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BL24C256A-PARC

Public Made by Adom

by adom

BL Shanghai Belling EEPROM, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs bl24c256a-parc: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
bl24c256a-parc-etched.fit.json bl24c256a-parc: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
bl24c256a-parc-etched.glb bl24c256a-parc: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC b… · Ray
bl24c256a-parc-etched.step bl24c256a-parc: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC b… · Ray
bl24c256a-parc.glb Publish 0.1.0 · Ray
bl24c256a-parc.kicad_mod Publish 0.1.0 · Ray
bl24c256a-parc.kicad_sym Publish 0.1.0 · Ray
bl24c256a-parc.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
bl24c256a-parc.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json bl24c256a-parc: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC b… · Ray
README.md bl24c256a-parc: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

BL24C256A-PARC

BL Shanghai Belling · EEPROM · SOP-8

BL24C256A-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 select one of eight device addresses on the I2C bus. Internal proprietary bias pulls the pin to a logic low if left floating.
2 A1 input Device address input bit 1. Hardwired to VCC or GND to select one of eight device addresses on the I2C bus. Internal proprietary bias pulls the pin to a logic low if left floating.
3 A2 input Device address input bit 2. Hardwired to VCC or GND to select one of eight device addresses on the I2C bus. Internal proprietary bias pulls the pin to a logic low if left floating.
4 GND power_in Ground reference for the device.
5 SDA bidirectional I2C serial data line. Open-drain bidirectional pin for serial data transfer; requires an external pull-up resistor to VCC. May be wire-ORed with other open-drain devices on the bus.
6 SCL input I2C serial clock input. Data is clocked into the EEPROM on the positive edge and clocked out on the negative edge. Supports up to 1 MHz at VCC >= 2.5 V (400 kHz at 1.7-2.5 V).
7 WP input Write Protect. Tie to GND for normal read/write operation. When tied to VCC, the entire 256 Kbit memory array becomes write-protected (hardware data protection).
8 VCC power_in Positive supply voltage, 1.7 V to 5.5 V (2.5 V to 5.5 V for full 1 MHz operation). Typical read current 0.14 mA, write current 0.28 mA at VCC=5.0 V/400 kHz.

Key specifications

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

Ordering variants

  • BL24C256A-PARC
  • BL24C256A-PARCPARS
  • BL24C256A-PARCPATC
  • BL24C256A-PARCPATS
  • BL24C256A-PARCDARS
  • BL24C256A-PARCDATS
  • BL24C256A-PARCDARC
  • BL24C256A-PARCDATC
  • BL24C256A-PARCSFRS
  • BL24C256A-PARCSFTS
  • BL24C256A-PARCSFRC
  • BL24C256A-PARCSFTC
  • BL24C256A-PARCNTRS
  • BL24C256A-PARCNTTS
  • BL24C256A-PARCNTRC
  • BL24C256A-PARCNTTC

CAD (KiCad official)

  • Symbol: BL24C256A-PARC
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: bl24c256a-parc-etched.step / bl24c256a-parc-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl24c256a-parc.step / bl24c256a-parc.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
bl24c256a-parc.step 122 KB You want the bare part, or you mark your own boards.
bl24c256a-parc-etched.step 2.6 MB You want the part with BL24C256A-PARC already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 651 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 (16 pp, sha256 5909eda557ab1e85, 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