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Infineon Technologies CYAT61658-56LWS41
- Part No.:
- CYAT61658-56LWS41
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
CYAT61658-56LWS41.pdf
- Description:
- TrueTouch
- Quantity:
- Payment:
- Shipping:
Inventory:4,537
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Product details
Overview
CYAT61658-56LWS41 from Infineon Technologies is a single-chip capacitive touch controller IC designed for multi-touch gesture recognition in mobile and portable devices. It integrates an analog front-end, 16-channel capacitive sensing engine, 32-bit ARM Cortex-M0+ core, and on-chip flash memory (64 KB), supporting up to 10 simultaneous touch points with <10 ms report rate at 100 Hz polling. It operates from 1.71 V to 3.6 V and features built-in noise immunity for operation in noisy RF environments.
For engineers reviewing the CYAT61658-56LWS41 datasheet, CYAT61658-56LWS41 pinout, CYAT61658-56LWS41 application, or CYAT61658-56LWS41 equivalent, key selection criteria include its integrated M0+ processor for on-device gesture processing, 16-sensor channel count, low-voltage operation range, I²C/SPI interface support, and factory-calibrated baseline tracking for stable performance across temperature and voltage variation.
Technical Context
The CYAT61658-56LWS41 implements a self-capacitive sensing architecture with programmable charge-time measurement (CTMU) per electrode, enabling high-resolution position interpolation. Its embedded ARM Cortex-M0+ executes firmware for real-time gesture classification-including swipe, pinch, rotate, and tap-without host CPU intervention.
It supports both I²C (up to 1 MHz) and SPI (up to 10 MHz) host interfaces, includes hardware-accelerated digital filtering (averaging, median, high-pass), and features adaptive baseline compensation updated every 250 ms to maintain sensitivity during environmental drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Touch Channels | 16 independent analog input channels for electrode scanning |
| Max Touch Points | 10 simultaneous touches with centroid resolution ≤0.5 mm |
| Supply Voltage | 1.71 V–3.6 V - enables direct connection to single-cell Li-ion/Li-poly battery rails |
| Report Rate | ≤10 ms at 100 Hz - ensures responsive UI interaction without perceptible latency |
| Embedded Core | ARM Cortex-M0+ @ 24 MHz - runs full gesture engine and calibration algorithms autonomously |
| Flash Memory | 64 KB - stores firmware, configuration tables, and user-defined gesture profiles |
| Interface Options | I²C (Standard/Fast/High-Speed modes) and 4-wire SPI - simplifies integration with diverse host SoCs |
Pinout & Package
Package: 56-pin WLCSP (Wafer-Level Chip Scale Package), 3.29 mm × 3.29 mm, 0.4 mm pitch, bottom-side solder balls.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O supply rail | Supplies 1.71–3.6 V to digital interface pins (I²C/SPI) |
| VDDA | Analog supply rail | Separate 1.71–3.6 V supply for sensor AFE to minimize noise coupling |
| SDA / SCL | I²C bidirectional data/clock | Open-drain, 3.3 V tolerant; internal pull-ups disabled by default |
| MOSI / MISO / SCLK / CS# | SPI interface signals | Configurable as primary or secondary interface; CS# active-low enables multi-drop |
| INT# | Interrupt output | Active-low open-drain signal indicating new touch data ready for host read |
| RST# | Hardware reset input | Pulse ≥1 µs resets internal state machine and reinitializes firmware |
| TP0–TP15 | Capacitive sense electrodes | Direct connections to touch panel traces; each supports self-capacitance measurement |
Key Features
| Feature | Design Value |
|---|---|
| On-chip gesture engine | Real-time execution of swipe, pinch, rotate, and multi-finger tap without host CPU load |
| Adaptive baseline tracking | Automatic recalibration every 250 ms to compensate for temperature/humidity drift |
| RF noise suppression | Dedicated hardware filters reject GSM/UMTS/LTE burst noise up to 217 Hz modulation |
| Low-power sleep mode | 1.2 µA typical current draw with wake-on-touch enabled and 50 ms response latency |
| Factory-trimmed sensor gain | Per-electrode gain calibration stored in one-time-programmable (OTP) memory ensures uniform sensitivity |
Applications
| Smartphone Touch Interface | Tablet Multi-Touch Panel |
|---|---|
Use Scenario: Main touchscreen controller in flagship Android smartphones with edge-to-edge OLED displays. IC Role / Device Role / Timing Role: Primary capacitive touch controller managing all user gestures and reporting coordinates via I²C to application processor. Use Value: Enables sub-10 ms touch latency and robust palm rejection through on-chip gesture classification, reducing host-side processing overhead. | Use Scenario: Integrated touch solution for 10.1-inch Android tablets with stylus support and hover detection. IC Role / Device Role / Timing Role: Dual-role controller handling both finger touch and active stylus proximity sensing using shared electrode array. Use Value: Supports 10-point tracking with <0.5 mm positional accuracy and 120 Hz report rate for smooth sketching experience. |
| Wearable Touch Display | Industrial HMI Panel |
Use Scenario: Round 1.3-inch AMOLED smartwatch display with curved glass overlay and glove-mode operation. IC Role / Device Role / Timing Role: Low-voltage touch controller operating from 1.8 V supply, configured for small electrode pitch and high SNR in compact form factor. Use Value: Delivers reliable touch detection under thick cover glass (up to 3 mm) and with wet fingers, enabled by programmable CTMU timing and digital filtering. | Use Scenario: Ruggedized 7-inch industrial control panel deployed in factory automation with EMI-heavy environments. IC Role / Device Role / Timing Role: Immune touch controller interfacing with microcontroller over SPI, providing deterministic interrupt-driven reporting. Use Value: Maintains stable operation amid 2 kV ESD events and 10 V/m RF fields due to integrated noise rejection and metal-over-glass (MOG) compatibility. |
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, 16-bit ADC resolution, no embedded ARM core - requires external host for gesture processing | Lacks on-device gesture engine; suitable only where host MCU has sufficient cycles for real-time classification | Select when system already uses high-performance host processor and cost-sensitive BOM favors simpler controller IC |
| ROHM BU21022GWZ | 12-channel, 8-bit internal ADC, fixed-function logic only - no firmware programmability or gesture customization | Supports basic tap/swipe only; no pinch/rotate or multi-finger coordinate reporting | Choose for cost-constrained consumer electronics requiring only fundamental touch functionality |
Compared with mXT224E and BU21022GWZ, CYAT61658-56LWS41 uniquely combines 16-channel sensing, embedded M0+ core, and factory-trimmed analog front-end - enabling full gesture autonomy, rapid design iteration via firmware updates, and consistent performance across production units without host-side tuning.
Availability
CYAT61658-56LWS41 is available at Aetrix Electronics and suitable for smartphone touch interfaces, tablet multi-touch panels, and industrial HMI systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for CYAT61658-56LWS41 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, sensor, and security ICs, with leadership in automotive, industrial, and IoT silicon solutions.
CYAT61658-56LWS41 belongs to Infineon's TrueTouch® family, engineered specifically for high-reliability, low-power, and noise-immune capacitive touch control in mobile and ruggedized human-machine interfaces.
FAQ
What is the maximum number of electrodes supported by CYAT61658-56LWS41?
The CYAT61658-56LWS41 supports up to 16 capacitive sense electrodes (TP0–TP15), configurable as self-capacitive inputs. All 16 channels can be scanned simultaneously in a single frame, enabling full-panel coverage for displays up to 10.1 inches with fine electrode pitch and minimal crosstalk.
Does CYAT61658-56LWS41 require external memory for firmware storage?
No. The device integrates 64 KB of on-chip flash memory, which stores the complete touch firmware, calibration data, and user-defined gesture profiles. No external EEPROM or flash is needed for standard operation, reducing BOM count and PCB footprint.
Can CYAT61658-56LWS41 operate with wet fingers or gloves?
Yes. Its programmable charge-time measurement unit (CTMU) and adaptive digital filtering allow configuration for enhanced signal-to-noise ratio under wet conditions or with thin gloves. Factory-trimmed gain and baseline tracking maintain stable detection thresholds across environmental variations.
Is there hardware support for ESD protection on the touch electrode pins?
Yes. Each TPx pin includes integrated 8 kV HBM ESD protection diodes to GND and VDDA, validated per JEDEC JS-001. This eliminates need for external TVS devices on electrode traces, simplifying layout and improving reliability in handheld and wearable designs.
CYAT61658-56LWS41 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)
CYAT61658-56LWS41 FAQ
1.How can I place an order for CYAT61658-56LWS41 through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT61658-56LWS41 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 CYAT61658-56LWS41 reliable?
The price and inventory of CYAT61658-56LWS41 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT61658-56LWS41 is usually 5 days.
3.What payment methods are accepted for CYAT61658-56LWS41?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT61658-56LWS41 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT61658-56LWS41?
CYAT61658-56LWS41 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT61658-56LWS41 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 CYAT61658-56LWS41?
For technical support, including CYAT61658-56LWS41 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT61658-56LWS41 requirements.
6.How does Aetrix verify that CYAT61658-56LWS41 is sourced from the original manufacturer or authorized distributors?
All CYAT61658-56LWS41 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 CYAT61658-56LWS41 meets industry standards.
7.What is the process for return or replacement of CYAT61658-56LWS41?
All CYAT61658-56LWS41 units undergo pre-shipment inspection (PSI). If there is an issue with CYAT61658-56LWS41, 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 CYAT61658-56LWS41 part is unused and in its original packaging.
Return procedure for CYAT61658-56LWS41:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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