component
BL24C128A-PARC
Public Made by Adomby adom
BL Shanghai Belling EEPROM, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownBL24C128A-PARC
BL Shanghai Belling · EEPROM · SOP-8
BL24C128A-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 | Hardwired device address input bit 0. Compared against A0 in the I2C device address byte to allow up to 8 chips on one bus. Internally biased to logic low if left floating. |
| 2 | A1 | input | Hardwired device address input bit 1. Compared against A1 in the I2C device address byte. Internally biased to logic low if left floating. |
| 3 | A2 | input | Hardwired device address input bit 2. Compared against A2 in the I2C device address byte. Internally biased to logic low if left floating. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | SDA | bidirectional | I2C serial data line. Open-drain, bidirectional; requires an external pull-up resistor. May be wire-ORed with other open-drain/open-collector devices on the bus. |
| 6 | SCL | input | I2C serial clock input. Positive edge clocks data into the EEPROM; negative edge clocks data out. Schmitt-triggered, filtered input; supports 100 kHz, 400 kHz, and 1 MHz operation. |
| 7 | WP | input | Write Protect. Tie to GND for normal read/write operation. Tie to VCC to hardware write-protect the full 128 Kbit array. |
| 8 | VCC | power_in | Positive supply, 1.7 V to 5.5 V. Decouple to GND with a ceramic capacitor placed close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOP-8 |
| Category | Memory |
| Pins | 8 |
Ordering variants
BL24C128A-PARC
CAD (KiCad official)
- Symbol:
BL24C128A-PARC - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
bl24c128a-parc-etched.step/bl24c128a-parc-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl24c128a-parc.step/bl24c128a-parc.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
bl24c128a-parc.step |
122 KB | You want the bare part, or you mark your own boards. |
bl24c128a-parc-etched.step |
2.6 MB | You want the part with BL24C128A-PARC already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 644 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 (18 pp, sha256
46781fd0224cef21, 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).