ZD24C64A-SSGMB from Zetta, in a SOIC-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	A0	input	Hardware slave address input bit 0. Combined with A1/A2 to select one of up to eight devices sharing the same I2C bus. Tie directly to VCC or GND (do not float).
2	A1	input	Hardware slave address input bit 1. Combined with A0/A2 to select one of up to eight devices sharing the same I2C bus. Tie directly to VCC or GND (do not float).
3	A2	input	Hardware slave address input bit 2. Combined with A0/A1 to select one of up to eight devices sharing the same I2C bus. Tie directly to VCC or GND (do not float).
4	GND	power_in	Ground reference for the power supply. Connect to the system ground plane.
5	SDA	bidirectional	I2C serial data. Open-drain bidirectional line; requires an external pull-up to VCC (not to exceed 10 kΩ). May be wire-ORed with other open-drain devices on the same bus.
6	SCL	input	I2C serial clock input from the bus master. Data on SDA is latched on the rising edge and driven on the falling edge. Must be held high (or pulled high by an external resistor) when the bus is idle.
7	WP	input	Write Protect input, active high. Tie to GND for normal write operation; tie to VCC to inhibit all writes to the memory array. Internally pulled weakly to GND if left unconnected, but should be tied to a known state.
8	VCC	power_in	Device power supply, 1.7 V to 5.5 V. Operation outside the valid VCC range may produce spurious results and should be avoided.

Key specifications

Parameter	Value
Manufacturer	Zetta
Package	SOIC-8
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

ZD24C64A-SSGMB
ZD24C64A-SSGMT
ZD24C64A-SSGMBXGMB
ZD24C64A-SSGMBXGMT
ZD24C64A-SSGMBMAGMB
ZD24C64A-SSGMBMAGMT
ZD24C64A-SSGMBPGMB
ZD24C64A-SSGMBPGMT
ZD24C64A-SSGMBSTGMB
ZD24C64A-SSGMBSTGMT
ZD24C64A-SSGMBCGMB
ZD24C64A-SSGMBCGMT
ZD24C64A-SSGMBUGMB
ZD24C64A-SSGMBUGMT
ZD24C64A-SSGMBU1GMB
ZD24C64A-SSGMBU1GMT

CAD (KiCad official)

Symbol: ZD24C64A-SSGMB
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Zetta datasheet (28 pp, sha256 c667e367e6929b11, 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