component
XL1307
Public Made by Adomby adom
XINLUDA Real-time Clocks (RTC), SOP-8. Pinout extracted from 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
markdownXL1307
XINLUDA · Real-time Clocks (RTC) · SOP-8
XL1307 from XINLUDA, 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 | X1 | input | Connection to a standard 32.768 kHz quartz crystal (CL = 12.5 pF). X1 is the input to the internal oscillator and can alternatively be driven by an external 32.768 kHz oscillator; in that case X2 must be left floating. |
| 2 | X2 | output | Connection to the opposite terminal of the 32.768 kHz quartz crystal. X2 is the oscillator output; leave floating when an external oscillator drives X1. |
| 3 | VBAT | power_in | Backup supply input for a standard 3 V lithium cell or other energy source (recommended 2.0 V to 3.5 V). Battery must be tied directly (no series diodes). If no backup is used, VBAT must be grounded. Power-fail trip point VPF = 1.25 × VBAT nominal. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | SDA | bidirectional | I2C serial data input/output. Open-drain output requiring an external pull-up resistor; pull-up voltage may be up to 5.5 V regardless of VCC. |
| 6 | SCL | input | I2C serial clock input used to synchronize data movement on the serial interface. Requires an external pull-up; pull-up voltage may be up to 5.5 V regardless of VCC. fSCL up to 100 kHz. |
| 7 | SQW/OUT | output | Square-wave/output driver. When SQWE = 1, outputs one of four selectable frequencies (1 Hz, 4 kHz, 8 kHz, 32 kHz). Open-drain; requires external pull-up (up to 5.5 V). Operates from either VCC or VBAT. May be left floating if unused. |
| 8 | VCC | power_in | Primary power supply, 4.5 V to 5.5 V (5.0 V nominal). When VCC > 1.25 × VBAT the device is fully accessible; below this threshold reads and writes are inhibited but timekeeping continues from VBAT. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | XINLUDA |
| Package | SOP-8 |
| Category | RTC |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
XL1307 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
xl1307-etched.step/xl1307-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xl1307.step/xl1307.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: XINLUDA datasheet (15 pp, sha256
3c124bb9d9354515, 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).