Infineon Technologies CYAT847AZA61-22002

Overview

CYAT847AZA61-22002 from Infineon Technologies is an automotive-grade capacitive touchscreen controller IC, serving as a slave device in multi-chip PSoC™ Generation 7XL touch systems. It features a 32-bit Arm® Cortex® CPU, supports up to 61 sense I/Os, operates across -40°C to 85°C, delivers 5-V TX drive with multi-phase capability, and enables ten-finger tracking with thin-glove (≤1 mm) and wet-finger operation - deployed in center-stack infotainment displays.

For engineers reviewing the CYAT847AZA61-22002 datasheet, CYAT847AZA61-22002 pinout, CYAT847AZA61-22002 application, or CYAT847AZA61-22002 equivalent, key selection criteria include glove/water rejection performance, I²C slave interface timing (up to 1 Mbps), 100-pin TQFP package compatibility, SNR optimization via 17-phase TX, and AEC-Q100 Grade 2 qualification for automotive interior HMI systems.

Technical Context

This slave controller operates in synchronized multi-chip architectures with master devices (e.g., CYAT837X series), handling dedicated subsets of sense channels - here, 61 sense I/Os mapped to segmented electrode zones. It executes register-configurable scanning sequences under host I²C control, leveraging integrated DSP per channel for real-time noise filtering and baseline adaptation.

The device implements DualSense sensing architecture for simultaneous self-capacitance and mutual-capacitance measurement, enabling robust water rejection and large-object discrimination. Its AutoArmor EMI mitigation suite includes display-noise suppression and emissions shaping, while DisplayArmor coordinates timing with LCD/AMOLED refresh cycles to minimize interference.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 14 × 1.4 mm, 0.5-mm pitch), RoHS-compliant, tray-packaged.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CYAT847AZS61-22002, this part trades extended temperature tolerance for lower cost and qualification scope; versus MA321200SLV-100, it delivers superior environmental robustness but demands tighter layout control for EMI-sensitive zones.

Availability

CYAT847AZA61-22002 is available at Aetrix Electronics and suitable for center-stack infotainment systems, digital instrument clusters, and rear-seat entertainment tablets requiring stable component supply, AEC-Q100 compliance, and production-ready touch firmware integration.

Supply support for CYAT847AZA61-22002 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 microcontrollers, and sensing solutions, with global R&D centers and ISO/TS 16949-certified manufacturing.

This device belongs to the PSoC™ Automotive Multitouch Generation 7XL product line, engineered specifically for AEC-Q100-compliant, multi-chip capacitive touch systems in automotive human-machine interfaces requiring robust operation under moisture, temperature extremes, and EMI stress.

FAQ

Is CYAT847AZA61-22002 a standalone touchscreen controller?

No. It functions exclusively as a slave device in multi-chip configurations, requiring a master IC (e.g., CYAT837X series) to coordinate timing, firmware updates, and host communication. It lacks boot ROM, external memory interface, and standalone I²C address arbitration logic.

Does this part support SPI or UART host interfaces?

No. CYAT847AZA61-22002 supports I²C only as its primary host interface, with fixed slave addressing and no hardware SPI or UART peripherals. Host communication must be implemented via I²C at up to 1 Mbps with standard clock stretching support.

What is the maximum electrode pitch supported with this controller?

The device supports up to 6-mm electrode pitch when used in conjunction with master IC timing coordination and recommended sensor stackup (e.g., Manhattan or diamond patterns on PET/glass). Performance degrades beyond 6 mm due to reduced SNR and increased crosstalk in 61-I/O configuration.

Can CYAT847AZA61-22002 operate without a companion master IC?

No. It has no autonomous operation mode. All initialization, calibration, scan scheduling, and report formatting depend on register writes and synchronization signals from a designated master IC (e.g., CYAT837AZA98-42002). Standalone use results in non-functional sense channels and unresponsive I²C interface.