AT24C512CDRG from HANSCHIP semiconductor, 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	E0	input	Device address input bit 0. Hard-wired to VCC or GND to set the 3-bit hardware slave address, allowing up to eight devices on a single I2C bus. Internally pulled down to GND if left floating.
2	E1	input	Device address input bit 1. Hard-wired to VCC or GND to set the 3-bit hardware slave address. Internally pulled down to GND if left floating.
3	E2	input	Device address input bit 2. Hard-wired to VCC or GND to set the 3-bit hardware slave address. Internally pulled down to GND if left floating.
4	GND	power_in	Ground reference for the power supply. Must be connected to the system ground.
5	SDA	bidirectional	Serial Data. Open-drain bidirectional I/O used to serially transfer data to and from the device. Requires an external pull-up resistor to VCC.
6	SCL	input	Serial Clock. Input clock provided by the I2C master. Command and input data on SDA are latched on the rising edge of SCL; output data on SDA is clocked out on the falling edge of SCL.
7	WP	input	Write Protect. When tied to VCC, the entire memory array becomes write-protected (read-only); when tied to GND or left floating, write operations are enabled. When driven high, device and word address bytes are ACKed but data bytes are not.
8	VCC	power_in	Device power supply, 1.7V to 5.5V. Operations at invalid VCC voltages may produce spurious results.

Key specifications

Parameter	Value
Manufacturer	HANSCHIP semiconductor
Package	SOP-8
Category	Memory
Pins	8

Ordering variants

AT24C512CDRG
AT24C512CDRG4
AT24C512CDRGCPG
AT24C512CDRGCDGKRG
AT24C512CDRGCPWRG
AT24C512CDRGCDQRG

CAD (KiCad official)

Symbol: AT24C512CDRG
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
`at24c512cdrg.step`	122 KB	You want the bare part, or you mark your own boards.
`at24c512cdrg-etched.step`	2.3 MB	You want the part with `AT24C512CDRG` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 577 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: HANSCHIP semiconductor datasheet (26 pp, sha256 377ea6b5ad441c21, 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