CYAT81685-100AA61

Touch Screen Controllers Overview

The CYAT81685-100AA61 is a capacitive touchscreen controller from Infineon Technologies, part of the TrueTouch family. It integrates an ARM Cortex CPU and supports I2C and SPI interfaces. The device operates within a supply voltage range of 1.71 V to 5.5 V and draws approximately 20 mA during operation. It features four ADC inputs and is housed in a 100-pin TQFP package. Designed for industrial applications, it functions reliably between -40°C and +85°C.

Touch Screen Controllers Feature Summary

• Capacitive touchscreen controller with integrated ARM Cortex CPU
• Dual interface support: I2C and SPI
• Wide operating voltage range: 1.71 V to 5.5 V
• Industrial temperature rating: -40°C to +85°C

Touch Screen Controllers Applications

• Industrial human-machine interfaces (HMI)
• General-purpose capacitive touch sensing
• Embedded control systems requiring robust touch input

Touch Screen Controllers Procurement Notes

Verify RoHS compliance status through official Infineon documentation before procurement. Confirm moisture sensitivity level requirements for surface mount assembly processes. Ensure the 100-pin TQFP package dimensions align with the target PCB layout constraints.

Touch Screen Controllers Selection Notes

Select this component when a dedicated capacitive touch controller with an embedded processor core is required. The 100-pin TQFP package suits designs needing multiple sensor lines or display connections. Verify that the 20 mA operational current fits the system power budget.

Touch Screen Controllers Part Context

This part belongs to the CYAT81685 series of TrueTouch controllers. It is distinct from other variants in the TSG6_XL family by its specific pin count and feature set. The device serves as a standalone solution for touch detection without requiring an external host MCU for basic operations.

Touch Screen Controllers Replacement Considerations

Cross-reference with CYAT81689-100AA61Z and CYAT81688-100AA61 for potential pin-compatible alternatives. Verify functional equivalence regarding interface protocols and supported sensor configurations before substitution.