The paper presents the use of custom integrated circuits for an automobile electronic dashboard which also manages the electric system. The central element of the development is a four bit, low cost CMOS microcomputer (Z3003) particularly designed for automotive controllers. First of all, an electronic dashboard, developed with standard components, is described. The paper then illustrates the custom i.c. design, with particular regard to features intended to meet instrumentation requirements. Another custom i.c. is described: a multiple output power controller with serial interface (Z4002). The availability of logic and power devices in a single component allows to easily decentralise switching circuitry. Some critical considerations regarding the main factors affecting the reliability of an electronic automobile system, developed with random logic, reveal the convenience of adopting custom i.c.'s to obtain better figures of merit. An innovative electronic dashboard, including custom i.c.'s for the CPU and load interface functions is described. Then, a reliability figure comparison is made between the random logic version and the new one along with a description of the quality/reliability assurance program.

Media Info

  • Features: Figures;
  • Pagination: p. 233-251

Subject/Index Terms

Filing Info

  • Accession Number: 00399891
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: ISATA 84014, HS-038 432
  • Files: HSL, USDOT
  • Created Date: Oct 31 1985 12:00AM