Question

Notify Me Bookmark

Given a 64M × 1 DRAM. Each memory cell needs to be refreshed every 50 ms and the refresh time is 40 ns. Determine (i) the number of rows and columns in the memory array configuration, (ii) the refresh period for each row, (iii) the number of refresh cycles which can be accommodated within one refresh period, and (iv) briefly discuss the reason of arranging the memory array in a square.

Given a 64M × 1 DRAM. Each memory cell needs to be refreshed every 50 ms and the refresh time is 40 ns. Determine (i) the number of rows and columns in the memory array configuration, (ii) the refresh period for each row, (iii) the number of refresh cycles which can be accommodated within one refresh period, and (iv) briefly discuss the reason of arranging the memory array in a square.

Image text
Given a 64 M × 1 DRAM. Each memory cell needs to be refreshed every 50 m s and the refresh time is 40 n s . Determine (i) the number of rows and columns in the memory array configuration, (ii) the refresh period for each row, (iii) the number of refresh cycles which can be accommodated within one refresh period, and (iv) briefly discuss the reason of arranging the memory array in a square.

Detailed Answer

0 0

Please enter your email here. You will get email when this question is answered by our tutor.

Doubtrix Logo

Problem is not yet solved!

Click on Notify me to get email when question is answered.

Join Doubtrix with 7-days free trial

  • Icon Correct & Verified Answers
  • Icon No AI-Generated Answers
  • Icon Video Solution for Difficult Questions
  • Icon Work With Experts to Reach at Correct Answers
Notify me Login Sign Up

Similar/Related Questions

A 512M-bit DRAM is designed to be used by a microprocessor. The DRAM requires 10ns for each refresh operation and the refresh period of the DRAM is 256µs. The microprocessor issues a refresh cycle every 50ns. Determine the maximum number of rows of the DRAM that can be used by the microprocessor without any refresh issue. (c) Determine the time (in %) spent for the refresh operation using the parameters in Question 2(b).
Solution
1 0

Could a set of three vectors in R^4 span all of R^4? Explain. What about n vectors in R^4 when n is less than m? Could a set of three vectors in R^4 span all of R^4? Explain. Choose the correct answer below. A. Yes. Any number of vectors in R^4 will span all of R^4. B. Yes. A set of n vectors in R^m can span R^m when n < m. There is a sufficient number of rows in the matrix A formed by the vectors to have enough pivot points to show that the vectors span R^m C. No. The matrix A whose columns are the three vectors has four rows. To have a pivot in each row, A would have to have at least four columns (one for each pivot). D. No. There is no way for any number of vectors in R^4 to span all of R^4. Could a set of n vectors in R^m span all of R^m when n is less than m? Explain. Choose the correct answer below. A. No. The matrix A whose columns are the n vectors has m rows. To have a pivot in each row, A would have to have at least m columns (one for each pivot). B. Yes. Any number of vectors in R^m will span all of m C. Yes. A set of n vectors in R^m can span R^m if n < m. There is a sufficient number of rows in the matrix A formed by the vectors to have enough pivot points to show that the vectors span R^m D. No. Without knowing values of n and m, there is no way to determine if n vectors in R^m will span all of R^m
Solution
1 0

Consider an 1M x 4bit DRAM chip employs a 4-block design with square cell arrays. Determine (i) the number of address lines required for the block decoder, and (ii) the number of address bits for the row and column decoders used for each block.
Solution
2 0