CYTMA525-48BUI25ZZT

Overview

The CYTMA525-48BUI25ZZT is a TrueTouch multi-touch capacitive touchscreen controller manufactured by Cypress Semiconductor. It integrates a 32-bit ARM Cortex CPU and supports up to 25 sense pins with a maximum of four simultaneous touch points. The device operates on a 1.71V to 5.5V digital supply and features I2C and SPI communication interfaces. Key capabilities include ChargerArmor noise immunity, DualSense water rejection, hover tracking, and passive stylus support.

Feature Summary

• ChargerArmor technology providing immunity to charger noise up to 60-V peak-to-peak
• DualSense technology enabling wet-finger tracking and water rejection
• Support for passive stylus input and hover finger tracking
• Integrated 32-bit ARM Cortex CPU with register configurability

Applications

• Smartphones and mobile devices
• Tablets and portable computing devices
• Industrial control panels requiring glove or wet-hand operation

Procurement Notes

Verify the specific ordering suffix ZZT against current manufacturer documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with the host system's I/O voltage levels (1.71V to 5.5V) and interface requirements (I2C or SPI). Confirm that the 48-ball UFBGA package dimensions align with the PCB layout constraints.

Selection Notes

Select this component for applications requiring robust noise immunity in high-interference environments due to its ChargerArmor feature. It is suitable for designs needing advanced gesture recognition such as hover and passive stylus support. Verify that the required screen size does not exceed 3.0 inches diagonal or that the electrode pitch matches the sensor design.

Part Context

This part belongs to the Cypress TrueTouch family of multi-touch all-points controllers. It is designed to replace older resistive or single-point capacitive solutions with advanced multi-touch processing. The device is often paired with specific sensor stackups including glass, PET, or on-cell integrated displays.

Replacement Considerations

Direct replacements may include other Cypress TrueTouch models like the CYTMA525-49FNI25ZZT, though pin counts and packages differ. Cross-family migration requires re-evaluation of firmware drivers and hardware interface configurations.

FAQ

What is the maximum number of simultaneous touch points supported?

The CYTMA525-48BUI25ZZT supports reporting up to four fingers simultaneously.

Does the device support passive stylus input?

Yes, the datasheet confirms support for passive stylus input.

What is the typical deep-sleep power consumption?

The typical deep-sleep power consumption is 4.5 μW.