Infineon Technologies CYAT817AZA88-5B202

Overview

CYAT817AZA88-5B202 from Infineon is an AEC-Q100 qualified automotive-grade capacitive touchscreen controller featuring a 32-bit Arm® Cortex® CPU, 88 configurable sense pins (77 TX/RX + 5 TX-only), support for 10-finger multitouch, hover sensing up to 35 mm, and force touch with 0.1 N resolution. It delivers 250 Hz refresh rate, 300 kHz TX frequency, and operates across –40°C to 85°C for in-vehicle infotainment and digital cockpit displays.

For engineers reviewing the CYAT817AZA88-5B202 datasheet, CYAT817AZA88-5B202 pinout, CYAT817AZA88-5B202 application, or CYAT817AZA88-5B202 equivalent, this device supports I²C/SPI host interfaces, CAN safety channel, low-power wake-on-touch (<50 µA), water rejection, glove tracking (≤1 mm), and split-screen touch handling - critical for automotive HMI design validation and EMI-robust sensor integration.

Technical Context

This PSoC™ Automotive Multitouch generation 7XL controller implements dual-sense architecture for simultaneous wet-finger and water rejection, with high-order multi-phase TX (17-phase) enabling 20 V effective drive at 5 V VCCTX for improved SNR. Its integrated DSP performs real-time noise filtering and baseline tracking across 64 dedicated RX ADC channels.

The device uses configurable SCB peripherals for primary I²C/SPI (up to 8 Mbps) and secondary safety interface (I²C/SPI master/slave or CAN), where CAN requires custom firmware enablement. Force sensing leverages five parallel RX channels with rigid-body mechanics and 100 μm/10 N displacement sensitivity.

Key Specifications

Pinout & Package

Package: 128LD TQFP (14 × 20 × 1.4 mm, 0.5 mm pitch). Pinout validated per Infineon CYAT817X datasheet summary Rev. *B (2024-08-02), Table 1 and ordering code definitions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CYAT817AZA88-5BFBA, the -5B202 reduces BOM cost by disabling slider/haptic/proximity functions while retaining CAN, force touch, and AEC-Q100 compliance; versus CYAT817AZS88-5B202, it adds automotive qualification, extended temperature range, and production traceability - essential for OEM Tier-1 supply chains.

Availability

CYAT817AZA88-5B202 is available at Aetrix Electronics and suitable for automotive infotainment systems, digital instrument clusters, head-up display overlays, and passenger seat entertainment panels requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for CYAT817AZA88-5B202 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 device belongs to the PSoC™ Automotive Multitouch generation 7XL product line, designed specifically for high-reliability, EMI-resilient capacitive touch interfaces in automotive cockpits and ADAS human-machine interaction systems.

FAQ

Does CYAT817AZA88-5B202 support CAN interface out of the box?

No. The CAN interface is implemented as a secondary safety communication channel and requires custom firmware activation. Hardware pins (CANH/CANL) are present and electrically supported, but the CAN peripheral must be enabled and configured via Infineon-provided SDK and bootloader tools before use in safety-critical applications.

What is the maximum electrode pitch supported for 88-pin configuration?

The CYAT817AZA88-5B202 supports up to 5.3 mm electrode pitch in 16:10 aspect ratio layouts, validated for 15-inch diagonal screens. This pitch enables robust mutual-capacitance sensing while maintaining SNR above 25 dB under automotive EMI conditions per Infineon's generation 7XL reference designs.

How does the device handle water contamination on the touch surface?

It uses dual-sense capability with independent TX/RX phase sequencing to distinguish water films from intentional touch. Water rejection is achieved by comparing signal amplitude and phase shift across two sensing cycles, allowing continued operation with wet fingers and splash resistance without false triggers.

Is Android driver support included with this part number?

Yes. Infineon provides certified Android HAL drivers and kernel modules for CYAT817X devices, including CYAT817AZA88-5B202. These drivers support I²C/SPI transport, multi-finger reporting, force data, hover events, and runtime diagnostics - validated on Android 11 through 14 for automotive IVI platforms.