AT24C32M from HGSEMI, 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	E0	input	Slave address input bit 0. Sets the least-significant bit of the I2C device address (A0), allowing hardware selection between up to 8 devices on the same bus. Internally pulled down to Vss when left floating.
2	E1	input	Slave address input bit 1. Sets the middle bit of the I2C device address (A1). Internally pulled down to Vss when left floating.
3	E2	input	Slave address input bit 2. Sets the most-significant bit of the hardware-selectable I2C device address (A2). Internally pulled down to Vss when left floating.
4	Vss	power_in	Ground reference for the Vcc supply. Connect to the system 0 V rail.
5	SDA	bidirectional	I2C serial data line. Bidirectional open-drain pin used for command, address, and data transfer. Requires an external pull-up resistor to Vcc (typical 1.3 kΩ at 2.5-5.5 V, 10 kΩ at 1.7 V). VOL = 0.4 V max at IOL = 2.1 mA.
6	SCL	input	I2C serial clock input. Positive edge clocks data in and negative edge clocks data out. Maximum clock frequency 100 kHz / 400 kHz / 1 MHz depending on Vcc; Schmitt-triggered with input filtering for noise suppression.
7	WCB	input	Write Control input, active low enable for writes. Tie to Vss to allow normal write operations; tie to Vcc to inhibit all writes to the memory array. Internally pulled down to Vss when left floating (writes enabled).
8	VCC	power_in	Positive supply voltage input. Operating range 1.7 V to 5.5 V. Recommended local decoupling of 100 nF to Vss close to the pin.

Key specifications

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

Ordering variants

AT24C32MN
AT24C32MM/TR
AT24C32MMM/TR
AT24C32MMT/TR
AT24C32MDQ3/TR
AT24C32MM5/TR

CAD (KiCad official)

Symbol: AT24C32M
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
`at24c32m.step`	122 KB	You want the bare part, or you mark your own boards.
`at24c32m-etched.step`	1.7 MB	You want the part with `AT24C32M` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 427 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: HGSEMI datasheet (20 pp, sha256 7e4214ab634175eb, 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