Programmable non-volatile data storage circuit and a method for programming a non-volatile data storage circuit
US6678185B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2002 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Sep 13, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C17/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A programmable non-volatile data storage calibration circuit stores a calibration code for a temperature sensor circuit of an IC, comprising a programmable array of addressable bi-state, bi-stable first circuit elements each comprising a fusible resistor. A power supply controlled by a data input signal addresses the first circuit elements to be switched from a first to a second state in the fusible resistor state, the supply, and a clock signal applied to an I/O terminal clocks the data input signal to the interpreter circuit. The interpreter circuit sequentially selects and addresses the first circuit elements and enables switching of the first circuit elements when the supply voltage is at its maximum, blowing a selected fusible resistor. A second, similar circuit element is switched to its second state after programming the calibration circuit to prevent its further programming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.