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xw05a
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Sam wing Touch Sensors, SOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.
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markdownXW05A
Sam wing · Touch Sensors · SOP-16
XW05A from Sam wing, in a SOP-16. 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 / power supply return (0 V reference). |
| 2 | C1 | passive | Internal balance capacitor interface. Connect an external NPO capacitor from this pin to GND, recommended 4.7 nF (range 1 nF-10 nF). |
| 3 | CSEL | passive | Sensitivity adjustment capacitor interface. External capacitor from this pin to GND sets touch sensitivity: smaller value = higher sensitivity; no capacitor = maximum sensitivity; max recommended value 100 pF. |
| 4 | PAD0 | input | Capacitive touch key sense input channel 0. Connect to touch electrode; leave floating if unused. |
| 5 | PAD1 | input | Capacitive touch key sense input channel 1. Connect to touch electrode; leave floating if unused. |
| 6 | PAD2 | input | Capacitive touch key sense input channel 2. Connect to touch electrode; leave floating if unused. |
| 7 | PAD3 | input | Capacitive touch key sense input channel 3. Connect to touch electrode; leave floating if unused. |
| 8 | PAD4 | input | Capacitive touch key sense input channel 4. Connect to touch electrode; leave floating if unused. |
| 9 | OUT4 | output | Channel 4 open-drain (OD) output. Pulls low when PAD4 is touched, returns to high-Z when released. Requires an external pull-up resistor (typ. 10 kΩ). |
| 10 | OUT3 | output | Channel 3 open-drain (OD) output. Pulls low when PAD3 is touched, returns to high-Z when released. Requires an external pull-up resistor (typ. 10 kΩ). |
| 11 | OUT2 | output | Channel 2 open-drain (OD) output. Pulls low when PAD2 is touched, returns to high-Z when released. Requires an external pull-up resistor (typ. 10 kΩ). |
| 12 | OUT1 | output | Channel 1 open-drain (OD) output. Pulls low when PAD1 is touched, returns to high-Z when released. Requires an external pull-up resistor (typ. 10 kΩ). |
| 13 | OUT0 | output | Channel 0 open-drain (OD) output. Pulls low when PAD0 is touched, returns to high-Z when released. Requires an external pull-up resistor (typ. 10 kΩ). |
| 14 | SCL | input | I2C serial clock line (input, slave). Requires an external pull-up resistor to VDD; up to 400 kbit/s. XW05A operates as an I2C slave (read-only) with 7-bit address 0x41. |
| 15 | SDA | bidirectional | I2C serial data line. Open-drain, requires an external pull-up resistor to VDD. Also usable as a periodic low-pulse input (< 20 s intervals) to keep the chip out of sleep mode. |
| 16 | VDD | power_in | Positive supply, 2.5 V to 5.5 V (absolute max 6.0 V). Typical operating current 0.8 mA @ 3.0 V, 1.6 mA @ 5.0 V; sleep current ~90 µA. Bypass with 100 nF close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Sam wing |
| Package | SOP-16 |
| Category | Sensor |
| Pins | 16 |
Ordering variants
XW05ASOP16L
CAD (KiCad official)
- Symbol:
XW05A - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Sam wing datasheet (None pp, sha256
1e55d356048688fa, retrieved 2026-08-17, 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:
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).