W25X20CLUXIG-TR from Winbond Elec, in a USON8-EP(2x3). 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	Active-low SPI Chip Select. When high the device is deselected and DO/IO0/IO1 are high impedance; when low the device is selected and instructions may be issued. Must track VCC at power-up (pull-up recommended).
2	DO (IO1)	bidirectional	Serial Data Output for Standard SPI (unidirectional, data clocked out on the falling edge of CLK). In Dual-SPI instructions it becomes bidirectional IO1.
3	/WP	input	Active-low Write Protect input. Used with the Status Register SRP, TB, BP1 and BP0 bits to hardware-protect all or a portion of the memory array against Status Register writes.
4	GND	power_in	Device ground reference (0 V).
5	DI (IO0)	bidirectional	Serial Data Input for Standard SPI (unidirectional, instructions/addresses/data clocked in on the rising edge of CLK). In Dual-SPI instructions it becomes bidirectional IO0.
6	CLK	input	Serial Clock input. Provides timing for all serial input and output operations; supports up to 104 MHz. SPI Modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1) are supported.
7	/HOLD	input	Active-low Hold input. When /HOLD is low while /CS is low, DO goes high-impedance and DI/CLK are ignored, allowing the SPI bus to be shared with other devices without resetting the internal state.
8	VCC	power_in	Power supply input, 2.3 V to 3.6 V (also supports 2.5 V and 3 V nominal rails). Active current ~1 mA typ., power-down current <1 uA typ. A decoupling capacitor to GND is recommended.

Key specifications

Parameter	Value
Manufacturer	Winbond Elec
Package	USON8-EP(2x3)
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

W25X20CLUXIG-TRSNIG
W25X20CLUXIG-TRSNJG
W25X20CLUXIG-TRSVIG
W25X20CLUXIG-TRSVJG
W25X20CLUXIG-TRZPIG
W25X20CLUXIG-TRZPJG
W25X20CLUXIG-TR

CAD (KiCad official)

Symbol: W25X20CLUXIG-TR
Footprint: Package_SON:Winbond_USON-8-1EP_3x2mm_P0.5mm_EP0.2x1.6mm
3D model: USON8-EP(2x3) (KiCad packages3D, STEP)

Provenance

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

Datasheet: Winbond Elec datasheet (50 pp, sha256 ff5cc45b56c92c2c, 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