MX25L3233FM1I-08G from MXIC Macronix, 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 (active low). Enables/disables the device on the SPI bus; must be driven low to start a command and high to end it, returning the device to standby.
2	SO/SIO1	bidirectional	Serial Data Output in single-I/O (1xI/O) mode; serial data input/output (SIO1) in dual (2xI/O) and quad (4xI/O) modes. Tri-stated when CS# is high.
3	WP#/SIO2	bidirectional	Active-low Write Protect input in single/dual-I/O modes (used with SRWD bit to lock the status register in Hardware Protected Mode); becomes SIO2 (data I/O bit 2) in quad-I/O mode. Internal pull-up when unconnected.
4	GND	power_in	Ground reference for the device (0V).
5	SI/SIO0	bidirectional	Serial Data Input in single-I/O (1xI/O) mode; serial data input/output (SIO0) in dual (2xI/O) and quad (4xI/O) modes.
6	SCLK	input	Serial clock input. Supports SPI Mode 0 and Mode 3 up to 133MHz (with the appropriate dummy-cycle configuration for fast-read commands).
7	HOLD#/SIO3	bidirectional	Active-low HOLD input in single/dual-I/O modes (pauses serial communication without deselecting the device); becomes SIO3 (data I/O bit 3) in quad-I/O mode. Internal pull-up when unconnected.
8	VCC	power_in	+3.0V power supply pin. Operating range 2.65V to 3.6V for read, erase, and program.

Key specifications

Parameter	Value
Manufacturer	MXIC Macronix
Package	SOP-8
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

MX25L3233FM1I-08G
MX25L3233FM1I-08Q
MX25L3233FM1I-08GFM2I-08G
MX25L3233FM1I-08GFM2I-08Q
MX25L3233FM1I-08GFZBI-08G
MX25L3233FM1I-08GFZBI-08Q
MX25L3233FM1I-08GFZNI-08G
MX25L3233FM1I-08GFZNI-08Q
MX25L3233FM1I-08GFZCI-08Q
MX25L3233FM1I-08GFMI-08G

CAD (KiCad official)

Symbol: MX25L3233FM1I-08G
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
`mx25l3233fm1i-08g.step`	122 KB	You want the bare part, or you mark your own boards.
`mx25l3233fm1i-08g-etched.step`	3.3 MB	You want the part with `MX25L3233FM1I-08G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 808 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: MXIC Macronix datasheet (86 pp, sha256 48c831d2dc0d30a6, 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