XT25F128FWOIGT-W from XTX, in a WSON-8-EP(5x6). 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. Drives the device into active mode when low and standby (deselected) when high. Required for all SPI/Dual/Quad transactions.
2	SO(IO1)	bidirectional	Serial Data Output in Standard SPI mode; becomes bidirectional I/O line IO1 in Dual/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 together with the SRP/BP bits to hardware-lock the status register and array. Becomes bidirectional I/O line IO2 when Quad SPI mode is enabled (QE=1).
4	VSS	power_in	Device ground reference (0 V).
5	SI(IO0)	bidirectional	Serial Data Input in Standard SPI mode; becomes bidirectional I/O line IO0 in Dual/Quad SPI modes. Input data is latched on the rising edge of SCLK.
6	SCLK	input	Serial Clock input. Supports SPI modes 0 and 3 up to 133 MHz. Input data on SI/IOx is latched on the rising edge; SO/IOx changes on the falling edge (SDR).
7	HOLD#/RESET#(IO3)	bidirectional	Multi-function pin. In Standard/Dual SPI with QE=0, acts as HOLD# (pauses serial communication when low) or RESET# (asserts a hardware reset when low, tRLRH>=1 us, tRB<=12 ms) depending on the HOLD/RST status register bit. When QE=1 (Quad SPI enabled), the pin becomes bidirectional I/O line IO3 and the HOLD#/RESET# functions are disabled.
8	VCC	power_in	Core and I/O power supply, 2.7 V to 3.6 V (nominal 3.3 V). Typical active read current 8 mA at 80 MHz; deep power-down current 0.5 uA typical.

Key specifications

Parameter	Value
Manufacturer	XTX
Package	WSON-8-EP(5x6)
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

XT25F128FWOIGT-W
XT25F128FWOIGA-W
XT25F128FSSIGU-W

CAD (KiCad official)

Symbol: XT25F128FWOIGT-W
Footprint: Package_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm
3D model: WSON-8-EP(5x6) (KiCad packages3D, STEP)

Provenance

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

Datasheet: XTX datasheet (61 pp, sha256 1c516635c433e561, 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