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Freedom_Neo
Senior
March 3, 2022
Solved

Using OCTOSPI with 4 pins. (IO[7:4])

  • March 3, 2022
  • 4 replies
  • 2360 views

I use MX25LM51245GMI00 flash. But I dont have few pins so I use 4 pins for OCTO SPI. Does it work 4 pins OCTOSPI? What do I it for 4 pins OCTOSPI. What changes do I need to make

0693W00000KbHQAQA3.png

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Best answer by Freedom_Neo

I dont see quad-spi mode. This FLASH for octo spi. MX25LM51245GMI00 dont support quad-spi. :(

4 replies

TDK
March 3, 2022

That chip needs all 8 data lines connected per the datasheet. It has a 1-bit mode and an 8-bit mode.

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Freedom_Neo
Senior
March 3, 2022

I am using below development tools

MCU: STM32H7B3IIT6

IDE: STM32CubeIDE Version: 1.8.0

GUI: TouchGFX Version: 4.18.1

SDRAM: IS45S16800F-7CTLA1-TR

FLASH: MX25LM51245GMI00

What it takes to adapt for QSPI. Can I use the following driver code for QSPI? How can I run it as QSPI.

TDK
March 3, 2022

Open up the datasheet for MX25LM51245GMI00. Do you see a quad-spi mode available?

https://www.macronix.com/Lists/Datasheet/Attachments/7841/MX25LM51245G,%203V,%20512Mb,%20v1.1.pdf

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