewrites (from Microchip IIRC), but still</font></span><font size="2" class="">…</font></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font size="2" class=""><br class=""></font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font size="2" class="">I once managed to wear out a flash memory, this was due to sloppy programming. This was a (hand-operated) testing device, and instead of writing the flash once after each test it wrote 120 times (there were 120 values per test to be saved, and the write was inside a loop). After a few years the flash was indeed gone.</font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font size="2" class=""><br class=""></font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font size="2" class="">Ingo</font></span></div></body></html>