Conference proceeding
Bi-directional input/output circuits with integrated level shifters for near-threshold computing
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Conference Proceedings, 1240
01 Jan 2017
Abstract
Conference Title: 2017 IEEE 60th International Midwest Symposium on Circuits and Systems (MWSCAS) Conference Start Date: 2017, Aug. 6 Conference End Date: 2017, Aug. 9 Conference Location: Boston, MA, USA Interfacing techniques for near-threshold computing are described in this paper. A bi-directional input/output circuit with integrated level shifters is proposed for multiple near-threshold power domains. The circuit provides conversion ranges of 0.38 V to 1.2 V and 0.45 V to 3.3 V depending on the targeted output voltage. Eight different configurations of I/O circuits are evaluated with level shifters implemented with a standard current mirror, cross coupled, and the proposed single ended topology. The use of a single ended level shifter provides the optimum power-delay point. The I/O circuit, at a core voltage of 0.45 V, consumes 4.87 mW with a fan out of four (FO4) delay of 0.46 for a V DOUT and V PAD voltage of, respectively, 0.45 V and 3.3 V. For a V DD, L of 0.625 V and V DD, H of 1.5 V, the delay and total power consumption of the single ended level shifter are, respectively, 0.74x and 0.4x that of a current mirror level shifter.
Metrics
3 Record Views
Details
- Title
- Bi-directional input/output circuits with integrated level shifters for near-threshold computing
- Creators
- Md Shazzad HossainIoannis Savidis
- Publication Details
- The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Conference Proceedings, 1240
- Publisher
- The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Electrical and Computer Engineering
- Identifiers
- 991019170497204721