CYAT81650-64AS48T

Overview

The CYAT81650-64AS48T is a capacitive touchscreen controller from Infineon's TrueTouch series, specifically the CYAT8165x family. It integrates an ARM Cortex CPU for advanced signal processing and supports both I2C and SPI interfaces. The device operates within a supply voltage range of 1.71 V to 5.5 V and draws a maximum operating current of 20 mA. It is housed in a TQFP-64 package suitable for surface mount technology (SMD/SMT). The component is rated for industrial temperatures, functioning between -40°C and +85°C, and features a 32-bit resolution architecture.

Feature Summary

• Integrated ARM Cortex CPU for enhanced processing capabilities
• Dual interface support: I2C and SPI
• Wide supply voltage range: 1.71 V to 5.5 V
• Industrial temperature rating: -40°C to +85°C

Applications

• Capacitive slider controllers
• Capacitive touchscreen systems
• Industrial human-machine interfaces (HMI)
• Consumer electronics with touch input requirements

Procurement Notes

Verify the specific suffix 'AS48T' against official Infineon documentation to confirm package type and tape/reel specifications. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles as defined in the datasheet. Confirm availability through authorized distributors, noting that production lead times may vary based on manufacturing schedules.

Selection Notes

Select this model when an integrated processor is required for complex gesture recognition or custom touch algorithms. The TQFP-64 package offers a balance of pin count and board space. Verify that the system design supports the 1.71 V minimum supply voltage and that the I2C/SPI bus speeds are compatible with the host microcontroller.

Part Context

This part belongs to the Infineon TrueTouch CYAT8165x series, which combines capacitive sensing with embedded processing. Unlike basic touch controllers, this series leverages the ARM Cortex core to offload processing tasks from the main system CPU, enabling more responsive touch experiences and reduced power consumption in active modes.

Replacement Considerations

Direct replacements within the same family include CYAT81650-64AA48T, though packaging differences (Reel vs. Tray) should be verified. Cross-family migration to newer TrueTouch generations requires re-evaluation of firmware compatibility and pinout configurations.