What is the purpose of SPI Flash memory?

SPI flash memory, also known as flash memory, has become widely used in the embedded industry and is commonly used for storage and data transfer in portable devices. Common devices include phones, tablets, and media players, as well as industrial devices such as security systems and medical products.

What is Octal SPI flash?

Octal SPI is the serial synchronous communication protocol developed by Macronix(CMOS MXSMIO®(SERIAL MULTI I/O) Flash memory).

What is a serial flash memory?

A serial Flash device is a non-volatile memory that can be electrically erased and reprogrammed. The code in the serial Flash is not changed by the download process and is write-protected.

Is SPI flash eeprom?

SPI Flash memory and EEPROMs are both considered to be nonvolatile memory. Flash memory, on the other hand, which is a type of EEPROM, is architecturally arranged in blocks where data is erased at the block level and can be read or written at the byte level.

What is the speed of SPI?

The SPI bus can run at high speed, transferring data at up to 60 Mbps over short distances like between chips on a board. The bus is conceptually simple, consisting of a clock, two data lines, and a chip select signal.

What is difference between SPI and Quad SPI?

SPI itself is full-duplex. Dual and Quad SPI are both half-duplex due to using 2-4 pins to send and receive. Switching to Dual or Quad SPI is done via sending a command byte while in Single SPI. The command byte will request a response in either dual or quad mode.

What is Octo SPI?

The OCTOSPI is an AHB/AXI slave mapped on a dedicated AHB/AXI layer. This type of mapping allows the OCTOSPI to be accessible as if it was an internal memory thanks to Memory-mapped mode. connected Octo-SPI Flash or HyperFlash™ memory. • The DMA2D can directly build framebuffer in Octo-SPI SRAM or HyperRAM™.

What is HyperBus?

HyperBus is a parallel bus for somewhat lower spec’ed (low pincount) devices than DDR2/3. It has 8 data lines and a (sometimes differential) clock line. It strobes on both rising and falling edges (double data rate). It is used for flash and for RAM, both can be on the same bus. Read throughput can go up to 400MB/s.

What is the difference between SPI and QSPI?

QSPI is controller extension to SPI bus. It stands for Queued Serial Peripheral Interface. It uses data queue with pointers which allow data transfers without any CPU. In addition it has wrap-around mode which allows continuous transfer of data to/from queue without the need of CPU.