INDUSTRY COMPONENT

Memory Cell

A memory cell is the fundamental storage unit in semiconductor memory arrays, capable of storing one bit of binary data.

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Component Specifications

Definition
A memory cell is the smallest addressable unit in a memory array, typically consisting of a transistor-capacitor pair (DRAM) or multiple transistors (SRAM, Flash) that stores electrical charge or state to represent binary data (0 or 1). It is characterized by its ability to be written to, read from, and retain data, with performance metrics including access time, retention period, and endurance cycles.
Working Principle
Operates by storing electrical charge in a capacitor (DRAM) or maintaining voltage levels through cross-coupled transistors (SRAM). Data is written by applying voltage to set the charge/state, read by sensing the resulting current or voltage, and retained through periodic refresh (DRAM) or stable biasing (SRAM). Non-volatile variants (e.g., Flash) use floating-gate transistors to trap charge for long-term storage.
Materials
Silicon substrate, polysilicon gates, silicon dioxide or high-k dielectric insulators, tungsten or copper interconnects, doped semiconductor regions (n-type/p-type). Advanced nodes may use materials like hafnium-based dielectrics or 3D NAND charge-trap layers.
Technical Parameters
  • Cell Size 6-10 F² (DRAM), 50-100 F² (SRAM), ~4 F² (3D NAND)
  • Endurance Unlimited (SRAM/DRAM), 10^3-10^5 cycles (Flash)
  • Access Time 0.5-10 ns (SRAM), 10-50 ns (DRAM), 25-100 μs (Flash read)
  • Retention Time Milliseconds to seconds (DRAM), years (Flash)
  • Leakage Current pA to nA range
  • Storage Capacity 1 bit per cell (SLC), 2 bits (MLC), 3 bits (TLC), 4 bits (QLC)
  • Operating Voltage 1.0-3.3 V
Standards
ISO/IEC 7816, JEDEC JESD21-C, IEC 60749

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Memory Cell.

semiconductor memory cell DRAM cell SRAM cell Flash memory cell storage unit memory array component bit storage Memory Cell Memory Cell in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Memory Array

A structured arrangement of memory cells organized in rows and columns for data storage within secure memory systems.

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Engineering Analysis

Risks & Mitigation
  • Data retention failure
  • Charge leakage
  • Write endurance exhaustion
  • Soft errors from radiation
  • Process variation defects
FMEA Triads
Trigger: Dielectric breakdown or charge leakage
Failure: Data corruption or loss
Mitigation: Use robust materials, implement error-correcting codes (ECC), and design with redundancy.
Trigger: Electromigration in interconnects
Failure: Increased resistance or open circuit
Mitigation: Optimize layout, use barrier layers, and control current density.
Trigger: Process variations during fabrication
Failure: Performance inconsistency or yield loss
Mitigation: Statistical process control, design for manufacturability (DFM), and post-fabrication testing.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±5% for electrical parameters (e.g., voltage, timing), within specified leakage and retention limits per JEDEC standards.
Test Method
Automated test equipment (ATE) for functional and parametric testing, including write/read cycles, retention tests, and accelerated life testing (ALT) per JESD22-A108.

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between DRAM and SRAM memory cells?

DRAM cells use one transistor and one capacitor, requiring periodic refresh, offering high density but slower access. SRAM cells use six transistors, are faster and do not need refresh, but are larger and more power-hungry.

How does a Flash memory cell store data without power?

Flash cells use a floating-gate transistor that traps electrical charge in an insulated gate, retaining the charge for years without power, making it non-volatile.

What factors affect memory cell reliability?

Key factors include material degradation, charge leakage, write/erase endurance, thermal effects, and radiation-induced soft errors, mitigated through design, testing, and error correction.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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