ZD24C64A-SSGMT from Zetta, in a SOP-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	Device address input bit 0. Selects the hardware slave address (bit corresponding to A0 of the 7-bit I2C slave address). Tie directly to VCC or GND; do not leave floating. Up to eight devices can share a bus.
2	A1	input	Device address input bit 1. Selects the hardware slave address. Tie directly to VCC or GND; do not leave floating.
3	A2	input	Device address input bit 2 (corresponds to the fifth bit of the 7-bit I2C slave address). Tie directly to VCC or GND; do not leave floating.
4	GND	power_in	Ground reference for the power supply. Connect to system ground (0V).
5	SDA	bidirectional	Serial Data. Open-drain bidirectional I2C data line used to transfer data to/from the device. Requires an external pull-up resistor to VCC (not to exceed 10 kΩ). May be wire-ORed with other open-drain devices on the bus.
6	SCL	input	Serial Clock. Master-driven clock input used to control data flow. Data on SDA is latched on the rising edge of SCL and clocked out on the falling edge. Must be pulled high with an external pull-up resistor when the bus is idle.
7	WP	input	Write Protect (active high). Tie to GND for normal write operation; tie to VCC to inhibit all writes to memory. If left floating, an internal weak pull-down biases the pin toward GND, but Zetta recommends driving it to a known state.
8	VCC	power_in	Device power supply. Operating range 1.7V to 5.5V (2.5V to 5.5V required for 1 MHz Fast-Mode Plus). Operation outside this range may produce spurious results.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

ZD24C64A-SSGMT

CAD (KiCad official)

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

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`zd24c64a-ssgmt.step`	122 KB	You want the bare part, or you mark your own boards.
`zd24c64a-ssgmt-etched.step`	2.6 MB	You want the part with `ZD24C64A-SSGMT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 638 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

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