What is the Difference Between Embedded and External Memory Devices?

The main difference between embedded and external memory devices lies in their integration with the chip and their purpose in the system. Here are the key differences:

• Embedded Memory Devices: These are memory devices that are integrated into the chip along with the logic core. They support the logic core to perform its functions and eliminate the need for inter-chip communication. Examples of embedded memory devices include embedded SRAM (Static Random Access Memory) and ROM (Read-Only Memory).
• External Memory Devices: These are memory devices that reside outside the chip and are used as permanent storage for large quantities of data. Examples of external memory devices include hard disks, CD-ROMs, and standalone RAM.

Embedded memory devices are more widely used than external or standalone SRAM and ROM due to their integration with the chip, which allows for faster access and reduced power consumption. On the other hand, external memory devices provide additional storage capacity and are often used when larger amounts of data need to be stored or when the memory requirements exceed the capacity of embedded memory.

In summary, embedded memory devices are integrated into the chip and serve as part of the system's logic core, while external memory devices reside outside the chip and provide additional storage capacity.

Comparative Table: Embedded vs External Memory Devices

Here is a table summarizing the differences between embedded and external memory devices:

Embedded memory devices are integrated into the chip and are non-standalone memory components. They are often used in VLSI devices and serve various purposes, such as primary cache or non-volatile memory. On the other hand, external memory devices are stand-alone memory devices not integrated into the chip, such as hard drives, CD/DVD ROM, RAM, and ROM. These devices are typically used for permanent storage of large quantities of data and external data memory.