BL24C512A-PARC from BL Shanghai Belling, 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. Hardwired to VCC or GND to set the chip's 3-bit slave-address field, allowing up to eight BL24C512A devices on one I2C bus. Internally biased low if left floating.
2	A1	input	Device address input bit 1. Hardwired to VCC or GND to set the chip's 3-bit slave-address field. Internally biased low if left floating.
3	A2	input	Device address input bit 2. Hardwired to VCC or GND to set the chip's 3-bit slave-address field. Internally biased low if left floating.
4	GND	power_in	Ground reference for the device.
5	SDA	bidirectional	I2C serial data. Bi-directional open-drain pin for transferring address and data words in and out of the EEPROM; requires an external pull-up resistor to VCC and may be wire-ORed with other open-drain devices on the bus.
6	SCL	input	I2C serial clock input. Positive edges clock data into the EEPROM; negative edges clock data out. Up to 1 MHz.
7	WP	input	Write Protect. When tied to GND, normal read/write operations are enabled. When tied to VCC, hardware write protection is enabled for the full 512 Kbit array.
8	VCC	power_in	Positive supply voltage input for the EEPROM core and I/O.

Key specifications

Parameter	Value
Manufacturer	BL Shanghai Belling
Package	SOP-8
Category	Memory
Pins	8

Ordering variants

BL24C512A-PARC
BL24C512A-PARCPART
BL24C512A-PARCPARS
BL24C512A-PARCPATC
BL24C512A-PARCPATS
BL24C512A-PARCDA
BL24C512A-PARCSF
BL24C512A-PARCNT

CAD (KiCad official)

Symbol: BL24C512A-PARC
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
`bl24c512a-parc.step`	122 KB	You want the bare part, or you mark your own boards.
`bl24c512a-parc-etched.step`	2.5 MB	You want the part with `BL24C512A-PARC` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 622 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: BL Shanghai Belling datasheet (17 pp, sha256 046de910d8da4355, 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