AT24C02CMM from HGSEMI, in a MSOP-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	Device address input bit 0. Hard-wired to VCC or GND to set the lower bit of the I2C slave address, allowing up to eight AT24C02C devices on one bus. Internally pulled down to GND if left floating.
2	E1	input	Device address input bit 1. Hard-wired to VCC or GND to set a bit of the I2C slave address. Internally pulled down to GND if left floating.
3	E2	input	Device address input bit 2. Hard-wired to VCC or GND to set the upper bit of the I2C slave address. Internally pulled down to GND if left floating.
4	GND	power_in	Ground reference for the power supply. Must be tied to system ground.
5	SDA	bidirectional	Serial Data. Open-drain bidirectional I2C data line; requires an external pull-up to VCC. Data is latched on the rising edge of SCL and driven on the falling edge.
6	SCL	input	Serial Clock. I2C clock input driven by the bus master; controls data transfer on SDA. Supports up to 400 kHz standard and 1 MHz high-speed rates.
7	WP	input	Hardware Write Protection input. When tied to VCC the entire memory array (and identification page) is write-protected (device becomes read-only); when tied to GND writes are enabled. Internally pulled down to GND if left floating.
8	VCC	power_in	Device power supply, 1.7 V to 5.5 V. Standby current 1 uA max, read/write current 0.5 mA max.

Key specifications

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

Ordering variants

AT24C02CMM/TR
AT24C02CMMAT24C02CN
AT24C02CMMAT24C02CM/TR
AT24C02CMMAT24C02CMT/TR
AT24C02CMMAT24C02CDQ/TR
AT24C02CMMAT24C02CM5/TR

CAD (KiCad official)

Symbol: AT24C02CMM
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`at24c02cmm.step`	123 KB	You want the bare part, or you mark your own boards.
`at24c02cmm-etched.step`	1.9 MB	You want the part with `AT24C02CMM` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 489 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 (27 pp, sha256 0bf607f240ed128f, 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