AT24C64 from IDCHIP, 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	A0	input	Device address input bit 0. Hard-wired to VCC or GND to set the lower bit of the 7-bit I2C slave address, allowing up to 8 devices on the same I2C bus.
2	A1	input	Device address input bit 1. Hard-wired to VCC or GND to set the middle bit of the 7-bit I2C slave address.
3	A2	input	Device address input bit 2. Hard-wired to VCC or GND to set the upper bit of the 7-bit I2C slave address.
4	GND	power_in	Ground reference (0V, power negative).
5	SDA	bidirectional	I2C serial data line, open-drain. Requires an external pull-up resistor (typ. 10kΩ) to VCC. Transfers address and data bytes between master and EEPROM.
6	SCL	input	I2C serial clock input from the bus master. Supports up to 1MHz at Vcc=2.7V/5V and 400kHz at Vcc=1.8V. Requires an external pull-up resistor to VCC.
7	WP	input	Hardware write protect input. When tied to VCC, write operations to the array are inhibited; when tied to GND, normal read/write is allowed.
8	VCC	power_in	Positive supply voltage, 1.8V to 5.5V (absolute max 5.5V). Decouple to GND with a 100nF (typ. 1uF) ceramic capacitor close to the pin.

Key specifications

Parameter	Value
Manufacturer	IDCHIP
Package	SOP-8
Category	Memory
Pins	8

Ordering variants

AT24C64SOP-8
AT24C64DIP-8

CAD (KiCad official)

Symbol: AT24C64
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
`at24c64.step`	122 KB	You want the bare part, or you mark your own boards.
`at24c64-etched.step`	1.5 MB	You want the part with `AT24C64` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 378 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: IDCHIP datasheet (12 pp, sha256 5aee857d33cea1b6, 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