SPECIFICATIONS

Product Description

The W25Q80/16/32/64/128 serial flash memory provides a storage solution for systems with limited space, pin count, and power consumption. The 25Q series offers flexibility and performance far beyond ordinary serial flash devices. They are ideal for code shadowing to RAM, executing code directly from the SPI interface, and storing voice, text, and data. The devices operate from a single 2.7V to 3.6V power supply and consume as little as 1μA in power-down state. All devices are available in space-saving packages. The W25Q80/16/32/64/128 arrays consist of 4,096/8,192/16,384/32,768/65,536 programmable pages, each with 256 bytes. The W25Q80/16/32/64/128 feature 256/512/1,024/2,048/4,096 erasable sectors and 16/32/64/128/256 erasable blocks respectively. The 4KB small sectors provide greater flexibility for applications requiring data and parameter storage. The W25Q series supports the standard Serial Peripheral Interface (SPI) with clock frequencies up to 104MHz.

Features:

• Interface Type: Standard SPI interface

• Operating Voltage: 2.7–3.6V

• Operating Temperature: -40°C to +85°C

• Endurance: Minimum 100,000 program/erase cycles, with data retention exceeding 20 years

Applications:

• Embedded Storage: Ideal for microcontrollers, industrial control boards, and other scenarios requiring non-volatile storage

• IoT Devices: Data storage for routers, smart hardware, and more

• Firmware Storage: Direct storage of program code or font data (e.g., OLED display Chinese character dot matrix)
  
  II. Product Specifications
  

  Product Dimensions (mm × mm)
  16 × 15

  Note:

• The WP (Write Protect) and HOLD pins are tied to VCC by default. This configuration does not support Quad mode; the module operates in standard single-line SPI mode only (i.e., no dual or quad SPI support).
   

  III. Pin Description

  VCC: Positive power supply input
  GND: Ground
  CS: Chip select input
  CLK: Serial clock input
  DO: Master data output / Slave data input (data output from the device)
  DI: Master data input / Slave data output (data input to the device)

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  IV. Important Notes

  Page write cannot cross page boundaries. If the data length to be written exceeds 256 bytes, the write operation will wrap around to the beginning of the same page, overwriting existing data at the start.

  Erase must be performed by sector or block. Byte-by-byte erasure is not supported.

  Power-off protection: A power loss during a write operation may corrupt data on the page. It is recommended to perform a read-back verification after each write operation.

  Compatibility considerations: The W25Qxx series is pin-compatible with other Flash brands such as GD25Qxx and XT25Fxx. However, some instructions, such as protection mechanisms, may differ slightly. Please refer to the respective datasheets for details.

  

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  Model	Capacity (Mbit)	Capacity (MByte)	Page Size (Bytes)	Sector Size (KB)	Block Size (KB)	Total Pages	Sectors (64KB)	Blocks (64KB)	Interface	Operating Voltage
  W25Q80	8	1	256	4	64	4096	256	16	SPI	2.7–3.6V
  W25Q16	16	2	256	4	64	8192	512	32	SPI	2.7–3.6V
  W25Q32	32	4	256	4	64	16384	1024	64	SPI	2.7–3.6V
  W25Q64	64	8	256	4	64	32768	2048	128	SPI	2.7–3.6V
  W25Q128	128	16	256	4	64	65536	4096	256	SPI	2.7–3.6V