The AT42QT1011-TSHR is a product from Atmel, which is now part of Microchip Technology after the acquisition. It is a Capacitive Touch sensor IC, commonly used in touch-based user interface s for various applications, such as home appliances, automotive, and consumer electronics.
Regarding your request for detailed information:
Package Type: The AT42QT1011-TSHR comes in a 16-pin TSSOP (Thin Shrink Small Outline Package). This is a small, surface-mount package commonly used for ICs with a relatively low number of pins.
Pin Function Specifications: Since you have requested a detailed explanation of each pin, let's break down the pinout. I will provide all the pin functions for the 16 pins of the AT42QT1011 IC.
Pin Function List (16 pins): Here's a table describing the pinout and function of each pin.
Pin Number Pin Name Pin Function Description 1 VDD Power Supply (3.3V to 5.5V) - Provides the main operating voltage for the IC. 2 VSS Ground Pin - Common ground reference for the device. 3 TOUCH0 Capacitive Touch Input 0 - Used for the first touch sensor input. 4 TOUCH1 Capacitive Touch Input 1 - Used for the second touch sensor input. 5 TOUCH2 Capacitive Touch Input 2 - Used for the third touch sensor input. 6 TOUCH3 Capacitive Touch Input 3 - Used for the fourth touch sensor input. 7 TOUCH4 Capacitive Touch Input 4 - Used for the fifth touch sensor input. 8 TOUCH5 Capacitive Touch Input 5 - Used for the sixth touch sensor input. 9 SLPS Sleep Pin - If high, puts the IC into a low-power sleep mode. 10 INT Interrupt Pin - Output for interrupt signal when a touch event occurs. 11 RST Reset Pin - Active low, used to reset the IC. 12 CS Chip Select - Used in communication with other components, active low. 13 SCK Serial Clock - Used for serial communication. 14 MISO Master In Slave Out - Data input to the device from a master in SPI communication. 15 MOSI Master Out Slave In - Data output from the device in SPI communication. 16 N/C No Connection - This pin is not connected internally, it is reserved for flexibility in the PCB design. Pin Function FAQ:Here are 20 frequently asked questions (FAQ) regarding the AT42QT1011-TSHR:
Q: What is the power supply voltage for the AT42QT1011-TSHR? A: The AT42QT1011-TSHR requires a supply voltage between 3.3V and 5.5V, connected to the VDD pin.
Q: What is the purpose of the VSS pin on the AT42QT1011-TSHR? A: The VSS pin is the ground pin for the device, providing the reference ground for all signals.
Q: How many capacitive touch inputs are available on the AT42QT1011-TSHR? A: The AT42QT1011-TSHR provides 6 capacitive touch inputs, labeled TOUCH0 to TOUCH5.
Q: How does the AT42QT1011-TSHR go into low-power mode? A: The AT42QT1011-TSHR enters sleep mode when the SLPS pin is driven high.
Q: How can the AT42QT1011-TSHR signal touch events? A: The IC signals touch events through the INT pin, which sends an interrupt signal when a touch is detected.
Q: What is the function of the RST pin on the AT42QT1011-TSHR? A: The RST pin is used to reset the IC, and it is active low.
Q: Can the AT42QT1011-TSHR communicate with other devices using SPI? A: Yes, the AT42QT1011-TSHR supports SPI communication through pins CS, SCK, MISO, and MOSI.
Q: What is the function of the CS pin on the AT42QT1011-TSHR? A: The CS pin is the Chip Select pin, used to enable or disable the SPI communication, active low.
Q: What does the INT pin do in the AT42QT1011-TSHR? A: The INT pin generates an interrupt signal when a touch is detected on any of the capacitive touch inputs.
Q: Is the AT42QT1011-TSHR compatible with both 3.3V and 5V systems? A: Yes, the AT42QT1011-TSHR can operate with a supply voltage between 3.3V and 5.5V, making it compatible with both systems.
Q: What is the significance of the "N/C" pin on the AT42QT1011-TSHR? A: The "N/C" pin stands for No Connection, meaning it does not have an internal connection and is used for flexibility in the PCB design.
Q: How do I reset the AT42QT1011-TSHR IC? A: To reset the IC, you need to pull the RST pin low for a short duration.
Q: How many touch inputs does the AT42QT1011 support? A: The AT42QT1011 supports up to 6 capacitive touch inputs, labeled TOUCH0 through TOUCH5.
Q: Can I use the AT42QT1011-TSHR in a project with a microcontroller? A: Yes, the AT42QT1011-TSHR can be easily integrated with microcontrollers via SPI or other communication protocols.
Q: What is the maximum voltage that can be applied to the VDD pin? A: The maximum voltage that can be applied to the VDD pin is 5.5V.
Q: How can I detect a touch event using the AT42QT1011-TSHR? A: You can detect a touch event by monitoring the INT pin for an interrupt signal.
Q: Is there a way to disable certain touch inputs on the AT42QT1011-TSHR? A: Yes, the AT42QT1011 allows you to configure which touch inputs are active through its internal registers.
Q: What is the purpose of the MISO and MOSI pins in the AT42QT1011-TSHR? A: MISO (Master In Slave Out) is used for data input from a master in SPI communication, while MOSI (Master Out Slave In) is used for data output from the slave.
Q: Can I use the AT42QT1011-TSHR with a microcontroller that doesn't support SPI? A: No, the AT42QT1011-TSHR is designed for communication via SPI. You would need a microcontroller that supports SPI for full functionality.
Q: How do I wake up the AT42QT1011-TSHR from sleep mode? A: To wake up the AT42QT1011-TSHR from sleep mode, you need to drive the SLPS pin low.
I hope this detailed information helps you with your work on the AT42QT1011-TSHR. Let me know if you need further details!
