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Infineon Technologies CYAT81688-100AA61ZT
- Part No.:
- CYAT81688-100AA61ZT
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 100-LQFP
- Datasheet:
-
CYAT81688-100AA61ZT.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:3,924
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Product details
Overview
CYAT81688-100AA61ZT from Infineon Technologies is a PSoC-based TrueTouch capacitive touchscreen controller IC with integrated analog front-end, 100-segment mutual-capacitance sensing, and I²C/SPI interface. It supports up to 10 simultaneous touches, operates from 2.7–5.5 V, and delivers <15 µA deep-sleep current for battery-powered human-interface applications in industrial HMIs and medical touch panels.
For engineers reviewing the CYAT81688-100AA61ZT datasheet, CYAT81688-100AA61ZT pinout, CYAT81688-100AA61ZT application, or CYAT81688-100AA61ZT equivalent, key selection criteria include mutual-capacitance channel count, integrated firmware engine, ESD tolerance (±15 kV air), operating voltage range, and host interface flexibility for embedded touch system integration.
Technical Context
This device implements a programmable mixed-signal array with configurable analog blocks (CTBMs) and digital logic (UDBs), enabling custom sensor signal conditioning and real-time gesture processing without external microcontroller intervention. Its TrueTouch architecture includes on-chip noise suppression for operation in noisy industrial environments and supports both self- and mutual-capacitance measurement modes.
The IC integrates a 32-bit ARM Cortex-M0+ CPU core running proprietary touch firmware, dedicated hardware accelerators for centroid calculation and palm rejection, and configurable GPIOs for LED feedback or button emulation. Firmware updates are supported via I²C or SPI without requiring chip reprogramming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Touch Channels | 100 mutual-capacitance segments - enables high-resolution 7"–10" touch panels with fine-grained finger tracking |
| Max Simultaneous Touches | 10 - supports multi-user interaction and complex gesture recognition in HMI systems |
| Supply Voltage Range | 2.7–5.5 V - compatible with single-cell Li-ion, USB-powered, and industrial 3.3/5 V rails |
| Deep-Sleep Current | <15 µA - extends battery life in portable medical devices and handheld terminals |
| ESD Robustness | ±15 kV air, ±8 kV contact - meets IEC 61000-4-2 Level 4 for front-panel reliability |
| Host Interface | I²C (up to 1 MHz) and SPI (up to 12 MHz) - allows flexible integration with low- or high-speed host processors |
Pinout & Package
Package: 64-pin QFN (9 mm × 9 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O supply input | Supplies 1.71–5.5 V to GPIOs and interface logic; independent of core VDD |
| VDD | Core supply input | Provides regulated 1.2 V internally; accepts 2.7–5.5 V externally |
| SCL / SDA | I²C bidirectional bus | Open-drain pins with internal pull-ups; support standard/fast-mode I²C |
| MOSI / MISO / SCLK / SS | SPI interface signals | Full-duplex SPI master/slave operation; SS active-low chip select |
| INT | Interrupt output | Active-low open-drain signal indicating touch event or firmware status change |
| RESET | Hardware reset input | Asynchronous active-low reset; initiates cold boot and firmware reload |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Front-End | Configurable CTBMs allow tuning of sensor drive strength, integration time, and noise filtering per segment |
| On-Chip Gesture Engine | Dedicated hardware computes swipe, pinch, rotate, and tap gestures without host CPU load |
| Auto-Tuning Calibration | Real-time baseline and sensitivity adjustment compensates for temperature drift and moisture effects |
| Water & Glove Tolerance | Supports operation with 5 mm water layer and 3 mm thick gloves via adaptive thresholding |
Applications
| Industrial HMI Panel | Medical Diagnostic Terminal |
|---|---|
Use Scenario: Operator interface on factory-floor PLC control panels exposed to EMI and conductive contaminants. IC Role / Device Role / Timing Role: Capacitive touch controller with integrated noise immunity and self-calibration for reliable finger detection. Use Value: Eliminates need for external EMI filters and recalibration routines, reducing BOM count and field service calls. | Use Scenario: Touchscreen on portable ultrasound or patient monitor used with latex gloves and disinfectant wipes. IC Role / Device Role / Timing Role: TrueTouch controller with glove/water compensation and low-power deep-sleep mode. Use Value: Maintains responsiveness under clinical conditions while extending battery runtime beyond 12 hours. |
| Smart Building Control Wallplate | Public Kiosk Interface |
Use Scenario: Wall-mounted HVAC/lighting controller installed in commercial buildings with variable ambient temperature. IC Role / Device Role / Timing Role: Self-tuning capacitive controller managing 12-button + slider layout with haptic feedback timing. Use Value: Compensates for thermal expansion-induced capacitance drift, ensuring consistent touch accuracy across -10°C to +60°C. | Use Scenario: Outdoor ticketing or information kiosk subject to condensation, dust, and vandalism attempts. IC Role / Device Role / Timing Role: Ruggedized touch controller with ±15 kV ESD protection and water rejection algorithm. Use Value: Prevents false triggers from moisture and maintains uptime in unattended public infrastructure. |
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 host for gesture processing | Suitable only for simple button/slider interfaces, not multi-touch panels | Select when cost-sensitive design uses host MCU for all touch logic and panel size ≤ 4" |
| MTCH6302-I/SS | 16-channel max, no ARM core, fixed-function ASIC architecture, lower ESD rating (±8 kV) | Limited to small consumer appliances; lacks auto-tuning and glove/water handling | Choose for high-volume white goods where firmware flexibility and environmental robustness are secondary |
Compared with CY8C4014LQI-422 and MTCH6302-I/SS, CYAT81688-100AA61ZT uniquely combines high-channel count, on-device gesture intelligence, and industrial-grade environmental resilience-enabling standalone touch subsystems without host dependency or external calibration.
Availability
CYAT81688-100AA61ZT is available at Aetrix Electronics and suitable for industrial HMIs, medical diagnostic terminals, smart building wallplates, and public kiosks requiring stable component supply and long-term lifecycle support.
Supply support for CYAT81688-100AA61ZT 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 and manufacturing infrastructure.
This part belongs to the PSoC 4 TrueTouch family, designed specifically for robust, self-contained capacitive touch systems in harsh environments where reliability, low power, and firmware independence are critical.
FAQ
What host processor interfaces does CYAT81688-100AA61ZT support?
CYAT81688-100AA61ZT supports both I²C (up to 1 MHz) and SPI (up to 12 MHz) host interfaces with configurable timing parameters. It operates as a slave device on both buses and includes automatic protocol arbitration to prevent bus conflicts during simultaneous access.
Does this device require external firmware loading during operation?
No. The device ships with factory-programmed TrueTouch firmware stored in on-chip flash memory. Field firmware updates are possible via I²C or SPI using Infineon's CAPSENSE™ Tuner tool, but no external loader or bootloader circuitry is required for normal operation.
Can CYAT81688-100AA61ZT drive projected-capacitive sensors with 100+ electrodes?
Yes. Its 100-segment mutual-capacitance architecture directly supports projected-capacitive sensor matrices up to 10×10 electrode grids. Sensor routing must follow Infineon's recommended trace width, spacing, and shielding guidelines to maintain SNR above 60 dB.
What is the maximum operating temperature for continuous touch sensing?
The device is rated for continuous operation from –40°C to +85°C ambient. Internal thermal monitoring disables touch scanning above +105°C junction temperature, and automatic recalibration maintains accuracy across the full industrial temperature range.
CYAT81688-100AA61ZT 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)
CYAT81688-100AA61ZT FAQ
1.How can I place an order for CYAT81688-100AA61ZT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT81688-100AA61ZT 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 CYAT81688-100AA61ZT reliable?
The price and inventory of CYAT81688-100AA61ZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT81688-100AA61ZT is usually 5 days.
3.What payment methods are accepted for CYAT81688-100AA61ZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT81688-100AA61ZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT81688-100AA61ZT?
CYAT81688-100AA61ZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT81688-100AA61ZT 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 CYAT81688-100AA61ZT?
For technical support, including CYAT81688-100AA61ZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT81688-100AA61ZT requirements.
6.How does Aetrix verify that CYAT81688-100AA61ZT is sourced from the original manufacturer or authorized distributors?
All CYAT81688-100AA61ZT 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 CYAT81688-100AA61ZT meets industry standards.
7.What is the process for return or replacement of CYAT81688-100AA61ZT?
All CYAT81688-100AA61ZT units undergo pre-shipment inspection (PSI). If there is an issue with CYAT81688-100AA61ZT, 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 CYAT81688-100AA61ZT part is unused and in its original packaging.
Return procedure for CYAT81688-100AA61ZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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