MX25L1606EM1I-12G 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	Active-low chip select. Enables serial access to the device when driven low; drives the device into standby mode when high. All commands, addresses, and data are latched relative to CS# framing.
2	SO/SIO1	bidirectional	Serial data output in standard 1x SPI mode (SO), driven on the falling edge of SCLK. In Dual Output (DREAD, opcode 3Bh) mode this pin operates as SIO1, one of the two data lanes for the doubled read throughput.
3	WP#	input	Active-low write protect. When SRWD (status register) is set and WP# is low, the status register write (WRSR) is blocked, enabling hardware-protected block protection settings. Tie high if not used.
4	GND	power_in	Device ground reference (0V) for both core and I/O.
5	SI/SIO0	bidirectional	Serial data input in standard 1x SPI mode (SI), sampled on the rising edge of SCLK for opcode/address/data. In Dual Output Read mode this pin becomes SIO0, the second data output lane.
6	SCLK	input	Serial clock input. Supports SPI Mode 0 and Mode 3. Maximum 86MHz for single I/O reads, 80MHz for dual output reads.
7	HOLD#	input	Active-low hold input. Pauses serial communication (SO is high-Z and SI/SCLK are ignored) without deselecting the device, allowing the SPI bus to be shared. Tie high if unused.
8	VCC	power_in	+3V power supply, 2.7V to 3.6V operating range. Decouple with a local 0.1uF ceramic close to the pin.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

MX25L1606EM1I-12G
MX25L1606EM1I-12GM2I-12G
MX25L1606EM1I-12GPI-12G
MX25L1606EM1I-12GZNI-12G
MX25L1606EM1I-12GZUI-12G
MX25L1606EM1I-12GMI-12G
MX25L1606EM1I-12GXCI-12G

CAD (KiCad official)

Symbol: MX25L1606EM1I-12G
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
`mx25l1606em1i-12g.step`	122 KB	You want the bare part, or you mark your own boards.
`mx25l1606em1i-12g-etched.step`	2.9 MB	You want the part with `MX25L1606EM1I-12G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 718 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 (60 pp, sha256 2b7bf6d131bbca60, 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