component
AR1100-I
Public Made by Adomby adom
Microchip Tech Touch Sensors, SSOP-20-208mil. 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
markdownAR1100-I
Microchip Tech · Touch Sensors · SSOP-20-208mil
AR1100-I from Microchip Tech, in a SSOP-20-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VDD | power_in | Positive power supply pin. |
| 2 | OSC1 | input | Oscillator pin 1 (oscillator connection). |
| 3 | OSC2 | output | Oscillator pin 2 (oscillator connection). |
| 4 | MODE | input | Sensor mode select: GND selects 5-wire, open selects 4-/8-wire. |
| 5 | LED | output | LED control pin. |
| 6 | (Y+) | passive | Sensor connection; not used (n/a) for 4-wire and 5-wire, Y+ for 8-wire sensors. |
| 7 | X+ | passive | Sensor connection. |
| 8 | SY- | passive | Sensor connection. |
| 9 | SX+ | passive | Sensor connection. |
| 10 | UART-TX | output | UART transmit data. |
| 11 | WAKE | input | Wake pin. |
| 12 | UART-RX | input | UART receive data. |
| 13 | SX- | passive | Sensor connection; n/a for 4-wire, WSX for 5-wire, SX- for 8-wire sensors. |
| 14 | X- | passive | Sensor connection. |
| 15 | Y+(SY+) | passive | Sensor connection; Y+ for 4-wire and 5-wire, SY+ for 8-wire sensors. |
| 16 | Y- | passive | Sensor connection. |
| 17 | VUSB | passive | USB internal voltage reference. |
| 18 | USB-D- | bidirectional | USB data I/O (D-). |
| 19 | USB-D+ | bidirectional | USB data I/O (D+). |
| 20 | VSS | power_in | Ground. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SSOP-20-208mil |
| Category | Sensors |
| Pins | 20 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage | VDD | 3.3 | 5 | V | 3.3-5.0V +/- 5% | 3 | |
| Ambient temperature under bias | -40 | 85 | °C | 39 | |||
| Storage temperature | -65 | 150 | °C | 39 | |||
| Voltage on VDD with respect to VSS | VDD | -0.3 | 6.5 | V | 39 | ||
| Voltage on all other pins with respect to VSS | -0.3 | V | -0.3V to (VDD + 0.3V) | 39 | |||
| Total power dissipation | 800 | mW | 39 | ||||
| Maximum current out of VSS pin | 300 | mA | 39 | ||||
| Maximum current into VDD pin | 250 | mA | 39 | ||||
| Input clamp current | 20 | mA | VI < 0 or VI > VDD | 39 | |||
| Maximum output current sunk by any I/O pin | 25 | mA | 39 | ||||
| Maximum output current sourced by any I/O pin | 25 | mA | 39 | ||||
| Standby current (UART) | 10 | uA | UART, <10 uA | 3 | |||
| Standby current (USB) | 325 | uA | USB, <325 uA | 3 | |||
| Operating current (no touch) | 17 | mA | no touch | 3 | |||
| Operating current (touch) | 25 | mA | touch | 3 | |||
| Lead-to-lead resistance (touch sensor) | 50 | 2000 | Ohm | 3 | |||
| Layer-to-layer capacitance (touch sensor) | 0 | 0.5 | uF | 3 | |||
| Touch coordinate report rate | 150 | reports per second | typ.; results vary slightly with sensor | 3 |
CAD (KiCad official)
- Symbol:
AR1100-I - Footprint:
Package_SO:SSOP-20_5.3x7.2mm_P0.65mm - 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files:
ar1100-i-etched.step/ar1100-i-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ar1100-i.step/ar1100-i.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (58 pp, sha256
f314bf0e177b68ac, retrieved 2026-10-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(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).