Power source for memory circuitry
First Claim
1. An integrated circuit comprising:
- a power supply input pin for receiving an off-chip supply voltage;
an on-chip power source to be powered by the off-chip supply voltage;
a set of one or more circuits;
a configuration memory storing a set of one or more memory settings that indicates whether each member of the set of one or more circuits is powered by the on-chip power source or by the off-chip supply voltage; and
control circuitry, responsive to the set of one or more memory settings, controlling whether each member of the set of one or more circuits is powered by the on-chip power source or by the off-chip supply voltage.
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Accused Products
Abstract
An integrated circuit comprises a power supply input pin for receiving an off-chip supply voltage which can have a variable current, an on-chip power source to be powered by the off-chip supply voltage and which can provide a regulated current, a set of one or more circuits to be powered by at least one of the off-chip supply voltage and the on-chip power source, a configuration memory storing a set of one or more memory settings that indicate whether a circuit of said set of one or more circuits is powered by the on-chip power source, and control circuitry responsive to the at least one memory setting to control whether said circuit of said set of one or more circuits is powered by the on-chip power source.
44 Citations
20 Claims
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1. An integrated circuit comprising:
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a power supply input pin for receiving an off-chip supply voltage; an on-chip power source to be powered by the off-chip supply voltage; a set of one or more circuits; a configuration memory storing a set of one or more memory settings that indicates whether each member of the set of one or more circuits is powered by the on-chip power source or by the off-chip supply voltage; and control circuitry, responsive to the set of one or more memory settings, controlling whether each member of the set of one or more circuits is powered by the on-chip power source or by the off-chip supply voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An integrated circuit comprising:
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a power supply input pin for receiving an off-chip supply voltage; an on-chip power source to be powered by the off-chip supply voltage; a set of one or more circuits to be powered by at least one of the off-chip supply voltage and the on-chip power source; a configuration memory storing a set of one or more memory settings that indicates whether at least one circuit of the set of one or more circuits is powered by the on-chip power source; and control circuitry, responsive to the set of one or more memory settings, controlling whether the at least one circuit is powered by the on-chip power source, wherein; the set of one or more circuits includes components of a charge pump, the components of the charge pump including a plurality of serially coupled charge pump stages arranged to pump charge from a first stage to a last stage of the plurality; the charge pump stages of the plurality including an input node, an output node, a pass transistor electrically coupling the input node and the output node, a first boost capacitor coupled to the output node, and a second boost capacitor coupled to a gate of the pass transistor; and the memory settings indicate whether at least one of;
(i) the first boost capacitors, (ii) the second boost capacitors, and (iii) the input node of a first stage are powered by the on-chip power source.
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15. A method comprising:
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accessing, from an integrated circuit, a set of one or more memory settings that indicates whether each member of a set of one or more circuits is powered by an on-chip power source or by an off-chip supply voltage, the on-chip power source powered by the off-chip supply voltage via a power supply input pin; and responsive to the set of one or more memory settings, controlling whether each member of the set of one or more circuits is powered by the on-chip power source or by the off-chip supply voltage. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification