https://github.com/embeddedalpha/w25qx_flash

STM32Fx Driver for W25Qx Flash
https://github.com/embeddedalpha/w25qx_flash

Last synced: 6 months ago
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STM32Fx Driver for W25Qx Flash

• Host: GitHub
• URL: https://github.com/embeddedalpha/w25qx_flash
• Owner: embeddedalpha
• Created: 2023-02-28T18:25:22.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2023-04-11T00:30:54.000Z (almost 3 years ago)
• Last Synced: 2025-01-12T00:28:39.560Z (about 1 year ago)
• Language: C
• Size: 2.78 MB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# W25Qx Winbond SPI Flash

## W25Q80

[Datasheet](https://www.mouser.com/datasheet/2/949/w25q80dv_dl_revh_10022015-1489677.pdf) 

#### Organized into 4,096 programmable pages of 256-bytes each.

## W25Q16

[Datasheet](https://www.digikey.com/htmldatasheets/production/3221237/0/0/1/W25Q16JV.pdf)

#### Organized into 8,192 programmable pages of 256-bytes each. 

## W25Q32

[Datasheet](https://www.elinux.org/images/f/f5/Winbond-w25q32.pdf) 

#### Organized into 16,384 programmable pages of 256-bytes each

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## GENERAL DESCRIPTION

 

SPI clock frequencies of up to 80MHz are

supported allowing equivalent clock rates of 160MHz for Dual Output and 320MHz for Quad Output

when using the Fast Read Dual/Quad Output instructions.



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## Standard, Dual or Quad SPI

 

 Standard SPI: CLK, /CS, DI, DO, /WP, /Hold

 Dual SPI: CLK, /CS, IO0, IO1, /WP, /Hold

 Quad SPI: CLK, /CS, IO0, IO1, IO2, IO3


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## Highest Performance Serial Flash 

 



 Up to 6X that of ordinary Serial Flash

 80MHz clock operation

 160MHz equivalent Dual SPI

 320MHz equivalent Quad SPI

 40MB/S continuous data transfer rate

 30MB/S random access (32-byte fetch) 

 Comparable to X16 Parallel Flash


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 Software and Hardware Write-Protect

 Top or Bottom, Sector or Block selection

 Lock-Down and OTP protection

 64-Bit Unique ID for each device


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## Functions available for use:

 



 W25QX_Init

 W25Qx_Release_Power_Down

 W25Qx_Write_Byte

 W25Qx_Store_Last_Position

 W25Qx_Read_Last_Write_Poisition

 W25Qx_Chip_Erase

 W25Qx_Block_Erase

 W25Qx_Read_Byte

 W25Qx_Write_Page

 W25Qx_Read_Page

 W25Qx_Fast_Read_Page