Define time period between successive refresh requests

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Reference no: EM1335352

A microcomputer memory is built from 64K X 1 DRAM, with DRAM cell array organized into 256 rows. Each row needs to be refreshed at least once every 4 ms, strictly on a periodic basis.

1. Give time period between successive refresh requests.
2. How long a refresh address counter do we need?

Reference no: EM1335352

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