CYAT847AZS98-42002

Overview

The CYAT847AZS98-42002 is a PSoC™ Automotive Generation 7XL Multichip capacitive touchscreen controller manufactured by Infineon Technologies. It operates as a slave device within a multi-chip architecture, featuring a 32-bit Arm® Cortex® CPU and register-configurable settings. The component supports up to 98 sense I/Os with an effective 20-V drive for enhanced signal-to-noise ratio. It provides noise-suppression technologies for display and EMI, including AutoArmor and DualSense for water rejection and wet-finger tracking. The device accommodates multitouch glove operation and reports up to ten fingers.

Feature Summary

• Automotive AEC-Q100 qualified with -40°C to 105°C temperature range (Automotive-S grade)
• Multi-chip slave configuration supporting screen sizes up to 35-inch diagonal
• Integrated DSP for faster scanning and lower noise with 192 channels each having its own ADC
• Supports Android driver, field upgrades via bootloader, and sensor self-test

Applications

• Automotive HMI displays and panels
• HVAC control interfaces
• Industrial touchscreens

Procurement Notes

Verify the specific ordering suffix 'S' indicates the Automotive-S temperature range (-40°C to 105°C) rather than the standard Automotive-A range. Confirm that the system design accounts for the multi-chip slave role, requiring a compatible master controller. Ensure the host interface matches the specified I2C slave rates of 100 kbps, 400 kbps, or 1 Mbps.

Selection Notes

Select this model when a slave controller is required for large-screen automotive applications exceeding 35 inches or high-intersection counts. The 'S' suffix is mandatory for systems operating in environments reaching 105°C. Compare against the 'A' suffix variants if the application only requires the -40°C to 85°C range. Verify power supply requirements for the 3.0 to 5.5 V analog and logic domains.

Part Context

This part belongs to the PSoC™ Automotive Generation 7XL Multichip family. It is functionally similar to the CYAT847AZA98-42002 but differs in the temperature rating suffix ('S' vs 'A'). It complements master controllers like the CYAT837 series to form complete multi-chip solutions for complex touchscreen stacks.

Replacement Considerations

Direct replacements include other CYAT847X/837X multichip controllers from the same generation. Substitutes must match the slave configuration and pin count (98 sense I/Os). Verify compatibility with the existing master controller and ensure the replacement meets the required ambient temperature specifications.