Temperature dependent timing in standard cell designs

Andras Timar, Marta Rencz

Research output: Contribution to journalArticle

15 Citations (Scopus)


This paper proposes a methodology to simulate temperature dependent timing in standard cell designs. Temperature dependent timing characteristics are derived from standard delay format (SDF) files that are created by synthesis tools automatically based on SPICE characterizations. In addition, a fast calculation of temperatures using the equivalent Foster RC network is presented. A case study is also presented in this paper where the temperature dependent frequency variation of a ring oscillator is simulated demonstrating the necessity of temperature dependent timing simulations. An adaptively refineable partitioning method for simulating standard cell designs logi-thermally is proposed as well. This paper also introduces recent enhancements in the CellTherm logi-thermal simulator developed in the Department of Electron Devices, BME, Hungary. Finally, the simulation results are compared and verified with the SPICE compatible ELDO analog simulator from Mentor Graphics.

Original languageEnglish
Pages (from-to)521-529
Number of pages9
JournalMicroelectronics Journal
Issue number5
Publication statusPublished - May 2014



  • Electro-thermal
  • Grid
  • Keywords
  • Logi-thermal
  • Simulation
  • Temperature dependent delays

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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