CYTMA448-70BUI58AET

Overview

The CYTMA448-70BUI58AET is a TrueTouch Multi-Touch All-Points Touchscreen Controller manufactured by Cypress Semiconductor. It features a 32-bit ARM Cortex CPU and supports up to 58 sense pins with 777 intersections for screens up to 7.9 inches. The device provides multi-touch glove tracking, water rejection via DualSense technology, and robust charger noise immunity using ChargerArmor. It operates on a 1.71-V to 5.5-V digital supply and includes I2C and SPI communication interfaces in a 70-ball BGA package.

Feature Summary

• Multi-touch capacitive touchscreen controller with up to 10 simultaneous fingers
• Integrated ChargerArmor technology for high charger noise immunity
• DualSense technology for water rejection and wet-finger tracking
• Supports thin (≤1 mm) and thick (≤5 mm) glove operation

Applications

• Smartphones and mobile devices requiring all-points touch
• Tablets and portable media players
• Industrial HMI panels with glove or wet-hand operation needs
• Automotive infotainment systems

Procurement Notes

Verify the manufacturer origin as Cypress Semiconductor Corporation. Confirm the specific suffix '58AET' indicates the 58-sense pin variant with Tape and Reel packaging. Ensure compatibility with Android drivers and check for any obsolescence notices from Infineon Technologies following their acquisition of Cypress.

Selection Notes

Select this model for applications requiring large object rejection and automatic baseline tracking. The 70-ball BGA package suits compact designs. Verify that the system power supply meets the 1.71-V to 5.5-V digital range. Consider the 8.5-mW average power consumption for battery-operated devices.

Part Context

This component belongs to the CYTMA448 TrueTouch family, designed for high-performance capacitive touch sensing. It integrates advanced noise suppression and environmental adaptation features. The part number structure identifies it as a Cypress product with industrial temperature rating and specific sense pin configuration.

Replacement Considerations

Check for direct replacements within the CYTMA448 series such as CYTMA448-70BUI58AE without the tape/reel suffix if bulk packaging is acceptable. Verify pin-to-pin compatibility and software driver support before substituting.