4.18.24 Movement Legacies, Reflection, and Review.pptx
Csla 130319073823-phpapp01-140821210430-phpapp02
1. A
SEMINAR ON
LOW POWER AND AREA EFFICIENT CARRY
SELECT ADDER
BY
Jayaprakash Nagaruru
2. Objective
To design a Carry Select
Adder(CSLA) with a optimum
utilization of area and power
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3. Agenda
• Introduction
• Carry Select Adder
• Delay and Area Evaluation
• Principle Behind Modification
• Modified CSLA
• Delay and Area Evaluation
• Implementation Results
• Conclusion
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4. Introduction
• Efficient design implementation of any ASIC
requires an appropriate style which meet the
design goals
Area
Power
Speed
• Multi-dimensional Trade off
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5. Carry Select Adder
• Ripple carry adder & MUX
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15. Implementation Results
• Typical ASIC flow Using 0.18u Technology for
regular and modified CSLA
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17. Conclusion
No. of
Bits
Area
Reduction
(%)
8 9.7
16 15
32 16.7
64 17.4
Power
Reduction
(%)
7.6
10.56
13.63
15.46
Delay
Overhead
(%)
14
9.8
6.7
3.76
Power
Delay
Product(%)
5.2
1.76
8.18
12.28
Area Delay
Product(%)
2.9
6.7
11
14.4
• Despite with a little delay overhead a optimized
carry select adder has been designed
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19. References
Bibliography
• IEEE 2012 paper on Low Power
& Area Efficient CSLA by B Ram
Kumar & H M Kittur
• J M Rabaey Digital Integrated
Circuits
• IJCE 2012 paper on VLSI
Realization Of Fast Carry Adder
in Binary Excess by Santhosh
Kannan and Bhanumathi
Webography
• http://en.wikipedia.org/wiki/Ca
rry-select_adder
• http://ieeexplore.ieee.org/xpl
/login.jsp?tp=&arnumber=540
7919&url=http%3A%2F%2Fiee
explore.ieee.org%2Fxpls%2Fab
s_all.jsp%3Farnumber%3D540
7919
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