ece546fall11_16

ece546fall11_16 - ECE ECE 546 - VLSI Systems Design Lecture...

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ECE 546 ECE 546 - VLSI Systems Design VLSI Systems Design ecture ecture 6: SRAM 6: SRAM Lecture Lecture 16: SRAM 16: SRAM Fall Fall 2011 2011 W. Rhett Davis NC State University ith significant material from ith significant material from abaey abaey handrakasan handrakasan and and ikoli ć Slide 1 © W. Rhett Davis NC State University ECE 546 Fall 2011 with significant material from with significant material from Rabaey Rabaey, , Chandrakasan Chandrakasan, and , and Nikoli Nikoli
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Announcements Re-grade Requests for Midterm due Today HW#7 Due Tuesday Video Lecture Tuesday » class will not meet Project Introduction in 1 week Slide 2 © W. Rhett Davis NC State University ECE 546 Fall 2011
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Today’s Lecture RAM SRAM Multi-Port SRAM CAM Slide 3 © W. Rhett Davis NC State University ECE 546 Fall 2011
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6-transistor CMOS SRAM Cell L WL V DD M M M 5 M 6 4 2 Q Q M 1 M 3 BL BL Slide 4 © W. Rhett Davis NC State University ECE 546 Fall 2011
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CMOS SRAM Analysis (Read) WL V D BL DD M 5 M 6 M 4 BL Q = 1 Q = 0 M 1 V DD V DD V DD C bit C bit ssume bit es precharged high Q=1 Q=0 Assume bit-lines precharged high, Q=1, Q=0 What could go wrong? Slide 5 © W. Rhett Davis NC State University ECE 546 Fall 2011
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“Read Upset” Problem    2 2 2 0 1 , 2 0 5 , V V V B V V k V V V V B V V V k n n T DD M p DSATn DSATn DD n n T DD M n    CR B V V CR CR V V V CR V B V n n T DD DSATn n T DD DSATn n 2 1 2 1 1 2 0 2 2 0 Modified equations (12.2) and (12.3) y Harun Demircioglu) WL 5 5 1 1 L W
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This note was uploaded on 01/26/2012 for the course EE 546 taught by Professor Whett during the Spring '11 term at N.C. State.

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ece546fall11_16 - ECE ECE 546 - VLSI Systems Design Lecture...

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