HG24C04CMM 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. Leave floating or tie to GND for best noise immunity.
2	E1	input	Device address input bit 1. Hard-wire to VCC or GND to set the slave address bit (E1) used in the I2C device address byte. Internally pulled to GND if left floating.
3	E2	input	Device address input bit 2. Hard-wire to VCC or GND to set the slave address bit (E2) used in the I2C device address byte. Internally pulled to GND if left floating.
4	GND	power_in	Ground reference for the power supply. Connect to system ground.
5	SDA	bidirectional	I2C serial data. Open-drain bidirectional line used to transfer address and data between master and device; requires an external pull-up resistor to VCC.
6	SCL	input	I2C serial clock input. Data on SDA is latched on the rising edge and clocked out on the falling edge of SCL. Requires an external pull-up resistor to VCC.
7	WP	input	Hardware write-protect input. When tied to VCC the entire memory array is write-protected (read-only); when tied to GND writes are enabled. Internally pulled to GND if left floating.
8	VCC	power_in	Device power supply, 1.7 V to 5.5 V. Decouple with a local bypass capacitor to GND.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

HG24C04CMM
HG24C04CMM/TR
HG24C04CMMM
HG24C04CMMM/TR
HG24C04CMMN
HG24C04CMMMT
HG24C04CMMMT/TR
HG24C04CMMDQ
HG24C04CMMDQ/TR
HG24C04CMMM5
HG24C04CMMM5/TR

CAD (KiCad official)

Symbol: HG24C04CMM
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 595b3211a0b1550b, 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