CYTMA545-48LQI36ZZAT

Overview

The CYTMA545-48LQI36ZZAT is a TrueTouch multi-touch capacitive touchscreen controller featuring a 32-bit ARM Cortex CPU. It supports up to 36 sense pins and reports up to 10 fingers with a refresh rate of 300 Hz. The device operates on a 1.71-V to 5.5-V digital supply and a 2.65-V to 5.5-V analog supply, consuming 5.6 mW average power. It includes advanced features such as DualSense water rejection, glove tracking, stylus support, hover sensing, and face detection. Communication is handled via I2C or SPI interfaces.

Feature Summary

• Advanced touch capabilities including DualSense water rejection, passive stylus support, and hover finger sensing
• Supports up to 36 sense pins for screens up to 5.0 inches diagonal with 300 Hz refresh rates
• Integrated ChargerArmor technology providing immunity up to 60 VPP charger noise
• Flexible communication options with I2C (up to 3.4 Mbps) and SPI (up to 10 Mbps)

Applications

• Smartphones and mobile devices requiring high-performance touch input
• Tablets and portable electronics supporting multi-touch gestures
• Industrial control panels needing reliable operation in wet conditions

Procurement Notes

Verify the ordering suffix ZZ indicates custom development configuration. Confirm package type matches the 48-pin QFN specification. Ensure compatibility with required sensor stackups and display synchronization needs before procurement.

Selection Notes

Select this model for applications requiring full feature sets including stylus, hover, and face detection. Compare against base models if only standard multi-touch is needed. Verify pin count requirements align with the 36-sense pin capability.

Part Context

Part of the Cypress TrueTouch family, now under Infineon Technologies. Designed for high-end touch applications requiring robust environmental immunity and advanced gesture recognition capabilities.

Replacement Considerations

Check for updated part numbers from Infineon. Verify functional equivalence regarding interface speeds and power consumption when substituting.