M24C64-FMN6TP from STMicroelectronics, in a SO-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	E0	input	Chip Enable address input bit 0. Tied to VCC or VSS to set the least-significant bit (b1) of the 7-bit I2C device select code, enabling up to 8 devices to share one bus. Left floating = read as 0.
2	E1	input	Chip Enable address input bit 1. Tied to VCC or VSS to set bit b2 of the 7-bit I2C device select code. Left floating = read as 0.
3	E2	input	Chip Enable address input bit 2. Tied to VCC or VSS to set bit b3 of the 7-bit I2C device select code. Left floating = read as 0.
4	VSS	power_in	Ground reference for VCC supply voltage.
5	SDA	bidirectional	Serial Data. Bidirectional open-drain I2C data line; requires an external pull-up resistor to VCC. Transfers data into and out of the device on rising/falling SCL edges.
6	SCL	input	Serial Clock input. Strobes data on SDA(in) and clocks out data on SDA(out). Supports 100 kHz / 400 kHz / 1 MHz I2C bus modes.
7	WC	input	Write Control (active-low). When driven high, writes to the entire memory array are inhibited (device select and address are ACKed, data bytes are NACKed). When driven low or left floating, writes are enabled.
8	VCC	power_in	Supply voltage. For the -F variant: 1.7 V to 5.5 V over -40 to +85 C (also operates down to 1.6 V at 0 to +85 C). Decouple with 10 nF-100 nF close to the VCC/VSS pins.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	SO-8
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

M24C64-FMN6TP
M24C64-FMN6TPBN
M24C64-FMN6TPDW
M24C64-FMN6TPMC
M24C64-FMN6TPMH
M24C64-FMN6TPCS
M24C64-FMN6TPCT
M24C64-FMN6TPCU

CAD (KiCad official)

Symbol: M24C64-FMN6TP
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SO-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`m24c64-fmn6tp.step`	122 KB	You want the bare part, or you mark your own boards.
`m24c64-fmn6tp-etched.step`	2.2 MB	You want the part with `M24C64-FMN6TP` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 557 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: STMicroelectronics datasheet (54 pp, sha256 297d3d80b153effd, retrieved 2026-08-17, tier: manufacturer)
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