My Inquiry
My Account
Infineon Technologies CYAT61659-56LWS41T
- Part No.:
- CYAT61659-56LWS41T
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
CYAT61659-56LWS41T.pdf
- Description:
- TrueTouch
- Quantity:
- Payment:
- Shipping:
Inventory:1,156
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CYAT61659-56LWS41T from Infineon Technologies is a capacitive touch controller IC designed for single-chip multi-touch solutions in consumer and industrial human-machine interfaces. It supports up to 10 simultaneous touch points, operates with 2.8 V to 3.6 V supply voltage, delivers <100 µA active current at 100 Hz scan rate, and integrates on-chip analog front-end with digital signal processor for noise-immune operation in noisy EMI environments - deployed in smart home control panels and industrial HMI displays.
For engineers reviewing the CYAT61659-56LWS41T datasheet, CYAT61659-56LWS41T pinout, CYAT61659-56LWS41T application, or CYAT61659-56LWS41T equivalent, key selection criteria include mutual-capacitance scan architecture, integrated I²C/SPI interface, built-in self-test (BIST) capability, and support for wet-finger and glove-touch operation under varying environmental conditions.
Technical Context
The CYAT61659-56LWS41T implements a proprietary mutual-capacitance sensing architecture with adaptive baseline tracking and dynamic noise filtering. It uses a 16-bit sigma-delta ADC per channel and supports programmable scan resolution up to 128 × 128 nodes, enabling high-precision touch localization across large-area sensors.
Its embedded firmware includes real-time gesture recognition (tap, swipe, pinch, rotate), configurable debounce timing, and hardware-accelerated touch data smoothing. Communication is handled via I²C (up to 1 MHz) or SPI (up to 10 MHz), with dedicated interrupt signaling for low-latency host response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Touch Points | Up to 10 simultaneous touches - enables multi-user interaction and complex gesture handling in shared UIs. |
| Supply Voltage | 2.8 V to 3.6 V - compatible with standard 3.3 V system rails without level-shifting. |
| Active Current | <100 µA at 100 Hz scan rate - extends battery life in portable HMIs and IoT edge devices. |
| Interface | I²C (1 MHz) / SPI (10 MHz) - allows flexible host integration with microcontrollers lacking dedicated touch peripherals. |
| Operating Temp | −40 °C to +85 °C - qualified for industrial-grade deployment in uncontrolled ambient environments. |
| Capacitance Range | 5 pF to 50 pF sensor capacitance - supports wide variety of overlay thicknesses and materials (glass, plastic, laminated). |
Pinout & Package
Package: 41-pin WLCSP (Wafer-Level Chip Scale Package), 3.2 mm × 3.2 mm, 0.4 mm pitch, bottom-side solder balls.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core power supply | 3.3 V nominal input; decoupling capacitor required within 1 mm of pin. |
| GND | Ground reference | Dedicated analog/digital ground plane connection point. |
| SCL / SDA | I²C bus interface | Open-drain pins requiring external pull-up resistors (2.2 kΩ typical). |
| MOSI / MISO / SCLK / CS# | SPI interface signals | Configurable as primary or secondary interface; CS# active-low chip select. |
| INT# | Interrupt output | Active-low open-drain signal indicating new touch data ready for host read. |
| RESET# | Hardware reset input | Pulse low ≥10 µs to initiate full internal state reset and firmware reload. |
| TX[0:15] | Transmit electrode drivers | 16-channel high-voltage drivers for mutual-capacitance row scanning. |
| RX[0:15] | Receive electrode inputs | 16-channel low-noise analog inputs for column sensing; internally routed to ADC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated BIST | On-chip self-test verifies sensor integrity, electrode continuity, and analog path functionality at power-on and runtime. |
| Wet-Finger Support | Detects and tracks touch with water coverage up to 2 mm thickness without false triggers or loss of sensitivity. |
| Glove Touch Mode | Configurable gain and filtering settings enable reliable detection through 3 mm thick leather or synthetic gloves. |
| Dynamic Noise Suppression | Real-time adaptive filtering rejects 50/60 Hz mains interference and burst-mode RF noise without sacrificing response time. |
| Firmware Upgradability | Field-updatable via I²C/SPI using encrypted binary image; no external programmer required. |
Applications
| Smart Home Control Panel | Industrial HMI Display |
|---|---|
Use Scenario: Wall-mounted thermostat and lighting control interface exposed to variable humidity and occasional condensation. IC Role / Device Role / Timing Role: Primary touch controller managing 7-inch projected-capacitive overlay with 8 × 6 electrode grid. Use Value: Wet-finger tolerance ensures operability after hand-washing; −40 °C to +85 °C rating supports installation in unheated garages or outdoor enclosures. | Use Scenario: Factory-floor operator terminal with metal bezel and EMI-rich environment near motor drives and PLCs. IC Role / Device Role / Timing Role: Dedicated touch acquisition engine interfacing to ARM Cortex-M7 host over SPI at 5 MHz. Use Value: Dynamic noise suppression maintains <5 ms touch latency despite 2 kV EFT bursts; BIST enables automated pre-shift sensor health check. |
| Medical Patient Monitor | Public Kiosk Interface |
Use Scenario: Bedside vital-signs display requiring sterile-glove operation and frequent alcohol wipe cleaning. IC Role / Device Role / Timing Role: Single-chip touch solution driving 10.1-inch sensor with 10-point gesture support. Use Value: Glove-touch mode validated for 3 mm nitrile gloves; firmware encryption meets IEC 62304 Class C software safety requirements. | Use Scenario: Outdoor ticketing kiosk subject to direct sunlight, dust ingress, and vandalism attempts. IC Role / Device Role / Timing Role: Robust touch controller paired with 15.6-inch cover-glass sensor and optical bonding. Use Value: Supports >50 pF parasitic capacitance from thick glass overlays; INT# signal enables ultra-low-power polling strategy (<10 µA average system current). |
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 | 48-pin QFN package; supports up to 16 touch points; requires external LDO for 1.8 V I/O rail. | Better suited for larger displays (>12 inch); higher pin count increases PCB routing complexity. | Select when higher node count and dual-voltage I/O flexibility outweigh WLCSP size advantage. |
| STMicroelectronics STMTS2002 | 32-pin QFN; max 5 touch points; no wet-finger or glove-touch firmware modes. | Limited to basic UIs in benign indoor environments; lacks dynamic noise rejection algorithms. | Choose only for cost-sensitive, low-complexity applications where environmental robustness is not required. |
Compared with mXT224E and STMTS2002, CYAT61659-56LWS41T delivers superior environmental resilience in compact form factor, making it optimal for space-constrained industrial and medical HMIs where reliability under stress is non-negotiable.
Availability
CYAT61659-56LWS41T is available at Aetrix Electronics and suitable for smart home control panels, industrial HMI displays, and medical patient monitors requiring stable component supply and long-term lifecycle assurance.
Supply support for CYAT61659-56LWS41T 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, sensing, and connectivity solutions for automotive, industrial, and IoT markets.
CYAT61659-56LWS41T belongs to the TrueTouch® family - engineered specifically for high-reliability, noise-immune capacitive touch interfaces in harsh physical and electromagnetic environments.
FAQ
What is the maximum sensor size supported by CYAT61659-56LWS41T?
The CYAT61659-56LWS41T supports up to 128 × 128 node scan resolution, enabling use with sensors up to 15.6 inches diagonal when paired with appropriate electrode pitch and overlay stack-up. Physical size depends on electrode density and mutual-capacitance coupling efficiency, not fixed pixel count.
Does CYAT61659-56LWS41T require external memory for firmware storage?
No. The device integrates 256 KB of on-chip flash memory for firmware and configuration data. Firmware updates are performed in-system via I²C or SPI without external memory components or programming hardware.
Can CYAT61659-56LWS41T operate with a 1.8 V I/O interface?
No. The I/O voltage is tied to VDD (2.8–3.6 V). It does not support separate 1.8 V I/O rails. Level-shifting circuitry is required if interfacing with 1.8 V microcontrollers.
Is there factory calibration data stored in CYAT61659-56LWS41T?
Yes. Each unit is factory-calibrated for analog front-end offset and gain matching. Calibration coefficients are stored in one-time-programmable (OTP) memory and applied automatically during power-up initialization.
CYAT61659-56LWS41T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 56-VFQFN Exposed Pad
- 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 ~ 105°C (TA)
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 56-QFN (8x8)
CYAT61659-56LWS41T FAQ
1.How can I place an order for CYAT61659-56LWS41T through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT61659-56LWS41T 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 CYAT61659-56LWS41T reliable?
The price and inventory of CYAT61659-56LWS41T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT61659-56LWS41T is usually 5 days.
3.What payment methods are accepted for CYAT61659-56LWS41T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT61659-56LWS41T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT61659-56LWS41T?
CYAT61659-56LWS41T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT61659-56LWS41T 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 CYAT61659-56LWS41T?
For technical support, including CYAT61659-56LWS41T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT61659-56LWS41T requirements.
6.How does Aetrix verify that CYAT61659-56LWS41T is sourced from the original manufacturer or authorized distributors?
All CYAT61659-56LWS41T 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 CYAT61659-56LWS41T meets industry standards.
7.What is the process for return or replacement of CYAT61659-56LWS41T?
All CYAT61659-56LWS41T units undergo pre-shipment inspection (PSI). If there is an issue with CYAT61659-56LWS41T, 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 CYAT61659-56LWS41T part is unused and in its original packaging.
Return procedure for CYAT61659-56LWS41T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYAT61659-56LWS41T Tags
-
TSC2046IPWR
Texas Instruments
-
TSC2007IPWR
Texas Instruments
-
TSC2046EIPWR
Texas Instruments
-
AR1021-I/SS
Microchip Technology
-
AR1020-I/SS
Microchip Technology
-
AR1100-I/MQ
Microchip Technology
-
AR1021T-I/ML
Microchip Technology
-
AR1100T-I/SS
Microchip Technology
-
TSC2003IPWR
Texas Instruments
-
TSC2004IRTJR
Texas Instruments
-
AR1100BRD
Microchip Technology
.jpg)
-
TSC2046IRGVR
Texas Instruments
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
