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Which of the refresh circuit is similar to CBR?
  • a)
    software refresh
  • b)
    hidden refresh
  • c)
    burst refresh
  • d)
    distribute refresh
Correct answer is option 'B'. Can you explain this answer?
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Which of the refresh circuit is similar to CBR?a)software refreshb)hid...
Explanation: In the hidden refresh, the refresh cycle is added to the end of a normal read cycle. The RAS signal goes high and is then asserted low. In the end of the read cycle, the CAS is still asserted. This is similar to the CBR mechanism, that is, toggling of RAS signal at the end of the read cycle starts a CBR refresh cycle.
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Which of the refresh circuit is similar to CBR?a)software refreshb)hid...
Hidden Refresh
Hidden refresh is the refresh circuit that is similar to CBR (Continuous Background Refresh) in DRAM (Dynamic Random Access Memory). Here's why:

Similarity to CBR
- Continuous Background Refresh (CBR): CBR is a technique used in DRAM to continuously refresh the memory cells in the background without interrupting the normal operation of the memory. This helps in preventing data loss due to charge leakage in the memory cells.
- Hidden Refresh: Hidden refresh is a type of refresh circuit in DRAM that performs refresh operations in the background without disturbing the normal read/write operations of the memory. It operates similarly to CBR by continuously refreshing the memory cells without the need for explicit refresh commands from the memory controller.
- Comparison: Both CBR and hidden refresh aim to maintain the integrity of data stored in the memory by continuously refreshing the memory cells in the background. They help in preventing data corruption and loss by ensuring that the memory cells retain their stored charge.
- Key Point: The similarity between hidden refresh and CBR lies in their approach to performing refresh operations continuously in the background without impacting the normal functioning of the memory.
By utilizing hidden refresh in DRAM, memory systems can ensure data integrity and reliability without the need for manual intervention or disruption of memory operations.
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Which of the refresh circuit is similar to CBR?a)software refreshb)hidden refreshc)burst refreshd)distribute refreshCorrect answer is option 'B'. Can you explain this answer?
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