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A Wide-Voltage-Range Transition-Detector With In-Situ Timing-Error Detection and Correction Based on Pulsed-Latch Design in 28 nm CMOS.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Nov2020, Vol. 67 Issue 11, p3933-3943. 11p. - Publication Year :
- 2020
-
Abstract
- Excessive timing margins are usually added in the wide-voltage-range design due to process, voltage and temperature (PVT) variations, which can be eliminated by adaptive voltage scaling (AVS). Some traditional Razor-based designs replace endpoint flip-flops with latches and ensure data sampled correctly. The duration of time-borrowing and the short path problem make the minimum-delay constraint worthy of consideration. To overcome the minimum-delay problem in the latch-based error detection and correction (EDAC) techniques, we propose a solution using a pulsed-latch and transition detector (TD). This method utilizes time-borrowing characteristics of the latch to ensure the correct function. To detect timing violations and minimize area overhead, we design a 15-transistor transition detector which is able to operate at a wide voltage range, from near-threshold voltage (NTV) to super-threshold voltage (STV). To minimize the overhead of pulse generators, a physical allocation-aware pulse generator insertion algorithm is presented to identify each desired group of a pulse generator and a pulsed-latch group. The proposed scheme is implemented in an 8-bit AES circuit through an automatic insertion flow and fabricated in a 28nm CMOS process. Chip measurements demonstrate that the whole design achieves up to 64.3% energy saving as compared to the conventional worst-case design at a small price of 4.3% area overhead. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PULSE generators
*GENERATORS of groups
*ALGORITHMS
*DETECTORS
*LOGIC circuits
Subjects
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 67
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 146782455
- Full Text :
- https://doi.org/10.1109/TCSI.2020.3023157