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When PSRAM is performing internal refresh __________

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When PSRAM is performing internal refresh __________

(a) The read operation is performed

(b) The write operation is performed

(c) It can not be accessed for read or write

(d) The voltage goes HIGH

This question was addressed to me in an international level competition.

This intriguing question comes from Random Access Memory in division Memory Devices of Digital Circuits

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The correct option is (c) It can not be accessed for read or write

Best explanation: The full form of PSRAM is Pseudo Static RAM. It is a dynamic RAM having built-in fresh logic, which is implemented as a SRAM. So, it can not be accessed for read or write during the refresh operation.

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