AT24C04M5 from HGSEMI, in a SOT-23-5. 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	SCL	input	Serial clock input. Positive edge clocks data into the EEPROM; negative edge clocks data out. Schmitt-trigger filtered input. Requires an external pull-up to VCC.
2	GND	power_in	Ground reference for the device.
3	SDA	bidirectional	Serial data input/output. Open-drain; may be wire-ORed with other open-drain/open-collector devices. Requires an external pull-up resistor to VCC.
4	VCC	power_in	Supply voltage, 1.7V to 5.5V. Decouple locally to GND.
5	WP	input	Write protect. Tie to GND for normal read/write; tie to VCC to enable hardware write protection of the full array.

Key specifications

Parameter	Value
Manufacturer	HGSEMI
Package	SOT-23-5
Category	Memory
Pins	5

Ordering variants

Same part, different packaging or reel option.

AT24C04M5/TR
AT24C04M5N
AT24C04M5M/TR
AT24C04M5M-4K/TR
AT24C04M5MM/TR
AT24C04M5DQ3/TR
AT24C04M5DQ2/TR
AT24C04M5M8/TR

CAD (KiCad official)

Symbol: AT24C04M5
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: HGSEMI datasheet (19 pp, sha256 436467b62ca478ef, 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