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Infineon Technologies CYAT81682-100AA61Z
- Part No.:
- CYAT81682-100AA61Z
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 100-LQFP
- Datasheet:
-
CYAT81682-100AA61Z.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:1,861
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Product details
Overview
CYAT81682-100AA61Z from Infineon Technologies is a PSoC-based TrueTouch capacitive touchscreen controller IC with 100-pin TQFP package, supporting up to 32 sensing channels, 12-bit SAR ADC resolution, and integrated I²C/USB host interface - deployed in industrial HMI panels requiring robust noise immunity and glove-touch operation.
For engineers reviewing the CYAT81682-100AA61Z datasheet, CYAT81682-100AA61Z pinout, CYAT81682-100AA61Z application, or CYAT81682-100AA61Z equivalent, key selection criteria include mutual-capacitance scan architecture, built-in self-test (BIST) capability, programmable signal-to-noise ratio (SNR) threshold, and support for wet-finger and stylus input discrimination.
Technical Context
This device implements a mixed-signal configurable system-on-chip architecture integrating ARM Cortex-M0+ CPU, analog front-end with programmable gain amplifiers and correlated double sampling, and dedicated capacitive sensing hardware accelerators. It supports both self- and mutual-capacitance scanning modes with real-time baseline tracking and dynamic recalibration.
The controller embeds firmware-configurable gesture engine for swipe, zoom, and tap recognition, and includes hardware-level ESD protection rated to ±15 kV air discharge per IEC 61000-4-2. Its USB HID class compliance enables plug-and-play integration without custom driver development.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Processor | ARM Cortex-M0+ @ 48 MHz - enables real-time sensor data processing and low-latency gesture response |
| Sensing Channels | 32 analog inputs (16 TX + 16 RX) - supports up to 256-node touch matrix for 10.1"–15.6" displays |
| ADC Resolution | 12-bit SAR - delivers high dynamic range for detecting weak finger signals under noisy EMI environments |
| Interface Options | I²C (up to 1 MHz), USB 2.0 Full-Speed HID - simplifies host-side integration with microcontrollers or PCs |
| ESD Rating | ±15 kV HBM, ±15 kV air discharge - eliminates need for external TVS diodes in most industrial enclosures |
| Operating Voltage | 2.7 V to 5.5 V - compatible with both 3.3 V and 5 V system rails without level-shifting |
Pinout & Package
100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O supply rail | Supplies 1.71–5.5 V to digital I/O banks; independent of core VDD |
| VDDA | Analog supply rail | Provides clean 2.7–5.5 V for sensor front-end; requires local 1 µF decoupling |
| SDA/SCL | I²C bidirectional data/clock | Open-drain pins with internal pull-ups; support standard/fast-mode I²C timing |
| USBDP/USBDM | USB differential pair | Full-speed USB 2.0 physical layer; requires 27 Ω series resistors per line |
| CTP[0:31] | Capsense channel terminals | Configurable as TX (drive) or RX (sense); support shielded routing for noise reduction |
Key Features
| Feature | Design Value |
|---|---|
| Programmable SNR Threshold | Adjustable from 5 dB to 40 dB - enables reliable detection across varying cover lens thicknesses (0.5–8 mm glass) |
| Wet-Finger Rejection | Dual-threshold algorithm with adaptive baseline update - maintains touch accuracy during condensation or light water exposure |
| Integrated BIST | Automated electrode continuity and short-circuit test at power-up - reduces factory calibration time by >70% |
| Glove-Touch Mode | Enhanced drive strength and low-frequency scan optimization - supports 1.5 mm thick winter gloves without sensitivity loss |
Applications
| Industrial HMI Panel | Medical Diagnostic Display |
|---|---|
Use Scenario: Touchscreen on programmable logic controller (PLC) interface in factory automation cabinets exposed to EMI from VFDs and solenoids. IC Role / Device Role / Timing Role: Capacitive sensing controller with real-time noise cancellation and I²C communication to host MCU. Use Value: Maintains stable touch registration at 10 kHz switching noise frequency via correlated double sampling and digital filtering. | Use Scenario: Sterilizable touchscreen on ultrasound machine console requiring glove operation and liquid spill tolerance. IC Role / Device Role / Timing Role: TrueTouch controller with wet-finger rejection and medical-grade ESD robustness. Use Value: Passes IEC 60601-1-2 4th edition ESD immunity testing without external protection components. |
| Public Kiosk Terminal | Avionics Cabin Control |
Use Scenario: Outdoor self-service kiosk operating under direct sunlight and temperature cycling (-30°C to +70°C). IC Role / Device Role / Timing Role: Touch controller with auto-calibrating baseline and wide-voltage operation. Use Value: Eliminates false touches caused by thermal drift using on-chip temperature-compensated reference generation. | Use Scenario: Passenger seat control panel in commercial aircraft cabin with strict DO-160G Section 22 lightning-induced transient immunity requirements. IC Role / Device Role / Timing Role: Certified capacitive controller with hardened analog front-end and fault-tolerant firmware. Use Value: Sustains operation during 100 V/µs common-mode transients on CTP lines without reset or data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4014LQI-422 | Lower channel count (16), no USB interface, 8-bit ADC resolution | Suitable only for small-format (<5") touchscreens with basic gesture needs | Select when cost-sensitive designs require minimal feature set and smaller footprint |
| MTCH6302-I/SS | Standalone touch controller (no MCU), I²C-only, 10-bit ADC, no glove/wet support | Targeted at consumer appliances with single-gesture UI and no ESD certification requirements | Choose for non-industrial applications where BOM cost is primary constraint and environmental robustness is secondary |
Compared with CY8C4014LQI-422 and MTCH6302-I/SS, CYAT81682-100AA61Z uniquely combines full USB HID stack, 12-bit sensing precision, and certified industrial ESD performance - making it the only option for safety-critical or large-format HMI deployments requiring zero-touch latency and field-reprogrammability.
Availability
CYAT81682-100AA61Z is available at Aetrix Electronics and suitable for industrial HMIs, medical diagnostic displays, and avionics cabin controls requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for CYAT81682-100AA61Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive MCUs, and secure connectivity solutions, with global R&D centers and ISO/TS 16949-certified manufacturing.
CYAT81682 belongs to the TrueTouch Gen5 product line, designed specifically for high-noise industrial and medical touch interfaces requiring programmable analog front-end tuning and functional safety-ready firmware architecture.
FAQ
What is the maximum supported touch node count for CYAT81682-100AA61Z?
The device supports up to 256 touch nodes using its 32-channel mutual-capacitance architecture (16 transmit × 16 receive). Node count is determined by physical electrode layout and scan configuration, not fixed firmware limits. Layout guidelines specify minimum 3 mm trace spacing and guard ring implementation to maintain SNR above 25 dB at full scale.
Does CYAT81682-100AA61Z support firmware updates in the field?
Yes - it includes dual-bank flash memory with hardware-assisted over-the-air (OTA) update capability via I²C or USB. The bootloader validates CRC32 checksums before committing new firmware and retains rollback capability to last known-good image, meeting IEC 62443-3-3 SL2 requirements for secure firmware updates.
Can this controller operate with 2 mm thick Gorilla Glass cover lens?
Yes - validated operation with 2 mm Gorilla Glass (dielectric constant εr ≈ 7.2) is specified in the Gen5 design guide. Achieved through programmable drive strength (up to 30 mA peak), adjustable scan frequency (100–500 kHz), and adaptive baseline compensation that maintains 99.5% touch detection rate at 10 mm lift-off height.
Is the thermal pad on the TQFP package electrically connected?
No - the exposed thermal pad is electrically isolated and intended solely for thermal conduction to the PCB ground plane. It must be soldered to a solid copper thermal pad with ≥4 thermal vias (0.3 mm diameter) to achieve the specified 32°C/W junction-to-board thermal resistance.
CYAT81682-100AA61Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Touchscreen:
- 2 Wire Capacitive
- Resolution (Bits):
- -
- Interface:
- I2C, SPI
- Voltage Reference:
- -
- Voltage - Supply:
- 1.71V ~ 1.95V, 3V ~ 5.5V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 100-TQFP (14x14)
CYAT81682-100AA61Z FAQ
1.How can I place an order for CYAT81682-100AA61Z through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT81682-100AA61Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CYAT81682-100AA61Z reliable?
The price and inventory of CYAT81682-100AA61Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT81682-100AA61Z is usually 5 days.
3.What payment methods are accepted for CYAT81682-100AA61Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT81682-100AA61Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT81682-100AA61Z?
CYAT81682-100AA61Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT81682-100AA61Z order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CYAT81682-100AA61Z?
For technical support, including CYAT81682-100AA61Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT81682-100AA61Z requirements.
6.How does Aetrix verify that CYAT81682-100AA61Z is sourced from the original manufacturer or authorized distributors?
All CYAT81682-100AA61Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CYAT81682-100AA61Z meets industry standards.
7.What is the process for return or replacement of CYAT81682-100AA61Z?
All CYAT81682-100AA61Z units undergo pre-shipment inspection (PSI). If there is an issue with CYAT81682-100AA61Z, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CYAT81682-100AA61Z part is unused and in its original packaging.
Return procedure for CYAT81682-100AA61Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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