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Product Detailed Parameters
- Description：TrueTouch
- Series：PSOC™6L
- Mfr：Infineon Technologies
- Package：Tray
- Touchscreen：2 Wire Capacitive
- Resolution (Bits)：32 b
- Interface：I2C, SPI
- Voltage Reference：-
- Voltage - Supply：1.71V ~ 1.95V, 3V ~ 5.5V
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：56-VFQFN Exposed Pad
- Supplier Device Package：56-QFN (8x8)
- Current - Supply：-
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The CYAT71658-56LWS41 is a capacitive touchscreen controller from Infineon's PSoC Automotive Multitouch Generation 6L series, designed for automotive applications. It features a 32-bit Arm Cortex CPU and supports up to ten fingers with thin gloves or two fingers with thick gloves. The device operates within an ambient temperature range of -40°C to 105°C (Automotive-S grade). Electrical specifications include a digital supply voltage of 1.71 V to 1.95 V or 3.0 V to 5.5 V, and an analog supply of 3.0 V to 5.5 V. Communication interfaces include I2C at 100/400 kbps and SPI at up to 8 Mbps. It is housed in a 56-pin QFN package.
Feature Summary
- AEC-Q100 qualified for automotive reliability
- Supports wet-finger tracking and water rejection via DualSense technology
- AutoArmor improves electromagnetic emissions and immunity
- Automatic mode switching between bare finger, glove, and wet touch
Applications
- Automotive infotainment systems
- Vehicle instrument clusters
- Center console touch panels
Procurement Notes
Verify the specific suffix LWS41 against the official datasheet to confirm the package type, temperature grade, and reel quantity. Ensure compatibility with the host processor's interface requirements before ordering.
Selection Notes
Select this model for applications requiring support for thick gloves (up to 5 mm) and operation in high-temperature environments up to 105°C. Confirm that the system design accommodates the 56-pin QFN footprint and required external decoupling components.
Part Context
This component belongs to the CYAT7165X family, which is optimized for trackpad and smaller touchscreen applications compared to the CYAT8165X series. It shares core sensing technologies but differs in pin count and maximum sensor size support.
Replacement Considerations
Check for updated revisions of the CYAT7165X series. Verify if newer generation controllers offer improved SNR or additional features while maintaining pin compatibility.
FAQ
What is the maximum screen size supported?
The controller supports screens up to 8.5-inch diagonal with a 6.2-mm electrode pitch.
How does the device handle water interference?
It uses DualSense technology to reject water droplets and track wet fingers, preventing false touches.
What are the power supply requirements?
Digital I/Os require 1.71–1.95 V or 3.0–5.5 V, while the analog supply requires 3.0–5.5 V.
