M24C64-RMN6TP from STMicroelectronics, in a SOIC-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. Sets bit b1 of the 7-bit I2C device select code, allowing up to 8 M24C64 devices to share a bus. Must be tied to VCC or VSS; if left floating, reads as 0.
2	E1	input	Chip Enable address input bit 1. Sets bit b2 of the 7-bit I2C device select code. Must be tied to VCC or VSS; if left floating, reads as 0.
3	E2	input	Chip Enable address input bit 2. Sets bit b3 of the 7-bit I2C device select code. Must be tied to VCC or VSS; if left floating, reads as 0.
4	VSS	power_in	Ground reference for VCC supply.
5	SDA	bidirectional	Serial Data input/output for the I2C bus. Open-drain output that must be pulled up to VCC through a resistor (value calculated per bus capacitance and speed). Used to transfer address, data-in, and data-out.
6	SCL	input	Serial Clock input for the I2C bus. Strobes data on SDA(in) and clocks out data on SDA(out). Supports 100 kHz, 400 kHz, and 1 MHz I2C bus modes.
7	WC	input	Write Control, active-low. When driven high, writes to the entire memory array are inhibited (address bytes are still acknowledged, data bytes are not). When driven low or left floating, write operations are enabled.
8	VCC	power_in	Supply voltage input. M24C64-R operating range: 1.8 V to 5.5 V over -40 C to +85 C. Decouple with a 10 nF to 100 nF capacitor between VCC and VSS close to the package.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

M24C64-RMN6TP
M24C64-RMN6TPBN
M24C64-RMN6TPDW
M24C64-RMN6TPMC
M24C64-RMN6TPMH
M24C64-RMN6TPCU
M24C64-RMN6TPCS
M24C64-RMN6TPCT

CAD (KiCad official)

Symbol: M24C64-RMN6TP
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`m24c64-rmn6tp.step`	122 KB	You want the bare part, or you mark your own boards.
`m24c64-rmn6tp-etched.step`	2.3 MB	You want the part with `M24C64-RMN6TP` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 584 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 (53 pp, sha256 bc1cf4e678062294, 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