In embedded systems, the term "memory device" refers to an electronic device capable of storing data that can be used to communicate or carry out some function. Memory devices are connected with a variety of different serial protocols, such as SPI which stands for the Serial Peripheral Interface.
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There are a variety of types of SPI memory devices utilized for embedded devices, such as Flash memory as well as EEPROMs. In this post, we'll present a background on the connection and contrast between these two.
The Differences Between Flash Memory and EEPROM
The SPI Flash memory, as well as EEPROMs, are both thoughts of as non-volatile memory. Nonvolatile memory indicates that the device can be capable of keeping data indefinitely without a continuous power supply, which allows devices to keep information even when the power is off.
They are both electronically writable and erasable memory and are microcontroller-based applications, which means they are used either on or off-chip to store information.
Even though Flash memory, as well as EEPROM devices, can both be used to store data used by embedded systems, the design and the methods used for writing, reading, and erasing information slightly differ.
The term EEPROM stands for Electrically Erasable Programmable Read-Only Memory.
is a form of memory that allows data to be written, read, as well as erased on the level of the byte. Flash memory is, however it is a form of EEPROM arranged architecturally in blocks. Data is erased at the block level. It is written or read at the level of the byte.