component
XW12A
Public Made by Adomby adom
Sam wing Touch Sensors, SSOP-24-150mil. 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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README
markdownXW12A
Sam wing · Touch Sensors · SSOP-24-150mil
XW12A from Sam wing, in a SSOP-24-150mil. 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 | GND | power_in | Ground connection, power return path |
| 2 | C1 | passive | Internal balanced capacitor interface connection for external 1nf-10nf capacitor (4.7nf recommended) |
| 3 | CSEL | passive | Sensitivity adjustment capacitor interface, external capacitor value 0-100pF determines detection sensitivity (smaller value increases sensitivity) |
| 4 | PAD0 | input | Capacitive touch sensor input for key 0, floating when unused |
| 5 | PAD1 | input | Capacitive touch sensor input for key 1, floating when unused |
| 6 | PAD2 | input | Capacitive touch sensor input for key 2, floating when unused |
| 7 | PAD3 | input | Capacitive touch sensor input for key 3, floating when unused |
| 8 | PAD4 | input | Capacitive touch sensor input for key 4, floating when unused |
| 9 | PAD5 | input | Capacitive touch sensor input for key 5, floating when unused |
| 10 | PAD6 | input | Capacitive touch sensor input for key 6, floating when unused |
| 11 | PAD7 | input | Capacitive touch sensor input for key 7, floating when unused |
| 12 | PAD8 | input | Capacitive touch sensor input for key 8, floating when unused |
| 13 | PAD9 | input | Capacitive touch sensor input for key 9, floating when unused |
| 14 | PAD10 | input | Capacitive touch sensor input for key 10, floating when unused |
| 15 | PAD11 | input | Capacitive touch sensor input for key 11, floating when unused |
| 16 | NC | unconnected | Internal test pin, floating not to be connected to external circuitry |
| 17 | NC | unconnected | Internal test pin, floating not to be connected to external circuitry |
| 18 | INT | tri_state | Key valid output open-drain, drives low when any key is pressed, high-impedance otherwise |
| 19 | ASEL | input | I2C address selection input, determines chip address high=44H, low=42H, floating=40H |
| 20 | AO | output | Analog voltage output proportional to pressed key, outputs VDD when no key pressed, output impedance 20-30kΩ |
| 21 | SCL | input | I2C serial clock input, maximum baud rate 400kbit/s |
| 22 | SDA | bidirectional | I2C serial data input/output line, bidirectional data transmission with pull-up resistor |
| 23 | BUZZ | output | Buzzer drive output at fixed 2.7kHz frequency, sources/sinks 30-40mA at 5V nominal |
| 24 | VDD | power_in | Positive power supply input, operating voltage range 2.5-5.5V |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Sam wing |
| Package | SSOP-24-150mil |
| Category | Sensors |
| Pins | 24 |
CAD (KiCad official)
- Symbol:
XW12A - Footprint:
Package_SO:SSOP-24_5.3x8.2mm_P0.65mm - 3D model: SSOP-24-150mil (KiCad packages3D, STEP)
- 3D model files:
xw12a-etched.step/xw12a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xw12a.step/xw12a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Sam wing datasheet (9 pp, sha256
d41fe6a9c52332e2, 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, 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).