HG24C32MM 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	Slave address input bit 0. Combined with E1/E2 to give up to 8 devices on the same I²C bus. Internally pulled down to Vss if left floating.
2	E1	input	Slave address input bit 1. Combined with E0/E2 for hardware address selection. Internally pulled down to Vss if left floating.
3	E2	input	Slave address input bit 2. Combined with E0/E1 for hardware address selection. Internally pulled down to Vss if left floating.
4	Vss	power_in	Ground reference for Vcc supply.
5	SDA	bidirectional	I²C serial data input/output. Open-drain; requires external pull-up. Wire-OR compatible with other open-drain devices.
6	SCL	input	I²C serial clock input. Positive edge clocks data in; negative edge clocks data out. Supports up to 400 kHz (1 MHz in high-speed mode).
7	WCB	input	Write Control, active low. Tie to Vss to allow normal writes; tie to Vcc to inhibit all memory write operations. Internally pulled down to Vss if left floating.
8	VCC	power_in	Supply voltage input, 1.7 V to 5.5 V.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

HG24C32MM/TR
HG24C32N
HG24C32M/TR
HG24C32MT/TR
HG24C32DQ3/TR
HG24C32M5/TR

CAD (KiCad official)

Symbol: HG24C32MM
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 (20 pp, sha256 a83336a282838dca, 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