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What is Semiconductor Memory?

What is semiconductor memory?

A type of semiconductor device tasked with storing data by electrically controlling the circuit.
Comparing magnetic and optical disc types

  • Fast data Read/Write
  • High memory density
  • Low power consumption
  • Strong against vibration

and other advantages

Volatile memory is memory that loses its data once power is cut off, while non-volatile memory retains data even without power

■Semiconductor Memory Types
Semiconductor Memory Types

* RAM (Random Access Memory) : Enables Read/Write of stored contents

* ROM (Read Only Memory) : Allows only Read operation

■Characteristics of Various Types of Memory
Parameter RAM ROM
Volatility Non Volatility
SRAM DRAM FeRAM Mask ROM EPROM EEPROM FLASH
Data Storage Method Voltage Bias Voltage Bias
+
Refresh
Unnecessary
No. of Read Operations 10 billion
to
1 trillion times
No. of Rewrites 0 times 100 times 100,000 to 1 million times 10,000 to 100,000 times
Write on Substrate Possible Possible Possible × × Possible Possible
Read Time
Write Time
Bit Cost
Larger Capacity
Memory Cell

Stored in a flip flop circuit

Maintains charge in the capacitor

Polarization of the ferroelectric material

Ions implanted in a transistor

Maintains charge in the floating gate

Maintains charge in the floating gate

Maintains charge in the floating gate

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Electronics
Fundamentals