Memory Voltage Provision Circuit With Supply Logic Detection
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Solution Overview
Problem
Existing voltage provision circuits for memory circuits, such as efuse memory circuits, malfunction due to erroneous supply voltage logic states, leading to improper functioning of control circuits and potential mis-programming of memory cells.
Innovation Solution
A voltage provision circuit with an integrated voltage detector that detects incorrect logic states of supply voltages and forces the operation voltage to ground, preventing malfunction by ensuring correct voltage levels are applied to memory cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage provision circuits operate without voltage detection, then the circuit structure remains simple, but the circuit malfunctions due to erroneous supply voltage logic states
Solution Approach 1:
The voltage detector circuit performs preliminary detection of supply voltage logic states before the voltage provision circuit executes its operation. By detecting erroneous voltage states in advance, the system can prevent malfunctions before they occur, thereby improving reliability without significantly complicating the overall circuit operation
Solution Approach 2:
A voltage detector circuit is introduced as an intermediary component between the supply voltage source and the voltage provision circuit. This intermediary detects voltage logic states and provides control signals to prevent erroneous operation, resolving the contradiction by adding a dedicated detection function that improves reliability while maintaining clear circuit organization
2Reliability
If voltage detection is added to prevent erroneous operation, then circuit reliability improves, but device complexity increases
Solution Approach 1:
The voltage detector serves as an intermediary monitoring component that independently checks supply voltage logic states. By separating the detection function from the voltage provision function, the system achieves improved reliability through enhanced monitoring without excessively complicating the core voltage provision operation
Solution Approach 2:
The voltage detector provides feedback control signals to the voltage provision circuit based on detected voltage logic states. This feedback mechanism enables the system to automatically respond to erroneous voltage conditions and correct or prevent malfunctions, improving programming integrity while using a standardized feedback control approach that limits complexity growth
Data Source
AI summary
A circuit includes a memory array comprising a plurality of memory cells; and a voltage provision circuit configured to provide an operation voltage for one or more of the plurality of memory cells, the operation voltage being shifted from a first voltage domain to a second voltage domain. The voltage provision circuit comprises a voltage detector. The voltage detector is configured to receive a first supply voltage in the first voltage domain, powered by a second supply voltage in the second voltage domain, and provide a first control signal. The first control signal is configured to determine whether the operation voltage is equal to the second supply voltage at a first logic state or the second supply voltage at a second logic state.