AT24C04D-SSHM-T from Microchip, 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	NC	unconnected	No Connect. The NC pin is not bonded to a die pad. May be tied to GND or left floating.
2	A1	input	Device address input bit 1. Combined with A2 selects one of up to four devices on the same I2C bus, corresponding to bit 2 of the 7-bit slave address. Internally pulled down to GND via a weak circuit (~0.5xVCC trip point); tie to VCC or GND for deterministic addressing.
3	A2	input	Device address input bit 2. Combined with A1 selects one of up to four devices on the same I2C bus, corresponding to bit 3 of the 7-bit slave address. Internally pulled down to GND via a weak circuit.
4	GND	power_in	Ground reference for the power supply. Connect to system ground.
5	SDA	bidirectional	I2C serial data. Open-drain bidirectional pin; requires an external pull-up resistor (not to exceed 10kΩ). May be wire-ORed with other open-drain/open-collector pins on the same bus.
6	SCL	input	I2C serial clock input. Input data is latched on the rising edge; output data changes on the falling edge. Must be held high or externally pulled up when the serial bus is idle.
7	WP	input	Write Protect. Tie to GND for normal write operation; tie to VCC to inhibit all writes to the array (asserted-high). Weak internal pull-down when floating.
8	VCC	power_in	Device power supply, 1.7V to 3.6V. Operation outside this range may produce spurious results and should not be attempted.

Key specifications

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

Ordering variants

AT24C04D-SSHM-T

CAD (KiCad official)

Symbol: AT24C04D-SSHM-T
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
`at24c04d-sshm-t.step`	122 KB	You want the bare part, or you mark your own boards.
`at24c04d-sshm-t-etched.step`	2.5 MB	You want the part with `AT24C04D-SSHM-T` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 626 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: Microchip datasheet (27 pp, sha256 f4069c4810edcb48, 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