/members-area/personalblogs/b/blog/posts/talk-spi-to-eeprom-with-hercules-launchpad---part-3-testing-spi-protocol-with-bus-pirateMy Peruvian mate martinvalencia and I purchased a set of 25LC256 SPI serial EEPROM chips.Our plan was to get them working with the Texas Instruments Hercules LaunchPad MK II .That was back in January. And then we stalled.Martin has restarted the exercen-USTelligent Community 12https://community.element14.com/members-area/personalblogs/b/blog/posts/talk-spi-to-eeprom-with-hercules-launchpad---part-3-testing-spi-protocol-with-bus-pirateMon, 11 May 2015 18:16:58 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:0239a9cd-d7f1-4ee2-8be5-d9d3e9e13420DAB0<p>As you discovered, the timing of device access is critical for some devices.</p><p>&nbsp;</p><p>Most memory systems use a constant clock and synchronous logic to make access under controlled circumstances.</p><p>&nbsp;</p><p>In the early days, we needed memory control chips to make sure that the commands were in sync with memory access and refresh cycles.</p><p>&nbsp;</p><p>Good post</p><p>&nbsp;</p><p>DAB</p><img src="https://community.element14.com/aggbug?PostID=20794&AppID=293&AppType=Weblog&ContentType=0" width="1" height="1">