ZD25WQ80CTIGT from Zetta, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	CS#	input	Chip Select input (active low). Drive low to select the device and enable SPI/Dual/Quad communication; drive high to deselect and place the device into standby.
2	SO/IO1	bidirectional	Serial Data Output in Standard SPI (SO). Becomes bidirectional I/O line IO1 in Dual and Quad SPI modes. Data is shifted out on the falling edge of SCLK.
3	WP#/IO2	bidirectional	Write Protect input (active low) in Standard/Dual SPI mode - used with SRP bits to hardware-lock the Status Register. Becomes bidirectional IO2 in Quad SPI mode when the non-volatile Quad Enable (QE) bit is set.
4	VSS	power_in	Ground reference for the device. Connect to system ground.
5	SI/IO0	bidirectional	Serial Data Input in Standard SPI (SI) - commands, addresses, and data are latched on the rising edge of SCLK. Becomes bidirectional I/O line IO0 in Dual and Quad SPI modes.
6	SCLK	input	Serial Clock input. Provides the timing for all serial data on IO0..IO3. Supports SPI Mode 0 and Mode 3 up to 104MHz.
7	HOLD#/IO3	bidirectional	Hold input (active low) in Standard/Dual SPI mode - pausing serial communication without deselecting CS#. Becomes bidirectional IO3 in Quad SPI mode when the non-volatile Quad Enable (QE) bit is set.
8	VCC	power_in	Power supply input. Single-supply operating range 1.65V to 3.6V. Requires a local decoupling capacitor near the device.

Key specifications

Parameter	Value
Manufacturer	Zetta
Package	SOP-8
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

ZD25WQ80CTIGTT
ZD25WQ80CTIGTS
ZD25WQ80CTIGTO
ZD25WQ80CTIGTE
ZD25WQ80CTIGTN

CAD (KiCad official)

Symbol: ZD25WQ80CTIGT
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`zd25wq80ctigt.step`	122 KB	You want the bare part, or you mark your own boards.
`zd25wq80ctigt-etched.step`	2.6 MB	You want the part with `ZD25WQ80CTIGT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 628 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Zetta datasheet (66 pp, sha256 1fe1d5d4bda69b48, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF