HG24C08CMM 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	NC	unconnected	No internal connection. May be left floating or tied to GND.
2	NC	unconnected	No internal connection. May be left floating or tied to GND.
3	E2	input	Device address input. Hard-wired to VCC or GND to set the E2 address bit for bus multi-drop (up to 8 devices with two device-type identifiers). Internally pulled down to GND when left floating.
4	GND	power_in	Ground reference for the power supply. Connect to system ground.
5	SDA	bidirectional	Serial data. Open-drain bidirectional I/O for the 2-wire I2C interface; requires an external pull-up to VCC. Data is transferred MSB-first, latched on rising SCL and driven on falling SCL.
6	SCL	input	Serial clock input for the 2-wire I2C interface. Supports up to 400 kHz standard and 1 MHz high-speed transfer rates; requires an external pull-up to VCC.
7	WP	input	Hardware write-protect input. Tie to VCC to make the whole memory array read-only; tie to GND to enable writes. Internally pulled down to GND when left floating. When driven high, only the device address and word address bytes are ACKed; data bytes are NACKed.
8	VCC	power_in	Device power supply, 1.7 V to 5.5 V. Operation outside this range may produce spurious results and must be avoided.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

HG24C08CMM
HG24C08CMM/TR
HG24C08CN
HG24C08CM/TR
HG24C08CMT/TR
HG24C08CDQ/TR
HG24C08CM5/TR

CAD (KiCad official)

Symbol: HG24C08CMM
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: HGSEMI datasheet (25 pp, sha256 90e20e751b466cc6, 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