component
BL5372
Public Made by Adomby adom
BL Shanghai Belling Real Time Clocks, SOP-8. Pinout cross-checked by two models against the datasheet, 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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README
markdownBL5372
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl5372.step/bl5372.glbare 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).