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BL5372

Public Made by Adom

by adom

BL Shanghai Belling Real Time Clocks, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs bl5372: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers bl5372: viewers · Ray 1mo ago
bl5372-etched.fit.json bl5372: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
bl5372-etched.glb bl5372: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body with… · Ray 6d ago
bl5372-etched.step bl5372: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body with… · Ray 6d ago
bl5372.glb Publish 0.1.0 · Ray 1mo ago
bl5372.kicad_mod Publish 0.1.0 · Ray 1mo ago
bl5372.kicad_sym Publish 0.1.0 · Ray 1mo ago
bl5372.lbr Publish 0.1.0 · Ray 1mo ago
bl5372.step Publish 0.1.0 · Ray 1mo ago
package.json bl5372: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body with… · Ray 6d ago
page.json bl5372: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body with… · Ray 6d ago
README.md Initial commit: component/bl5372 · Ray 1mo ago

BL5372

BL Shanghai Belling · Real Time Clocks · SOP-8

BL5372 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 INTRB tri_state Open-drain interrupt output B that can output 32.768 kHz square wave (with 32.768 kHz crystal), periodic interrupt pulse, or alarm B signal; requires external pull-up resistor.
2 SCL input I2C two-wire interface serial clock input line.
3 SDA bidirectional I2C two-wire interface bidirectional serial data line for CPU communication.
4 GND power_in Power supply ground (return path).
5 INTRA tri_state Open-drain interrupt output A that can output periodic interrupt pulse or alarm A/B signals; requires external pull-up resistor.
6 OSCOUT output Crystal oscillator output connected to external 32.768 kHz or 32 kHz crystal oscillator and load capacitor.
7 OSCIN input Crystal oscillator input connected to external 32.768 kHz or 32 kHz crystal oscillator for internal oscillator excitation.
8 VDD power_in Operating power supply voltage input; supports 1.8 V to 5.5 V for timekeeping and I2C communication.

Key specifications

Parameter Value
Manufacturer BL Shanghai Belling
Package SOP-8
Category Clock/Timing
Pins 8

CAD (KiCad official)

  • Symbol: BL5372
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: bl5372-etched.step / bl5372-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl5372.step / bl5372.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: BL Shanghai Belling datasheet (32 pp, sha256 1cc5291a87f941bf, retrieved 2026-09-18, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF