Am I able to use pins SD_CLK, SD_DATA_0, SD_DATA_1 of WROOM module, where flash memory is connected, for additional external memory eg. fram?
How to control SD_CMD, that is used as chip select pin?
What voltages are on these pins: normal, as any other pin, or 1.7V?
Is it a good practice to connect my memory, that will be used rarely, there?
Using flash pins (SD_xxx) for external memory
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KanyeKanye
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