Infineon Technologies CYAT817AZS77-5A002

Overview

CYAT817AZS77-5A002 from Infineon is an AEC-Q100 qualified automotive-grade capacitive touchscreen controller featuring a 32-bit Arm® Cortex® CPU, 77 configurable sense pins, support for up to 10-finger multitouch, hover sensing up to 35 mm, and force touch capability. It delivers 30 mW average power consumption, operates across –40°C to 85°C, and targets in-vehicle infotainment displays with glove/water rejection and dual-sense architecture.

For engineers reviewing the CYAT817AZS77-5A002 datasheet, CYAT817AZS77-5A002 pinout, CYAT817AZS77-5A002 application, or CYAT817AZS77-5A002 equivalent, this device is selected for automotive touchscreen systems requiring robust EMI immunity, low-power wake-on-touch (< 50 µA), split-screen support, and CAN interface readiness via secondary SCB.

Technical Context

This controller implements a multi-phase TX architecture with up to 300 kHz TX frequency and high-order phase modulation to maximize SNR-enabling reliable operation with 5 V VCCTX supply and effective 20 V drive. Its integrated DSP performs real-time noise filtering and single-pass long-side scanning using 64 dedicated RX ADCs.

The device supports dual-sense capability for simultaneous water rejection and wet-finger tracking, plus automatic baseline adaptation to environmental drift. Force sensing uses five dedicated RX channels with 0.1 N resolution and 100 Hz refresh rate, implemented via rigid-body mechanical integration without external sensors.

Key Specifications

Pinout & Package

Package: 128-lead TQFP, 14 × 20 × 1.4 mm body, 0.5 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive touchscreen controller applications.

Compared with CYAT817AZS77-5A002, the -5A202 adds slider/button capability without increasing BOM cost or footprint, while the -5BFBA enables CAN telemetry and multimodal sensing at higher firmware complexity and unit cost.

Availability

CYAT817AZS77-5A002 is available at Aetrix Electronics and suitable for automotive infotainment, digital instrument clusters, and HUD touch overlays requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.

Supply support for CYAT817AZS77-5A002 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure.

This part belongs to the PSoC™ Automotive Multitouch generation 7XL product line, engineered specifically for high-reliability in-vehicle touch interfaces demanding robustness against moisture, temperature extremes, and EMI in modern EV and ADAS architectures.

FAQ

Does CYAT817AZS77-5A002 support CAN communication natively?

No. CAN interface requires custom firmware activation on the secondary SCB (I²C/SPI configurable as master/slave). The hardware supports CAN signaling only after firmware configuration-no dedicated CAN PHY is integrated. Standard operation uses I²C or SPI as primary host interface.

What is the maximum supported touchscreen size for CYAT817AZS77-5A002?

The device supports screens up to 15-inch diagonal with 16:10 aspect ratio and 5.3 mm electrode pitch. This is enabled by its 77 sense pins, 64-channel parallel RX ADC architecture, and single-pass long-side scanning capability-allowing full-frame acquisition within 250 Hz refresh window.

Is low-power wake-on-touch (< 50 µA) achievable without external components?

Yes. The 30 µW Deep Sleep mode and <50 µA wake-on-touch current are achieved using internal oscillator trimming, optimized sensor biasing, and autonomous interrupt generation-all without external RC networks or supplemental circuitry. Only VDDIO, VDDA, and VCCTX supplies are required.

Can CYAT817AZS77-5A002 perform force touch and hover sensing simultaneously?

Yes. Hover sensing (up to 35 mm) and force touch (0.5–10 N) operate concurrently using separate RX channel allocations and time-multiplexed scanning sequences. The integrated DSP handles real-time separation of hover proximity data and mechanical displacement signals without performance degradation.