MCHPAR1100T-I/SS
Overview
The AR1100T-I/SS is a high-performance resistive touch screen controller that simplifies the integration of 4-wire, 5-wire, or 8-wire resistive touch panels. It acts as a bridge, converting analog touch coordinates into digital data transmitted via USB or RS-232/UART interfaces. The device features a built-in drift compensation algorithm to maintain accuracy over time in various environmental conditions.
Why Choose This Part
This controller offers dual-interface flexibility with USB-HID, USB-Digitizer, and RS-232 modes available in a single chip. It includes 96 bytes of user EEPROM for storing configuration data and a power-saving sleep mode that reduces consumption to 10uA. Its industrial temperature rating and integrated calibration algorithms ensure stable performance between -40C and +85C.
Applications
Getting Started
To evaluate the device, use the AR1100 Development Kit which includes a production-ready board and configuration software. Designers can configure the chip's touch response and calibration via the Microchip AR1100 Configuration Utility. For hardware integration, ensure the 20-pin SSOP is decoupled appropriately and the touch screen traces are kept short to minimize noise.
