What must be done to maintain valid data in a DRAM device?
Answers
Answer:
Explanation:
DRAM cell is composed of an access transistor and a
capacitor. Data is stored in the capacitor as electrical charge,
but electrical charge leaks over time. Therefore, DRAM
must be refreshed periodically to preserve the stored data.
Refresh negatively impacts DRAM performance and power
dissipation. First, the memory controller stalls normal
read and write requests to the part of the memory that is
being refreshed. Second, refresh operations consume energy
because refreshing a DRAM row involves operations such as
reading and restoring data. As the speed and size of DRAM
devices continue to increase with each new technology DRAM cell is composed of an access transistor and a
capacitor. Data is stored in the capacitor as electrical charge,
but electrical charge leaks over time. Therefore, DRAM
must be refreshed periodically to preserve the stored data.
Refresh negatively impacts DRAM performance and power
dissipation. First, the memory controller stalls normal
read and write requests to the part of the memory that is
being refreshed. Second, refresh operations consume energy
because refreshing a DRAM row involves operations such as
reading and restoring data. As the speed and size of DRAM
devices continue to increase with each new technolog