ATMXT288UD-AMTRSPIVA1

Overview

The ATMXT288UD-AMTRSPIVA1 is a maXTouch touchscreen controller from Microchip Technology, designed for automotive applications. It features an SPI interface with a maximum clock rate of 8 MHz and operates within a temperature range of -40°C to +85°C (Grade 3). The device supports up to 288 nodes across 12 X and 24 Y lines, enabling multi-touch tracking for up to 10 concurrent touches. It utilizes a charge-transfer acquisition engine for mutual and self-capacitance measurements, providing robust touch detection in noisy environments. The component is housed in a 56-pin VQFN package.

Feature Summary

• Supports up to 288 nodes with 12 transmit and 24 receive lines for high-resolution sensing
• Tracks up to 10 concurrent touches with typical report rates exceeding 70 Hz
• Includes moisture compensation and noise suppression for reliable operation in harsh conditions
• Features on-chip gesture reporting for one-touch and two-touch inputs

Applications

• Automotive infotainment systems requiring AEC-Q100 qualified components
• Multi-touch displays supporting glass or PET film sensors
• Applications utilizing TFT, LCD, or OLED display technologies
• Systems requiring synchronized display refresh timing capabilities

Procurement Notes

Verify the 'R' suffix indicates tape and reel packaging rather than standard tray supply. Confirm that the AMT designation corresponds to the Grade 3 operating temperature range (-40°C to +85°C). Ensure compatibility with SPI slave communication protocols up to 8 MHz before procurement.

Selection Notes

Select this model when SPI connectivity is required instead of I2C. Choose the AMT variant for Grade 3 automotive temperature specifications. Consider the 288-node capacity for screens up to approximately 6.34 inches depending on electrode pitch. Verify that the system design accommodates the 56-pin VQFN footprint and associated thermal requirements.

Part Context

This part belongs to the mXT288UD-AMT/mXT288UD-AMB family. It shares core sensing technology with the I2C variants but differs in its communication interface. The 'R' suffix specifically denotes tape and reel packaging, distinguishing it from tray-packaged counterparts like the ATMXT288UD-AMTSPIVAO.

Replacement Considerations

ATMXT288UD-AMTSPIVAO serves as the tray-packaged equivalent within the same electrical specification family.