component
BL5372 SOP8
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.
← Commit history
README.mdadded+45@@ -0,0 +1,45 @@+# BL5372 SOP8++**BL Shanghai Belling** · Real Time Clocks · SOP-8++BL5372 SOP8 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 | output | Interrupt output B; open-drain output capable of 32.768kHz square wave, periodic interrupt pulses, or ALARM-B alarm signal; defaults to 32.768kHz square wave on power-up; requires external pull-up resistor. |+| 2 | SCL | input | I2C serial clock input line; maximum data clock frequency 100kHz; requires external pull-up resistor. |+| 3 | SDA | bidirectional | I2C serial data bidirectional line for two-wire interface; input/output capability for data transfer; requires external pull-up resistor. |+| 4 | GND | power_in | Power supply ground pin; must connect to system ground; requires bypass capacitor placement near pin. |+| 5 | INTRA | output | Interrupt output A; open-drain output for periodic interrupt or alarm signals (ALARM-A, ALARM-B); requires external pull-up resistor. |+| 6 | OSCOUT | output | Crystal oscillator output; connects to external 32.768kHz or 32kHz crystal oscillator with load capacitor for resonant circuit operation. |+| 7 | OSCIN | input | Crystal oscillator input; connects to external 32.768kHz or 32kHz crystal; do not place load capacitor at input pin as it may cause crystal oscillation to stop; place capacitor only at OSCOUT. |+| 8 | VDD | power_in | Operating power supply voltage; supply range 1.8V to 5.5V; typical working current 0.4µA at 3.6V and 25°C; requires bypass capacitor. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | SOP-8 |+| Category | Clock/Timing |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `BL5372 SOP8`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)+- 3D model files: `bl5372-sop8-etched.step` / `bl5372-sop8-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bl5372-sop8.step` / `bl5372-sop8.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [BL Shanghai Belling datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603065455699640320) (32 pp, sha256 `a9ad06341198c55e`, retrieved 2026-09-22, 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](docs/bl5372-sop8-datasheet.pdf)
page.jsonadded+143@@ -0,0 +1,143 @@+{+ "slug": "bl5372-sop8",+ "version": "0.1.0",+ "type": "component",+ "description": "BL Shanghai Belling Real Time Clocks, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "clock-timing",+ "bl5372 sop8",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "bl5372-sop8.kicad_sym",+ "bl5372-sop8.kicad_mod",+ "bl5372-sop8.glb",+ "bl5372-sop8.step",+ "bl5372-sop8.lbr",+ "docs/hero.png",+ "docs/bl5372-sop8-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "BL5372 SOP8",+ "manufacturer": "BL Shanghai Belling",+ "package": "SOP-8",+ "pin_count": 8,+ "category": "Clock/Timing",+ "subcategory": "Real Time Clocks",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603065455699640320",+ "parts": {+ "symbol": "bl5372-sop8.kicad_sym",+ "footprint": "bl5372-sop8.kicad_mod",+ "model_3d": "bl5372-sop8-etched.glb",+ "model_3d_plain": "bl5372-sop8.glb",+ "model_3d_step": "bl5372-sop8-etched.step",+ "model_3d_step_plain": "bl5372-sop8.step",+ "lbr": "bl5372-sop8.lbr"+ },+ "distributor_links": {+ "lcsc": "C7462443"+ },+ "pins": [+ {+ "number": "1",+ "name": "INTRB",+ "type": "output",+ "description": "Interrupt output B; open-drain output capable of 32.768kHz square wave, periodic interrupt pulses, or ALARM-B alarm signal; defaults to 32.768kHz square wave on power-up; requires external pull-up resistor."+ },+ {+ "number": "2",+ "name": "SCL",+ "type": "input",+ "description": "I2C serial clock input line; maximum data clock frequency 100kHz; requires external pull-up resistor."+ },+ {+ "number": "3",+ "name": "SDA",+ "type": "bidirectional",+ "description": "I2C serial data bidirectional line for two-wire interface; input/output capability for data transfer; requires external pull-up resistor."+ },+ {+ "number": "4",+ "name": "GND",+ "type": "power_in",+ "description": "Power supply ground pin; must connect to system ground; requires bypass capacitor placement near pin."+ },+ {+ "number": "5",+ "name": "INTRA",+ "type": "output",+ "description": "Interrupt output A; open-drain output for periodic interrupt or alarm signals (ALARM-A, ALARM-B); requires external pull-up resistor."+ },+ {+ "number": "6",+ "name": "OSCOUT",+ "type": "output",+ "description": "Crystal oscillator output; connects to external 32.768kHz or 32kHz crystal oscillator with load capacitor for resonant circuit operation."+ },+ {+ "number": "7",+ "name": "OSCIN",+ "type": "input",+ "description": "Crystal oscillator input; connects to external 32.768kHz or 32kHz crystal; do not place load capacitor at input pin as it may cause crystal oscillation to stop; place capacitor only at OSCOUT."+ },+ {+ "number": "8",+ "name": "VDD",+ "type": "power_in",+ "description": "Operating power supply voltage; supply range 1.8V to 5.5V; typical working current 0.4µA at 3.6V and 25°C; requires bypass capacitor."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-4-6",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Pin numbering discrepancy: The pinout diagram on PAGE 2 appears to show a different pin-to-signal as"+ ],+ "pages_sent": 32,+ "cost_usd": 0.2859,+ "at": "2026-09-22T07:50:23"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603065455699640320",+ "pages": 32,+ "sha256": "a9ad06341198c55e",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 8,+ "described": 8,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}