Sense Amplifier Controllable Power Module for Writing Phase
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Solution Overview
Problem
The drive capability of the write circuit in sense amplifiers is often weaker than the amplification circuit, leading to failure in writing data into memory cells as the write circuit cannot invert the sense amplifier, resulting in unsuccessful data writing.
Innovation Solution
A controllable power module supplies a first voltage to the amplification module during the writing phase and a second voltage during the non-writing phase, weakening the amplification module's effect on the bit line and reference bit line voltages, allowing the writing module to successfully pull the voltages according to the to-be-written data even when the drive capability is weak.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the amplification module operates with high drive capability, then the amplification of voltage difference is improved, but the writing operation fails because the write circuit cannot invert the sense amplifier
Solution Approach 1:
The patent applies dynamics by making the power supply voltage to the amplification module variable rather than fixed. The controllable power module dynamically adjusts the voltage between a first voltage (during writing phase) and a second voltage (during amplification phase), allowing the system to switch between different operational states to resolve the contradiction between amplification capability and writing success.
Solution Approach 2:
The patent changes the voltage parameter supplied to the amplification module based on the operational phase. By controlling the power module to provide different voltage levels (first voltage during writing, second voltage during amplification), the system adapts the amplification strength to match the current operation requirements, enabling both successful writing and effective amplification.
2Power
If the write circuit drive capability is increased, then the ability to pull bit line voltages is improved, but the device complexity increases
Solution Approach 1:
The patent introduces a controllable power module as an intermediary between the power supply and the amplification module. This intermediary component controls the voltage supplied to the amplification module, effectively mediating the interaction between the write circuit and amplification circuit without requiring direct modification of the write circuit's drive capability, thus avoiding increased complexity in the write circuit itself.
Data Source
AI summary
A sense amplifier includes: an amplification module, configured to amplify a voltage difference between a bit line and a reference bit line when the sense amplifier is in an amplification phase; a controllable power module, connected to the amplification module and configured to supply a first voltage to the amplification module when the sense amplifier is in a writing phase, and supply a second voltage to the amplification module when the sense amplifier is in a non-writing phase, and the second voltage is greater than the first voltage; and a writing module, connected to the bit line and the reference bit line and configured to pull the voltage difference between the bit line and the reference bit line according to to-be-written data when the sense amplifier is in the writing phase.