CYAT81685-100AS61Z

Touch Screen Controllers Overview

The Infineon Technologies CYAT81685-100AS61Z is a capacitive touchscreen controller within the TrueTouch Standard Series. It integrates an ARM Cortex CPU for advanced signal processing and gesture recognition. The device operates on a supply voltage range of 1.71 V to 5.5 V with a typical operating current of 20 mA. It supports I2C and SPI interfaces and features four ADC inputs. The component is housed in a TQFP-100 package, suitable for surface-mount installation, and functions reliably across an extended temperature range from -40°C to +105°C.

Touch Screen Controllers Feature Summary

• Integrated ARM Cortex CPU for programmable touch processing
• Supports I2C and SPI communication interfaces
• Extended industrial temperature operation (-40°C to +105°C)
• Four dedicated ADC inputs for sensor configuration

Touch Screen Controllers Applications

• Industrial control panels requiring wide temperature tolerance
• Automotive infotainment systems
• Medical equipment interfaces

Touch Screen Controllers Procurement Notes

Verify the specific suffix 'Z' against official documentation to confirm RoHS compliance status, as datasheet references may vary by revision. Confirm moisture sensitivity levels prior to PCB assembly. Factory packaging quantities are typically listed as 900 units per tray; verify current availability directly with authorized distributors due to potential supply chain variations.

Touch Screen Controllers Selection Notes

Select this model when extended temperature performance up to +105°C is required, distinguishing it from commercial variants limited to +85°C. Ensure the design accommodates the TQFP-100 footprint. Verify that the host system supports the necessary I2C or SPI protocols and provides the required 1.71V to 5.5V power rail.

Touch Screen Controllers Part Context

This part belongs to the CYAT81685 series, designed for high-performance capacitive touch applications. Variants such as CYAT81685-100AA61 share similar electrical characteristics but differ in operating temperature ranges and suffix codes. The AS61Z designation specifically indicates the extended temperature grade and packaging configuration.

Touch Screen Controllers Replacement Considerations

CYAT81685-100AS77Z is a verified alternative within the same series offering identical extended temperature ratings and pinout compatibility. CYAT81685-100AA61 serves as a substitute if commercial temperature range (+85°C) suffices for the application.