CYAT847AZA98-42002

Overview

The CYAT847AZA98-42002 is a slave capacitive touchscreen controller within the PSoC™ Automotive Multitouch Generation 7XL Multichip series. It features a 32-bit Arm® Cortex® CPU and supports screen sizes up to 35 inches diagonal with a 6-mm electrode pitch. The device provides 98 sense pins, enabling up to 10320 intersections for high-resolution touch detection. It operates on a 3.0 V to 5.5 V analog supply and logic/digital I/Os ranging from 1.71 V to 5.5 V. Key performance metrics include a refresh rate of up to 120 Hz and TX frequency up to 150 kHz. Power consumption is configuration-dependent, reaching 260 mW in a 3-chip solution.

Feature Summary

• Multi-chip architecture with register-configurable 32-bit Arm® Cortex® CPU
• Supports screens up to 35-inch diagonal with 98 sense pins and 10320 intersections
• Integrated AutoArmor technology for electromagnetic emission and immunity improvement
• DualSense technology for water rejection and wet-finger tracking

Applications

• Automotive infotainment systems requiring large display support
• Multi-chip touchscreen configurations for ultra-large screens
• Applications demanding high noise suppression for display and EMI environments

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature range. The 'A' suffix indicates an automotive temperature range of -40°C to +85°C. Confirm the sensor configuration number (98) aligns with the design's pin count requirements. Ensure compatibility with the master controller in multi-chip setups as this unit functions as a slave device.

Selection Notes

Select this component when designing systems requiring support for displays larger than 19 inches, specifically up to 35 inches diagonal. The 98-sense-pin configuration allows for dense electrode pitches suitable for high-resolution interfaces. Consider the power budget carefully, as multi-chip solutions may consume up to 260 mW. Verify that the host system can handle the I2C communication rates of up to 1 Mbps.

Part Context

This part belongs to the Generation 7XL Multichip family, designed specifically for scaling beyond single-chip limitations. It complements master controllers (such as the CYAT837X series) to enable seamless touch coverage across very large automotive displays. The series emphasizes robustness against environmental factors like water and thick gloves while maintaining high frame rates.

Replacement Considerations

Direct replacements within the same generation include other CYAT847X variants with different sense pin counts (e.g., CYAT847AZA88-42002 or CYAT847AZA77-42002) if the application requires fewer channels. For non-multichip applications, consider the single-chip Gen7XL controllers like the CYAT817X series.