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What every programmer should know about memory, Part 1

What every programmer should know about memory, Part 1

Posted Sep 22, 2007 17:20 UTC (Sat) by ttonino (guest, #4073)
Parent article: What every programmer should know about memory, Part 1

DRAM data has to be written back after every read: there is just enough charge in a cell to give a readable output on the bit line. That data must be written back when changing to another line.

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What every programmer should know about memory, Part 1

Posted Sep 22, 2007 17:42 UTC (Sat) by dskoll (subscriber, #1630) [Link]

DRAM data has to be written back after every read

That happens automatically. The sense amplifiers form a positive feedback loop that restores the charge in the capacitor. In fact, a refresh is performed just by doing a read (but throwing away the data.)


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