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SLang26's avatar
SLang26
Icon for New Contributor rankNew Contributor
5 years ago

MT25Q Reset Pin wiring

Hello, the MT25Q configuration flash devices do have (as opposed former EPCQ devices) a reset pin. I learned that reset of the QSPI flash might be an issue: https://www.intel.com/content/www/us/en...
JohnT_Altera's avatar
JohnT_Altera
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi,

The KDB that you mention is related to QSPI Flash connected directly to the HPS pin and not the FPGA configuration pin. There will be no issue on connecting the MT25Q to FPGA configuration pin directly. You may refer to https://www.intel.com/content/www/us/en/programmable/support/support-resources/knowledge-base/component/2018/how-do-i-enable-micron-s-mt25q-support-for-eol-of-epcq---256mb--.html for the byte addressing mode.

For the reset pin, I would recommend you to weak-pull it so that the flash does not enter reset mode.