BL24C64A-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, allowing up to 8 devices on the same I2C bus. Internally biased to logic low if left floating.
2	A1	input	Device address input bit 1. Hardwired to VCC or GND to set the chip's slave address. Internally biased to logic low if left floating.
3	A2	input	Device address input bit 2. Hardwired to VCC or GND to set the chip's slave address. Internally biased to logic low if left floating.
4	GND	power_in	Ground reference for the EEPROM. Connect to system ground (0 V).
5	VCC	power_in	Positive power supply, 1.7 V to 5.5 V. ICC (read at 400 kHz) is typically 0.14 mA; write current is typically 0.28 mA; standby is ~0.03 uA.
6	WP	input	Write Protect input. Tie to GND for normal read/write operation; tie to VCC to write-protect the entire memory array (hardware data protection). Schmitt-trigger, filtered input.
7	SCL	input	I2C serial clock input. Positive edge clocks data into the EEPROM; negative edge clocks data out. Supports up to 1 MHz at VCC >= 2.5 V (400 kHz at VCC < 2.5 V). Requires an external pull-up resistor.
8	SDA	bidirectional	I2C serial data line, bidirectional. Open-drain output; requires an external pull-up resistor. Can be wire-OR'd with other open-drain / open-collector devices on the bus.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

BL24C64A-PARC
BL24C64A-PARCPART
BL24C64A-PARCPACS
BL24C64A-PARCPACT
BL24C64A-PARCDA
BL24C64A-PARCSF
BL24C64A-PARCNT
BL24C64A-PARCCS

CAD (KiCad official)

Symbol: BL24C64A-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
`bl24c64a-parc.step`	122 KB	You want the bare part, or you mark your own boards.
`bl24c64a-parc-etched.step`	2.3 MB	You want the part with `BL24C64A-PARC` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 591 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 6e3ca9f804538b1b, 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