4 Replies Latest reply on Sep 7, 2020 5:50 AM by BragadeeshV_41

    SPI Stops Working at 3 Devices

    RyWi_4724536

      I have the PSoC 6 connected to four MX25(https://www.macronix.com/Lists/Datasheet/Attachments/7534/MX25R3235F,%20Wide%20Range,%2032Mb,%20v1.6.pdf )external flash chips over SPI.

      When I connect any one, or two chips to the psoc I can read and write great. When I connect 3 or more I am unable to read or write any data to any of them. Everything shows up incorrectly.

      Any idea what could be causing this? I have tried adding pull up resistors to the chip selects. Also all of the chips work separately, and work in any combination of two.