Programmable non-volatile analog voltage source devices and methods
US5388064A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1991 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Nov 26, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C27/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Programmable non-volatile analog voltage source devices and methods wherein analog voltages may be sampled and stored in a non-volatile manner for output, typically through parallel output buffers. In one form and in a single integrated circuit, an input provided to the circuit may be stored at any analog storage location as determined by an address also provided to the circuit, the storage location determining at which of the outputs of the circuit the stored value will appear. While the storage, achieved by way of storage of differential voltages in floating gate MOSFET devices, is non-volatile, the same is also electrically alterable as desired. Various alternate embodiments and methods including the ability to address multiple pages of analog storage locations for storage of analog signals and selective parallel output of each page of the storage, output enable capabilities, parallel inputs and digital inputs are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.