MT25QL256ABA1EW7-0SIT TR from Micron Tech, in a W-PDFN-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	S#	input	Chip select (active LOW). Driving S# LOW places the device in active mode; driving HIGH enters standby and tri-states outputs. A falling edge on S# is required prior to each command after power-up.
2	DQ1	bidirectional	Serial I/O bit 1. In legacy x1 SPI mode DQ1 is the MISO (data output). In dual/quad protocols DQ1 is a bidirectional data line carrying address, data, and commands.
3	W#/DQ2	bidirectional	Muxed write-protect / serial I/O bit 2. In standard/dual SPI protocol this pin is W# (active-LOW write protect for the status register nonvolatile bits). In quad protocols (QIO-SPI / extended-SPI with quad instructions) it becomes bidirectional DQ2.
4	VSS	power_in	Core and I/O ground reference (0 V).
5	DQ0	bidirectional	Serial I/O bit 0. In legacy x1 SPI mode DQ0 is the MOSI (data input). In dual/quad protocols DQ0 is a bidirectional data line.
6	C	input	Serial clock. STR: command/address/data inputs latched on rising edge, data output on falling edge. DTR: inputs and outputs on both edges.
7	DQ3/HOLD#	bidirectional	Muxed serial I/O bit 3 / HOLD input. In quad protocols this pin is bidirectional DQ3. In single/dual SPI it functions as HOLD# (active LOW pauses serial communications without deselecting the device). Selected by the '1' pin-configuration ordering code of this MPN.
8	VCC	power_in	Core and I/O power supply. Operating range 2.7 V to 3.6 V (voltage option 'L').

Key specifications

Parameter	Value
Manufacturer	Micron Tech
Package	W-PDFN-8-EP(5x6)
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

MT25QL256ABA1EW7-0SIT TR
MT25QL256ABA1EW7-0SIT TRW9
MT25QL256ABA1EW7-0SIT TRSF
MT25QL256ABA1EW7-0SIT TR12
MT25QL256ABA1EW7-0SIT TR14

CAD (KiCad official)

Symbol: MT25QL256ABA1EW7-0SIT TR
Footprint: Package_DFN_QFN:W-PDFN-8-1EP_6x5mm_P1.27mm_EP3x3mm
3D model: W-PDFN-8-EP(5x6) (KiCad packages3D, STEP)

Provenance

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

Datasheet: Micron Tech datasheet (97 pp, sha256 cc21ea99edd46dde, 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