Memory boot reset

DE602020051864T2Active Publication Date: 2025-05-21MICRON TECHNOLOGY INC
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Patent Information

Application Number
DE602020051864
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-12-20
Filing Date
2020-12-14
Publication Date
2025-05-21
Estimated Expiration
2040-12-14

AI Technical Summary

Technical Problem

Existing power-on-reset (POR) circuitries in memory sub-systems are limited by their inability to accurately monitor power supply voltage due to process-voltage-temperature (PVT) variations, leading to false indications of sufficient voltage levels for resetting, especially when the power supply voltage is low.

Method used

A POR component with multiple voltage generators, including a reference voltage generator and a power-up voltage generator, that are designed to be insensitive to PVT variations, ensuring a reliable measurement of the power supply voltage by generating a steady reference voltage and comparing it with the power-up voltage to provide a reset signal only when the power supply is sufficiently high.

Benefits of technology

This solution reduces instances of false voltage measurements due to PVT variations, ensuring proper reset of the memory sub-system by generating a reliable reset signal only when the power supply voltage is stable and sufficient, thereby enhancing the reliability of the memory sub-system's operation.

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Abstract

A system can include a voltage generator configured to generate a reference voltage, a power-up voltage, and a replicated voltage based on a power supply voltage. The system can further include a logic sub-component coupled to the voltage generator and configured to output a reset signal based on a comparison of the reference voltage to the power-up voltage and an indication that the reference voltage that has entered a steady state and is reliable as a measurement with respect to a voltage level of the power supply voltage. The indication can be determined based on a comparison of the replicated voltage to a particular threshold voltage level.
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