CYAT837AZS88-42002

Overview

The CYAT837AZS88-42002 is a multi-chip capacitive touchscreen controller from the PSoC Automotive Generation 7XL family. It features a 32-bit Arm Cortex CPU and supports up to 88 sense I/Os with 192 channels, each equipped with its own ADC for single-pass long-side scanning. The device operates on logic and digital I/O supplies ranging from 1.71 V to 1.95 V and analog supplies from 3.0 V to 5.5 V. It is housed in a 128-pin TQFP package (14 × 20 × 1.4 mm) and is qualified to AEC-Q100 standards for automotive applications.

Feature Summary

• AEC-Q100 qualified for automotive electronics
• Integrated DSP and 192 independent ADC channels for fast data processing
• Supports multitouch glove tracking and water rejection via DualSense technology
• I2C slave interface supporting rates up to 1 Mbps

Applications

• Automotive touchscreen displays
• Trackpad interfaces
• Slider controls

Procurement Notes

Verify the ordering suffix 'S' indicates the -40°C to 105°C temperature range and tape-and-reel packaging. Confirm the specific sense I/O count of 88 matches the design requirements. Ensure compatibility with the host system's I2C communication speeds and voltage levels before procurement.

Selection Notes

Select this component for designs requiring high noise immunity and glove operation in automotive environments. Compare against the 'A' suffix variant if the application only requires the -40°C to 85°C range. Consider the multi-chip architecture power consumption, which varies between 174 mW and 260 mW depending on the solution configuration.

Part Context

This part belongs to the CYAT837X/847X series, where the '3' denotes a Master controller role. It shares the same package and core features as the CYAT837AZA88-42002 but differs in temperature rating and packaging format. The series supports screen sizes up to 35 inches diagonal with an effective 20-V drive capability.

Replacement Considerations

The CYAT837AZA88-42002 serves as a functional alternative with identical electrical characteristics but offers a lower temperature range (-40°C to 85°C) and tray packaging. Verify that the ambient operating conditions of the target application fall within the narrower range of the 'A' suffix variant.