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Product Detailed Parameters
- Description：IC TOUCH SENSOR 11KEY 32TQFP
- Series：QTouch™
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Buttons
- Proximity Detection：No
- Number of Inputs：Up to 11
- LED Driver Channels：Up to 7
- Interface：SPI
- Resolution：-
- Voltage - Supply：3V ~ 5.5V
- Current - Supply：12mA
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：32-TQFP
- Supplier Device Package：32-TQFP (7x7)
- Grade：-
- Qualification：-
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Overview
The AT42QT1110-AUR is a capacitive touch sensor IC from the QTouch series, manufactured by Microchip Technology. It supports up to 11 sensing channels and operates on a 3 V to 5.5 V supply voltage with a typical current consumption of 12 mA. The device utilizes a full-duplex SPI interface for communication and configuration. It is available in a 32-pin TQFP package measuring 7 mm x 7 mm. The component is designed for button-type sensing applications and includes features such as self-calibration and noise filtering.
Feature Summary
- Patented spread-spectrum charge-transfer technology for robust signal processing
- Configurable discrete outputs for individual key status indication
- Integrated EEPROM for persistent device setup storage
- Supports both sequential and parallel key acquisition modes
Applications
- Consumer electronics control panels
- Media player interfaces
- Industrial human-machine interface buttons
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and material specifications. Confirm that the component meets all relevant environmental compliance standards required for the target application before finalizing procurement orders.
Selection Notes
Select this component when an SPI interface is preferred over I2C or discrete GPIO outputs. Ensure the design accommodates the 32-TQFP footprint and provides adequate clearance for the required electrode spacing and panel thickness constraints defined in the datasheet.
Part Context
This part belongs to the AT42QT1110 family of QTouch sensors. It shares core functionality with variants like the AT42QT1110-MU but differs in packaging and commercial availability. The AUR suffix typically denotes tape and reel packaging suitable for automated surface-mount assembly processes.
Replacement Considerations
Direct pin-to-pin replacements within the same family include the AT42QT1110-MU. Verify package compatibility and firmware settings when substituting between different suffixes or closely related models in the QTouch series.
