Programmable integrated-circuit switch
US5452229A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1992 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Dec 18, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/1778
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A non-volatile, in-system programmable integrated-circuit switch has horizontal conductive lines and vertical conductive lines. A programmable interconnect cell including a floating gate transistor is provided at each intersection of a horizontal line and a vertical line. Each line is connected to a pin through a programmable I/O cell which includes a floating gate transistor. Each I/O cell can be programmed to configure the corresponding pin as an input pin or as an inverting or non-inverting output pin. The I/O cell can also be programmed to tri-state the pin or to fix the pin at a high or low voltage level. Each input pin can be connected to more than one output pins. A TTL-to-CMOS translator in each I/O cell is provided in the output section of the cell to reduce the translator output load and make the load, and hence the speed and power consumption of the switch, less dependent on the switch programming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.