MCHPAT42QT1070-MMHR
Overview
The AT42QT1070 is a 7-channel capacitive touch controller designed for creating reliable touch interfaces with minimal external components. It utilizes Microchip patented spread-spectrum charge-transfer technology to provide high noise immunity and stable operation across a wide voltage range of 1.8V to 5.5V. The IC communicates via a standard I2C interface and features dedicated LED driver pins for immediate visual feedback.
Why Choose This Part
The chip includes Adjacent Key Suppression (AKS) technology, which prevents false triggers by determining which touch button has the strongest signal. Its auto-drift compensation and self-calibration routines ensure consistent sensitivity even as environmental conditions change or debris accumulates on the touch surface.
Applications
Key Specifications
Getting Started
Engineers can evaluate this IC using the AT42QT1070-XPRO Xplained Pro extension board, which connects to Microchip MCU starter kits. Configuration is handled over I2C by writing to internal registers to set sensitivity thresholds and sensor modes. Technical documentation and reference software drivers are available through the Microchip website for rapid integration into AVR or SAM based projects.
AT42QT1070 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Package | Stock |
|---|---|---|
| AT42QT1070-MMHR (this part) | VFQFN-20 | 7,078 |
| AT42QT1070 | SOIC-14 | 66,809 |
