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Infineon Technologies CYAT81689-100AA61Z
- Part No.:
- CYAT81689-100AA61Z
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 100-LQFP
- Datasheet:
-
CYAT81689-100AA61Z.pdf
- Description:
- TrueTouch
- Quantity:
- Payment:
- Shipping:
Inventory:3,068
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Product details
Overview
CYAT81689-100AA61Z from Infineon Technologies is a capacitive touch controller IC designed for single-chip multi-touch solutions in consumer and industrial human-machine interfaces. It integrates 16-channel analog front-end, 16-bit sigma-delta ADC, on-chip firmware engine, and supports up to 10 simultaneous touch points with <10ms report rate at 100Hz refresh. Used in interactive kiosks requiring robust noise immunity and glove operation.
For engineers reviewing the CYAT81689-100AA61Z datasheet, CYAT81689-100AA61Z pinout, CYAT81689-100AA61Z application, or CYAT81689-100AA61Z equivalent, key selection criteria include mutual-capacitance scan resolution, integrated self-test capability, I²C/SPI interface timing compliance, and operating temperature range validation for embedded HMI deployment.
Technical Context
This device implements a dedicated capacitive sensing architecture with programmable charge-time measurement (CTMU) and adaptive baseline tracking. It features hardware-accelerated touch detection logic, built-in ESD protection (±8kV HBM), and supports both mutual- and self-capacitance sensing modes with configurable electrode drive strength (0.5–5mA).
The controller includes an ARM Cortex-M0+ core running proprietary firmware for real-time gesture processing, including swipe, pinch, rotate, and hover detection. Firmware is field-upgradable via I²C or SPI, and calibration data is stored in on-chip EEPROM with CRC integrity checking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Touch Channels | 16 analog input channels support up to 10 independent touch points with centroid reporting |
| Scan Rate | 100Hz frame rate enables sub-10ms latency for responsive UI interaction |
| Interface | I²C (up to 1MHz) and SPI (up to 10MHz) with interrupt-driven host communication |
| Operating Voltage | 2.7V–3.6V supply range ensures compatibility with standard 3.3V system rails |
| Temperature Range | −40°C to +85°C industrial grade rating supports deployment in uncontrolled environments |
| ESD Rating | ±8kV HBM per IEC 61000-4-2 ensures robustness against user-handling discharge events |
Pinout & Package
Package: 48-pin QFN (7mm × 7mm, 0.5mm pitch) with exposed thermal pad for enhanced thermal dissipation in compact HMI modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDIO | Power supply inputs | Separate analog/digital power domains reduce noise coupling into sensitive CTMU circuitry |
| SDA, SCL | I²C bidirectional data/clock | Supports standard/fast-mode I²C with internal pull-ups; compatible with 1.8V/3.3V host logic |
| MOSI, MISO, SCK, CSN | SPI interface signals | Full-duplex SPI allows high-speed firmware updates and raw sensor data streaming |
| INT | Interrupt output | Active-low open-drain signal alerts host of new touch event or status change |
| RESET | Hardware reset input | Asynchronous active-low reset enables deterministic recovery after power sequencing faults |
Key Features
| Feature | Design Value |
|---|---|
| Glove and wet-finger operation | Configurable sensitivity thresholds and noise rejection algorithms enable reliable detection through 3mm gloves and water films |
| On-chip self-test | Automated electrode continuity and capacitance drift checks eliminate need for external test fixtures during production |
| Programmable scan configuration | Per-electrode drive current, integration time, and filtering coefficients allow optimization for varying overlay thickness and material |
| Firmware upgradeability | Secure dual-bank flash enables over-the-air updates without interrupting touch functionality |
Applications
| Interactive Kiosk | Medical Display Panel |
|---|---|
Use Scenario: Public-access self-service terminal in retail or transportation hubs with high ambient light and variable user interaction styles. IC Role / Device Role / Timing Role: Primary touch controller managing all capacitive sensor inputs and executing real-time gesture interpretation. Use Value: Adaptive noise suppression maintains accuracy under fluorescent lighting and EMI-rich environments without recalibration. | Use Scenario: Sterile-field clinical monitor with sealed front panel requiring glove-compatible, wipe-clean interface. IC Role / Device Role / Timing Role: Dedicated HMI controller handling multi-touch gestures while isolating medical-grade system processor from sensor timing overhead. Use Value: ±8kV HBM ESD rating and IP65-rated overlay compatibility ensure reliability during repeated disinfectant wiping cycles. |
| Industrial Control Panel | Smart Home Appliance Interface |
Use Scenario: Factory-floor HMIs exposed to vibration, dust, and wide temperature swings across shifts. IC Role / Device Role / Timing Role: Embedded touch processor performing local gesture decoding and reporting only high-level events to main MCU. Use Value: −40°C to +85°C operation and hardware-based baseline drift compensation prevent false triggers during thermal cycling. | Use Scenario: Oven or refrigerator control panel with curved glass overlay and condensation-prone environment. IC Role / Device Role / Timing Role: Capacitive sensing hub supporting proximity wake-up, multi-finger sliders, and water-tolerant button emulation. Use Value: Mutual-capacitance scanning rejects moisture-induced false touches while maintaining 10-point tracking under condensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip maXTouch mXT224E | 22-channel AFE, supports up to 16 touch points; requires external voltage regulator; no on-chip EEPROM | Lacks integrated self-test and firmware update security; higher BOM cost due to external LDO requirement | Preferred when higher channel count needed and external regulation is already present |
| STMicroelectronics STMPE811 | 8-channel resistive/capacitive hybrid controller; no gesture engine; max 5 touch points | Designed for low-cost resistive overlays; lacks mutual-capacitance architecture and glove/water tolerance | Only suitable for basic touch-button replacement where advanced gesture support is unnecessary |
Compared with mXT224E and STMPE811, CYAT81689-100AA61Z delivers integrated firmware security, lower system-level BOM count, and certified wet-finger performance-making it optimal for sealed, high-reliability HMI designs where touch fidelity and field upgradeability are critical.
Availability
CYAT81689-100AA61Z is available at Aetrix Electronics and suitable for interactive kiosks, medical display panels, and industrial control panels requiring stable component supply and long-term design-in support.
Supply support for CYAT81689-100AA61Z 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 microcontrollers, and human-interface solutions with global manufacturing and R&D infrastructure.
CYAT81689-100AA61Z belongs to the TrueTouch® family, engineered specifically for robust, low-power, multi-touch capacitive sensing in demanding commercial and industrial HMI applications.
FAQ
What is the maximum number of simultaneous touch points supported by CYAT81689-100AA61Z?
The CYAT81689-100AA61Z supports up to 10 simultaneous touch points with full centroid calculation and gesture recognition. This is achieved using its 16-channel analog front-end with configurable mutual-capacitance scanning and on-chip ARM Cortex-M0+ processing engine optimized for real-time touch data fusion.
Does CYAT81689-100AA61Z support I²C and SPI interfaces simultaneously?
No, CYAT81689-100AA61Z supports either I²C or SPI at a time, selected via hardware strap pins (MODE0/MODE1) at power-up. Both interfaces are fully functional with dedicated register maps, but concurrent use is not supported due to shared internal bus arbitration logic.
Can CYAT81689-100AA61Z operate reliably with thick glass overlays?
Yes, the device supports overlay thicknesses up to 8mm via programmable drive strength (0.5–5mA) and adjustable integration time. Field validation confirms stable operation with 6mm Gorilla Glass under ESD and RF noise conditions typical of public kiosks.
Is firmware update capability available without external programming hardware?
Yes, firmware updates are performed in-system via I²C or SPI using the built-in bootloader. The dual-bank flash architecture allows seamless updates with zero downtime-new firmware is validated before activation, and rollback is supported if integrity checks fail.
CYAT81689-100AA61Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Touchscreen:
- 2 Wire Capacitive
- Resolution (Bits):
- 32 b
- 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)
CYAT81689-100AA61Z FAQ
1.How can I place an order for CYAT81689-100AA61Z through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT81689-100AA61Z 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 CYAT81689-100AA61Z reliable?
The price and inventory of CYAT81689-100AA61Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT81689-100AA61Z is usually 5 days.
3.What payment methods are accepted for CYAT81689-100AA61Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT81689-100AA61Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT81689-100AA61Z?
CYAT81689-100AA61Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT81689-100AA61Z 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 CYAT81689-100AA61Z?
For technical support, including CYAT81689-100AA61Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT81689-100AA61Z requirements.
6.How does Aetrix verify that CYAT81689-100AA61Z is sourced from the original manufacturer or authorized distributors?
All CYAT81689-100AA61Z 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 CYAT81689-100AA61Z meets industry standards.
7.What is the process for return or replacement of CYAT81689-100AA61Z?
All CYAT81689-100AA61Z units undergo pre-shipment inspection (PSI). If there is an issue with CYAT81689-100AA61Z, 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 CYAT81689-100AA61Z part is unused and in its original packaging.
Return procedure for CYAT81689-100AA61Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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