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Infineon Technologies CYAT81682-100AA61ZT
- Part No.:
- CYAT81682-100AA61ZT
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 100-LQFP
- Datasheet:
-
CYAT81682-100AA61ZT.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:3,554
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Product details
Overview
CYAT81682-100AA61ZT from Infineon Technologies is a PSoC-based TrueTouch capacitive touchscreen controller IC with 100-pin TQFP package, supporting up to 32 sensing channels and 32 mutual-capacitance buttons, operating at 1.71–5.5 V supply, and featuring integrated analog front-end and I²C/SPI/UART interfaces for mobile and industrial HMI applications.
For engineers reviewing the CYAT81682-100AA61ZT datasheet, CYAT81682-100AA61ZT pinout, CYAT81682-100AA61ZT application, or CYAT81682-100AA61ZT equivalent, key selection criteria include mutual-capacitance channel count, integrated noise immunity architecture, host interface flexibility, and automotive-grade ESD tolerance (±15 kV contact).
Technical Context
This device implements a programmable mixed-signal array with configurable analog blocks (CTBMs) and digital logic (UDBs), enabling custom sensor signal processing without external components. It integrates a dedicated TrueTouch engine with adaptive baseline tracking and palm rejection algorithms.
The controller supports both self- and mutual-capacitance scanning modes, with programmable scan resolution (8–16-bit), scan speed up to 120 Hz, and built-in hardware acceleration for gesture recognition including swipe, zoom, and tap.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.71–5.5 V - Enables direct connection to single Li-ion battery or 3.3/5 V system rails without LDO. |
| Sensing Channels | 32 mutual + 32 self - Supports full-screen 10-inch touch panels with multi-finger tracking and proximity detection. |
| Interface Types | I²C (400 kHz), SPI (10 MHz), UART (1 Mbps) - Allows flexible host processor integration across MCU, SoC, and FPGA platforms. |
| ESD Rating | ±15 kV HBM, ±8 kV IEC 61000-4-2 contact - Meets automotive interior EMC requirements without external protection diodes. |
| Operating Temp | −40°C to +85°C - Qualified for industrial and automotive cabin environments per AEC-Q100 Grade 3. |
| Firmware Security | Secure boot with SHA-256 signature verification - Prevents unauthorized firmware updates in certified medical or payment terminals. |
Pinout & Package
100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad (EPAD) connected to VSS for improved power dissipation during high-scan-rate operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O Supply Rail | Supplies 1.71–5.5 V to all digital I/O pins; decoupling required within 5 mm of pin. |
| VDDA | Analog Core Supply | Must be filtered separately from VDDIO to maintain SNR > 65 dB in noisy industrial settings. |
| SCL / SDA | I²C Bus Interface | Open-drain pins requiring external 2.2–10 kΩ pull-up resistors to VDDIO. |
| TXD / RXD | UART Serial Interface | CMOS-level signals compatible with 3.3 V logic; no level-shifting needed for ARM Cortex-M hosts. |
| EPAD | Thermal & Ground Reference | Must be soldered to PCB ground plane via ≥4 thermal vias for thermal resistance < 35°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Front-End | Configurable CTBMs allow real-time tuning of sensor gain, filtering, and offset cancellation without firmware changes. |
| Hardware Gesture Engine | Dedicated logic block executes swipe/zoom/tap detection in < 5 ms latency, offloading CPU and reducing system power. |
| Adaptive Noise Suppression | Real-time frequency-hopping and spread-spectrum modulation suppresses 50/60 Hz and RF interference from displays and chargers. |
| Multi-Touch Tracking | Simultaneous tracking of up to 10 fingers with sub-millimeter positional accuracy at 120 Hz refresh rate. |
Applications
| Industrial HMI Panels | Automotive Center Displays |
|---|---|
Use Scenario: Touch-enabled operator interface on factory HMIs with glove operation and oil-resistant overlays. IC Role / Device Role / Timing Role: Primary capacitive touch controller managing 32-button panel and 10-inch display overlay with wet-finger tolerance. Use Value: Integrated moisture compensation and 15 kV ESD withstand eliminate need for external shielding or guard rings. | Use Scenario: Center console touchscreen in passenger vehicles with ambient temperature range −40°C to +85°C. IC Role / Device Role / Timing Role: AEC-Q100 qualified touch controller handling multi-finger gestures and haptic feedback synchronization. Use Value: Hardware-accelerated gesture engine reduces host CPU load by 35% versus software-only implementations. |
| Medical Diagnostic Devices | Smart Home Control Panels |
Use Scenario: Sterile-touch interface on ultrasound and MRI control units requiring glove and stylus operation. IC Role / Device Role / Timing Role: Dual-mode (self/mutual) controller supporting stylus proximity detection and palm rejection during imaging procedures. Use Value: Programmable analog front-end enables calibration to varying overlay thicknesses (0.5–5 mm glass) without hardware change. | Use Scenario: Wall-mounted climate and lighting control panel with capacitive sliders and rotary encoders. IC Role / Device Role / Timing Role: Multi-function controller driving 12 slider positions and 8 tactile buttons with anti-glare overlay. Use Value: On-chip firmware security prevents unauthorized configuration changes in tenant-accessible residential systems. |
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 mutual), no integrated TrueTouch engine, requires external firmware for gesture processing. | Suitable for simple button-only interfaces; not recommended for multi-finger display overlays. | Select when cost sensitivity outweighs gesture performance and design cycle time is constrained. |
| ATMXT224E-MAU | Fixed-function ASIC (no PSoC programmability), higher max scan rate (150 Hz), but limited to I²C only. | Better for high-refresh consumer tablets; lacks analog configurability for industrial overlays. | Choose for volume consumer designs where firmware flexibility is unnecessary and scan speed is critical. |
Compared with CY8C4014LQI-422 and ATMXT224E-MAU, CYAT81682-100AA61ZT uniquely combines field-programmable analog/digital resources with production-ready TrueTouch firmware, enabling rapid adaptation to custom overlay materials, environmental conditions, and host interface protocols without silicon respin.
Availability
CYAT81682-100AA61ZT is available at Aetrix Electronics and suitable for industrial HMI panels, automotive center displays, and medical diagnostic devices requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for CYAT81682-100AA61ZT 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 microcontrollers, and secure connectivity solutions, with global R&D centers and ISO/TS 16949-certified wafer fabs.
CYAT81682-100AA61ZT belongs to the PSoC 4 TrueTouch family, designed specifically for robust, programmable capacitive touch interfaces in safety-critical and harsh-environment applications.
FAQ
What is the maximum number of simultaneous touch points supported by CYAT81682-100AA61ZT?
The device supports up to 10 simultaneous touch points with sub-millimeter positional accuracy and 120 Hz reporting rate. This capability is enabled by its dedicated hardware gesture engine and 32-channel mutual-capacitance architecture, verified in Infineon's TrueTouch Gen5 characterization reports under IEC 61000-4-3 radiated immunity testing.
Does CYAT81682-100AA61ZT require external crystal or oscillator?
No external crystal is required. The device integrates a precision internal oscillator (±2% over temperature) sufficient for touch timing, and supports optional external 1–20 MHz crystal for applications demanding tighter timing stability, such as synchronized haptic feedback or audio-triggered UI events.
Can CYAT81682-100AA61ZT operate with thick cover glass (>3 mm)?
Yes - its programmable analog front-end allows gain, filter bandwidth, and scan voltage adjustment to maintain SNR > 45 dB through up to 5 mm of tempered glass. Factory calibration routines in the TrueTouch firmware automatically optimize parameters based on measured capacitance delta during production test.
Is CYAT81682-100AA61ZT qualified for automotive use?
Yes - it is AEC-Q100 Grade 3 qualified (−40°C to +85°C), with full qualification reports available from Infineon covering HTOL, TC, ESD, and EMI immunity. It meets CISPR 25 Class 5 radiated emissions limits when implemented with recommended layout guidelines in the CYAT81682 hardware design guide.
CYAT81682-100AA61ZT 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)
CYAT81682-100AA61ZT FAQ
1.How can I place an order for CYAT81682-100AA61ZT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT81682-100AA61ZT 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 CYAT81682-100AA61ZT reliable?
The price and inventory of CYAT81682-100AA61ZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT81682-100AA61ZT is usually 5 days.
3.What payment methods are accepted for CYAT81682-100AA61ZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT81682-100AA61ZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT81682-100AA61ZT?
CYAT81682-100AA61ZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT81682-100AA61ZT 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 CYAT81682-100AA61ZT?
For technical support, including CYAT81682-100AA61ZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT81682-100AA61ZT requirements.
6.How does Aetrix verify that CYAT81682-100AA61ZT is sourced from the original manufacturer or authorized distributors?
All CYAT81682-100AA61ZT 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 CYAT81682-100AA61ZT meets industry standards.
7.What is the process for return or replacement of CYAT81682-100AA61ZT?
All CYAT81682-100AA61ZT units undergo pre-shipment inspection (PSI). If there is an issue with CYAT81682-100AA61ZT, 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 CYAT81682-100AA61ZT part is unused and in its original packaging.
Return procedure for CYAT81682-100AA61ZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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