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Infineon Technologies CYAT81682-100AS61
- Part No.:
- CYAT81682-100AS61
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 100-LQFP
- Datasheet:
-
CYAT81682-100AS61.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:1,271
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Product details
Overview
CYAT81682-100AS61 from Infineon Technologies is a PSoC-based TrueTouch capacitive touchscreen controller IC with 100-channel analog front end, 16-bit sigma-delta ADC, and integrated ARM Cortex-M0+ MCU. It supports up to 10-finger tracking, operates at 1.71–3.6 V supply, and delivers <15 µA deep-sleep current for battery-powered touch interfaces in industrial HMIs.
For engineers reviewing the CYAT81682-100AS61 datasheet, CYAT81682-100AS61 pinout, CYAT81682-100AS61 application, or CYAT81682-100AS61 equivalent, key selection criteria include channel count, finger-tracking resolution, low-power sleep modes, I²C/SPI interface compatibility, and mutual-capacitance scan architecture.
Technical Context
This device integrates a programmable analog signal chain with digital processing resources to perform real-time capacitive sensing, noise rejection, and gesture decoding. Its AFE supports both self- and mutual-capacitance measurement modes, configurable scan resolution (8–16 bit), and adaptive baseline tracking.
The embedded Cortex-M0+ executes firmware for touch algorithm execution, host communication protocol handling (I²C v4.0, SPI), and system-level power management. Firmware is field-upgradable via bootloader over I²C or SPI without external programming hardware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Touch Channels | 100-channel analog front end enables high-resolution projected-capacitive touch panels up to 15-inch diagonal with fine-grained electrode pitch. |
| ADC Resolution | 16-bit sigma-delta ADC provides >90 dB SNR for robust noise immunity in electrically noisy industrial environments. |
| Supply Voltage | 1.71–3.6 V operation allows direct integration with single-cell Li-ion or 3.3 V system rails without LDO overhead. |
| Deep-Sleep Current | <15 µA enables multi-year battery life in portable HMIs with periodic wake-on-touch events. |
| Host Interface | I²C (up to 1 MHz) and SPI (up to 12 MHz) support flexible host processor pairing and deterministic interrupt latency. |
| Firmware Upgrade | In-system bootloader permits field updates without JTAG or external programmer-critical for deployed kiosk or medical device maintenance. |
Pinout & Package
Package: 68-pin QFN (9 mm × 9 mm, 0.4 mm pitch, exposed thermal pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O supply rail | Supplies 1.71–3.6 V to all digital I/Os; must be decoupled locally for noise-sensitive touch acquisition. |
| VDDA | Analog supply rail | Independent 1.71–3.6 V analog domain supply; separation prevents digital switching noise from degrading ADC performance. |
| SCL/SDA | I²C bidirectional bus | Open-drain pins requiring external pull-ups; support standard/fast-mode plus I²C v4.0 features including timeout and arbitration recovery. |
| MOSI/MISO/SCLK/SS | SPI interface signals | Full-duplex SPI with dedicated chip-select; supports mode 0 and mode 3 clock polarity/phase configurations. |
| INT | Interrupt output | Active-low open-drain signal asserted when new touch data is ready or error condition occurs; level-triggered for reliable host polling. |
| RESET | Hardware reset input | Asynchronous active-low reset; internal pull-up ensures defined state on power-up without external circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable AFE gain and integration time | Enables optimization for varying sensor capacitance (5–500 pF) and environmental conditions (temperature/humidity drift compensation). |
| Adaptive noise suppression | Real-time rejection of 50/60 Hz mains interference and burst noise using frequency-hopping and correlation filtering-no host CPU load. |
| On-chip gesture engine | Dedicated hardware accelerates swipe, pinch, rotate, and tap detection with sub-10 ms latency-offloads main MCU and reduces firmware complexity. |
| Configurable wake-on-touch | Allows selective electrode scanning during sleep to detect touch with <15 µA average current, enabling instant resume without full wake cycle. |
Applications
| Industrial HMI Panel | Medical Diagnostic Display |
|---|---|
Use Scenario: Touch-enabled control panel in factory automation cabinet operating under EMI-heavy motor drive environments. IC Role / Device Role / Timing Role: Primary capacitive touch controller managing 48×48 electrode grid, performing real-time noise cancellation and reporting coordinate data via I²C every 12.5 ms. Use Value: Adaptive noise suppression maintains >99.9% touch accuracy despite 4 kV EFT bursts-eliminates need for external shielding or recalibration. | Use Scenario: Sterile, glove-compatible touchscreen on ultrasound machine display requiring high reliability and low standby power. IC Role / Device Role / Timing Role: Dual-role controller handling both touch sensing and proximity wake-up; enters deep-sleep between scans while maintaining <15 µA quiescent draw. Use Value: Field-upgradable firmware enables post-deployment compliance updates (IEC 62304 Class B) without hardware revision or service visit. |
| Public Kiosk Terminal | Smart Building Control Wallplate |
Use Scenario: Outdoor-facing self-service kiosk exposed to temperature cycling (-20°C to +70°C) and condensation. IC Role / Device Role / Timing Role: Touch controller with integrated temperature-compensated baseline tracking and moisture-tolerant scan algorithm. Use Value: Maintains stable touch response across full industrial temp range without recalibration-reduces field failure rate by 73% vs. legacy controllers. | Use Scenario: Battery-powered wall-mounted HVAC control interface with 5-year target service life on two AA cells. IC Role / Device Role / Timing Role: Low-power touch manager using wake-on-touch with configurable electrode subset scanning to extend battery life. Use Value: Achieves 5.2-year battery life at one touch event per hour-exceeds OEM specification by 20% without compromising responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8CTMA160-100AXI | Lacks integrated Cortex-M0+; requires external host MCU for gesture processing and firmware updates. | Suitable only where host processor handles algorithm execution and update orchestration. | Select when system already includes capable host MCU and design prioritizes BOM cost over firmware autonomy. |
| MTCH6302-I/SS | 16-channel max, no on-chip gesture engine, fixed 8-bit ADC resolution, no field-upgradable bootloader. | Limited to small-form-factor devices (≤4.3″ displays) with static UI and no field update requirement. | Select only for cost-sensitive consumer products with simple tap-only interaction and no regulatory update needs. |
Compared with CY8CTMA160-100AXI and MTCH6302-I/SS, CYAT81682-100AS61 uniquely combines high channel count, autonomous gesture processing, and secure field-upgradability-making it the only option for certified, long-lifecycle industrial and medical touch systems requiring zero-host dependency.
Availability
CYAT81682-100AS61 is available at Aetrix Electronics and suitable for industrial HMI development, medical diagnostic equipment manufacturing, and smart building control system integration requiring stable component supply and long-term lifecycle assurance.
Supply support for CYAT81682-100AS61 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 human-machine interface solutions with global wafer fabrication and packaging infrastructure.
CYAT81682-100AS61 belongs to the TrueTouch Gen6 product line, engineered specifically for high-reliability, noise-immune capacitive touch in safety-critical and regulated environments such as medical, industrial, and transportation systems.
FAQ
What is the maximum supported electrode count for CYAT81682-100AS61?
The device supports up to 100 physical touch channels, enabling configurations such as 10×10 mutual-capacitance grids or 100-segment self-capacitance sliders. Electrode count is constrained by total channel allocation-not by physical pin count-as routing is handled internally via multiplexed AFE paths.
Does CYAT81682-100AS61 require an external crystal oscillator?
No. The device integrates a precision internal RC oscillator trimmed to ±1.5% over temperature and voltage, eliminating need for external crystal. An optional 24 MHz external crystal may be used for tighter timing control in synchronous host interfaces, but is not required for basic operation or touch functionality.
Can CYAT81682-100AS61 operate in wet or gloved-finger conditions?
Yes. It implements proprietary water rejection algorithms and supports adjustable sensitivity thresholds to maintain reliable detection with 2 mm thick latex or nitrile gloves. Performance validation includes IEC 61000-4-2 ESD (±8 kV contact) and IEC 61000-4-4 EFT (4 kV) immunity testing under simulated condensation.
Is the firmware source code provided for CYAT81682-100AS61?
Infineon provides full firmware source code-including touch algorithm, gesture engine, and bootloader-under NDA for qualified customers. The code is delivered as ANSI C compatible with ModusToolbox IDE and includes API documentation, configuration utilities, and validated test suites for functional safety compliance (IEC 61508 SIL2).
CYAT81682-100AS61 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 ~ 105°C (TA)
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 100-TQFP (14x14)
CYAT81682-100AS61 FAQ
1.How can I place an order for CYAT81682-100AS61 through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT81682-100AS61 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 CYAT81682-100AS61 reliable?
The price and inventory of CYAT81682-100AS61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT81682-100AS61 is usually 5 days.
3.What payment methods are accepted for CYAT81682-100AS61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT81682-100AS61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT81682-100AS61?
CYAT81682-100AS61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT81682-100AS61 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 CYAT81682-100AS61?
For technical support, including CYAT81682-100AS61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT81682-100AS61 requirements.
6.How does Aetrix verify that CYAT81682-100AS61 is sourced from the original manufacturer or authorized distributors?
All CYAT81682-100AS61 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 CYAT81682-100AS61 meets industry standards.
7.What is the process for return or replacement of CYAT81682-100AS61?
All CYAT81682-100AS61 units undergo pre-shipment inspection (PSI). If there is an issue with CYAT81682-100AS61, 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 CYAT81682-100AS61 part is unused and in its original packaging.
Return procedure for CYAT81682-100AS61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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