2 Replies Latest reply on Apr 11, 2018 10:08 AM by bob.marlowe

    Limitations with Emulated EEPROM

    user_275561502
    user_275561502 Apr 11, 2018 6:13 AM

      Are there any limitations on the processor core when using the emulated EEPROM component. Does the CPU stop while the Flash is being written to for example?

        • 1. Re: Limitations with Emulated EEPROM
          e.pratt_1639216
          e.pratt_1639216 Apr 11, 2018 10:07 AM (in response to user_275561502)

          The CPU requires a specific speed when running the flash operations underlying the EEPROM Emulation, and take a noticeable amount of time and current to run. The CPU keeps running, but blocks/polls while operating.

          Depending on what kind of chip you have, there is some additional functionality that may change the statement above (the PSoC 6 has more functionality and behavior).

          As long as you have enough voltage, and don't mind the CPU bumping to 24MHz (IIRC) when writing flash, then it sounds like the EEPROM emulation writes will run asynchronously to the CPU? (It might block in the API for clarity's sake)

          • 2. Re: Limitations with Emulated EEPROM
            bob.marlowe
            bob.marlowe Apr 11, 2018 10:08 AM (in response to user_275561502)

            There are blocking writes and non-blocking writes for em_eeprom component. A side effect can be (device dependent) that the clock frequency might get changed during the write. For details see in System Reference Guide (from Creator help).

             

            Bob

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