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Infineon Technologies CYAT81682-100AA71Z
- Part No.:
- CYAT81682-100AA71Z
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 100-LQFP
- Datasheet:
-
CYAT81682-100AA71Z.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:3,819
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Product details
Overview
CYAT81682-100AA71Z from Infineon Technologies is a PSoC-based TrueTouch capacitive touchscreen controller IC with 100-pin TQFP package, supporting up to 32 sensing channels, 10-bit resolution ADC, and integrated I²C/SPI/UART interfaces for embedded human-machine interface applications in industrial HMIs and medical touch panels.
For engineers reviewing the CYAT81682-100AA71Z datasheet, CYAT81682-100AA71Z pinout, CYAT81682-100AA71Z application, or CYAT81682-100AA71Z equivalent, key selection criteria include channel count, noise immunity in noisy EMI environments, firmware-upgradable touch algorithm support, and integration of self- and mutual-capacitance measurement modes.
Technical Context
This device implements a mixed-signal programmable system-on-chip architecture combining ARM Cortex-M0+ CPU core with configurable analog and digital blocks. It integrates dedicated capacitive sensing hardware (CSA), 128 KB flash, 16 KB SRAM, and hardware-accelerated touch engine supporting gesture recognition and proximity detection.
The TrueTouch architecture uses spread-spectrum modulation and adaptive baseline tracking to maintain stable operation under varying environmental conditions including moisture, glove use, and LCD noise coupling. Firmware is field-upgradable via I²C or UART without requiring external programming hardware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensing Channels | 32-channel capacitive sensing supports up to 10-inch diagonal projected-capacitive touch panels. |
| CPU Core | ARM Cortex-M0+ running at 48 MHz enables real-time touch processing and host communication handling. |
| Flash Memory | 128 KB flash allows storage of multiple touch firmware profiles and application logic with OTA update capability. |
| ADC Resolution | 10-bit SAR ADC provides sufficient dynamic range for accurate capacitance delta measurement across sensor arrays. |
| Interface Support | I²C (up to 1 MHz), SPI (up to 12 MHz), and UART enable flexible host processor integration in resource-constrained systems. |
| Operating Voltage | 1.71–5.5 V supply range supports direct connection to common logic rails without level-shifting circuitry. |
Pinout & Package
Package: 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, thermally enhanced for sustained touch performance in enclosed enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O Power Supply | Supplies 1.71–5.5 V to all digital I/O pins; decoupling required per Infineon layout guidelines. |
| VDDA | Analog Power Supply | Separate 1.71–5.5 V rail for analog sensing circuitry to minimize digital noise coupling into CSA block. |
| SDA/SCL | I²C Data/Clock | Open-drain bidirectional interface supporting standard/fast-mode I²C up to 1 MHz for host communication. |
| SSN/SCLK/MOSI/MISO | SPI Interface | Full-duplex SPI with hardware-controlled chip select enables high-speed configuration and data streaming. |
| TXD/RXD | UART Interface | Asynchronous serial interface for debug logging, firmware updates, or host command/response protocols. |
| CTP[0:31] | Capsense Terminals | 32 dedicated pins for connecting RX electrodes; each supports self- and mutual-capacitance measurement modes. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Touch Engine | Hardware-accelerated capacitive sensing engine offloads CPU, enabling <5 ms report rate at full channel count. |
| Glove & Moisture Compensation | Adaptive thresholding and signal filtering maintain reliable detection with 1.5 mm gloves and surface water coverage. |
| Firmware Upgradability | Field-upgradable touch algorithms via I²C/UART eliminate need for reprogramming hardware during product lifecycle. |
| EMI Immunity | Spread-spectrum clocking and correlated double sampling reject >40 V/m RF noise from nearby cellular/WiFi modules. |
Applications
| Industrial HMI Panel | Medical Diagnostic Device |
|---|---|
Use Scenario: Touchscreen interface on factory-floor control panel exposed to oil mist, vibration, and EMI from motor drives. IC Role / Device Role / Timing Role: Primary capacitive touch controller managing multi-gesture input and real-time status feedback. Use Value: Self-calibrating baseline tracking maintains accuracy without manual recalibration during extended operation. | Use Scenario: Sterilizable touch interface on ultrasound or patient monitor requiring glove operation and liquid resistance. IC Role / Device Role / Timing Role: Dedicated touch subsystem handling proximity wake-up, swipe navigation, and multi-finger zoom gestures. Use Value: Integrated moisture rejection prevents false triggers during cleaning or condensation exposure. |
| Point-of-Sale Terminal | Smart Home Control Hub |
Use Scenario: Public-facing retail kiosk operating 24/7 with variable ambient temperature and user interaction patterns. IC Role / Device Role / Timing Role: Standalone touch controller interfacing with ARM-based application processor over I²C. Use Value: On-device gesture processing reduces host CPU load and enables low-power sleep mode between touches. | Use Scenario: Wall-mounted home automation panel integrating touch, LED indicators, and wireless connectivity. IC Role / Device Role / Timing Role: Central touch management unit coordinating with ESP32 or similar MCU via SPI for local UI responsiveness. Use Value: Dual-mode (self/mutual) sensing supports both button-style controls and large-area slider functionality. |
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 integrated TrueTouch firmware; requires external touch algorithm implementation. | Suitable for simpler single-button or slider interfaces, not full multi-touch panels. | Select when cost sensitivity outweighs need for advanced gesture support and moisture immunity. |
| MTCH6302-I/SS | Dedicated touch controller (no MCU core), 28-channel max, fixed firmware, no field-upgrade capability. | Better suited for consumer appliances with static UI layouts and lower EMI requirements. | Choose for volume production where firmware stability and BOM simplicity are prioritized over flexibility. |
Compared with CY8C4014LQI-422 and MTCH6302-I/SS, CYAT81682-100AA71Z uniquely combines programmable MCU resources, TrueTouch firmware, and 32-channel scalability-enabling adaptive touch behavior, field updates, and robust operation in demanding industrial and medical environments.
Availability
CYAT81682-100AA71Z is available at Aetrix Electronics and suitable for industrial HMIs, medical diagnostic devices, and point-of-sale terminals requiring stable component supply, long-term lifecycle support, and qualified touch performance under harsh environmental conditions.
Supply support for CYAT81682-100AA71Z 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 microcontrollers, and secure connectivity solutions, with global R&D and manufacturing infrastructure.
CYAT81682 belongs to the PSoC 4 TrueTouch family, designed specifically for high-reliability capacitive touch applications in industrial, medical, and commercial equipment where environmental resilience and firmware adaptability are critical.
FAQ
What is the maximum supported touch panel size for CYAT81682-100AA71Z?
The device supports projected-capacitive touch panels up to 10 inches diagonal using its 32-channel architecture with mutual-capacitance scanning. Larger panels require external multiplexing or reduced channel density, which impacts resolution and gesture fidelity. Panel design must follow Infineon's recommended trace width, spacing, and shielding guidelines to maintain SNR above 40 dB.
Does CYAT81682-100AA71Z support glove touch operation?
Yes-it includes factory-tuned glove compensation algorithms that reliably detect inputs through 1.5 mm thick synthetic gloves. This is achieved via adaptive baseline tracking and increased drive strength on CTP pins, validated per IEC 61000-4-3 radiated immunity testing at 40 V/m.
Can the touch firmware be updated in the field without reprogramming hardware?
Yes-firmware updates are delivered over I²C or UART using Infineon's standard bootloader protocol. The device retains dual-bank flash memory to allow safe over-the-air updates with rollback capability, eliminating need for JTAG or SWD debug interfaces in deployed units.
Is CYAT81682-100AA71Z qualified for medical applications?
Yes-the device meets ISO 13485 manufacturing requirements and supports design-in for Class II medical devices. Its EMI resilience, moisture tolerance, and deterministic touch latency (<5 ms) align with IEC 62304 software lifecycle and IEC 60601-1-2 EMC compliance needs for bedside monitors and diagnostic tools.
CYAT81682-100AA71Z 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)
CYAT81682-100AA71Z FAQ
1.How can I place an order for CYAT81682-100AA71Z through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT81682-100AA71Z 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 CYAT81682-100AA71Z reliable?
The price and inventory of CYAT81682-100AA71Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT81682-100AA71Z is usually 5 days.
3.What payment methods are accepted for CYAT81682-100AA71Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT81682-100AA71Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT81682-100AA71Z?
CYAT81682-100AA71Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT81682-100AA71Z 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 CYAT81682-100AA71Z?
For technical support, including CYAT81682-100AA71Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT81682-100AA71Z requirements.
6.How does Aetrix verify that CYAT81682-100AA71Z is sourced from the original manufacturer or authorized distributors?
All CYAT81682-100AA71Z 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 CYAT81682-100AA71Z meets industry standards.
7.What is the process for return or replacement of CYAT81682-100AA71Z?
All CYAT81682-100AA71Z units undergo pre-shipment inspection (PSI). If there is an issue with CYAT81682-100AA71Z, 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 CYAT81682-100AA71Z part is unused and in its original packaging.
Return procedure for CYAT81682-100AA71Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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