POWER SUPPLY SYSTEM FOR LOW POWER MCU
First Claim
1. A microcontroller unit, comprising:
- a processing unit having normal power mode of operation and a low power mode of operation and having;
digital circuitry connected to the processing unit having a plurality of logic circuits associated therewith for processing digital values;
a plurality of retention flip-flops associated with the digital circuitry for storing a logical state of at least one or more of the logic circuits within the digital circuitry when the processing unit enters the low power mode of operation; and
wherein the plurality of retention flip flops include a first type of transistors for operating in both the low and high power modes of operation and a second type of transistors for operation only in the normal mode of operation and wherein substantially the remainder of the digital circuitry in the processing unit comprises the second type of transistors.
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Accused Products
Abstract
A microcontroller includes a processing unit having a processing unit having normal power mode of operation and a low power mode of operation. The processing unit further having digital circuitry connected to the processing unit having a plurality of logic circuits associated therewith for processing digital values. A plurality of retention flip-flops are associated with the digital circuitry for storing a logical state of at least one or more of the logic circuits within the digital circuitry when the processing unit enters the low power mode of operation. The plurality of retention flip flops include a first type of transistors for operating in both the low and high power modes of operation and a second type of transistors for operation only in the normal mode of operation and wherein substantially the remainder of the digital circuitry in the processing unit comprises the second type of transistors.
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Citations
15 Claims
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1. A microcontroller unit, comprising:
a processing unit having normal power mode of operation and a low power mode of operation and having; digital circuitry connected to the processing unit having a plurality of logic circuits associated therewith for processing digital values; a plurality of retention flip-flops associated with the digital circuitry for storing a logical state of at least one or more of the logic circuits within the digital circuitry when the processing unit enters the low power mode of operation; and wherein the plurality of retention flip flops include a first type of transistors for operating in both the low and high power modes of operation and a second type of transistors for operation only in the normal mode of operation and wherein substantially the remainder of the digital circuitry in the processing unit comprises the second type of transistors. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A microcontroller unit, comprising:
a processing unit having normal power mode of operation and a low power mode of operation and having; digital circuitry connected to the processing unit having a plurality of logic circuits associated therewith for processing digital values; a plurality of retention flip-flops associated with the digital circuitry for storing a logical state of at least one or more of the logic circuits within the digital circuitry when the processing unit enters the low power mode of operation; and wherein the plurality of retention flip flops include core transistors for operating in both the low and high power modes of operation and input/output transistors for operation only in the normal mode of operation and wherein substantially the remainder of the digital circuitry in the processing unit comprises the input/output transistors. - View Dependent Claims (8, 9, 10, 11)
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12. A retention flip-flop circuit, comprising:
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a first type of transistors for operating in both the low and high power modes of operation; a second type of transistors for operation only in the normal mode of operation; wherein responsive to entry into a low power mode of operation the second type of transistors store a logical state of the flip-flop circuit; and wherein in the normal power mode of operation the first type of transistors are active and the second type of transistors are active and in the low power mode of operation the second type of transistors are active and the first type of transistors are inactive. - View Dependent Claims (13, 14, 15)
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Specification