Circuit adjustable after packaging having a voltage limiter and method of adjusting same
AssigneeSTMicroelectronics S.r.l.
InventorsSebastien Laville, Frederic Goutti
Life of this patent
Estimating the term…
Abstract
A circuit adjustable after packaging includes a functional circuit supplied with a power potential and a reference potential and has at least one parameter adjustable by programming at least one programmable element and a circuit to program the programmable element of the functional circuit. The adjustable circuit also includes a limiter circuit to limit the voltage between the power supply potential and the reference potential to an adjustable limiting voltage, and a circuit to adjust the limiting voltage. After adjusting a parameter of the functional circuit, the limiting voltage of the limiter circuit is adjusted.
Claims20
A circuit adjustable after packaging, comprising:
- a functional circuit supplied with a power potential and a reference potential and comprising at least one parameter adjustable by the programming of at least one programmable element;
- a circuit to program the programmable element of the functional circuit;
- a limiter circuit to limit the voltage between the power supply potential and the reference potential to an adjustable limiting voltage;
- and
- a circuit to adjust the limiting voltage.
A method for the programming of a programmable circuit comprising a functional circuit supplied with a power supply potential and a reference potential, comprising:
- programming at least one programmable element of the functional circuit, to adjust at least one parameter of the functional circuit;
- and
- adjusting a limiting voltage of a limiter circuit whose function is to limit the voltage between the power supply potential and the reference potential to the limiting voltage.
An integrated circuit comprising:
- a functional circuit coupled between a power supply potential and a reference potential;
- a programming circuit to adjust at least one parameter of the functional circuit;
- a limiter circuit to limit the voltage between the power supply potential and the reference potential to an adjustable limiting voltage;
- and
- a circuit to adjust the limiting voltage.
Dependencies are inferred from the claim text.