Supply voltage and interface — host-side integration
The ATMXT224-CCU: Communication is over an I²C bus, which uses only two wires (SCL, SDA) and supports multi-drop configurations; the host-side pin allocation is minimal, but the bus speed and pull-up resistor values must be sized for the total capacitive load on the line.
Touch resolution and sensing architecture
The 12-bit resolution provides 4096 counts per axis — sufficient for finger-touch gesture recognition and basic stylus tracking in consumer and industrial HMI panels. The controller uses 2-wire capacitive mutual-capacitance sensing across 224 nodes, which supports multi-touch and glove-touch operation when the sensor stack-up and overlay thickness are within the tuning range.
Package, footprint, and temperature grade
Housed in a 49-ball UFBGA (5x5 mm body) — the 0.50 mm ball pitch requires a controlled-impedance PCB stack-up with micro-vias or blind vias for fan-out; the exposed center pad (if present) should be connected to the PCB ground plane with thermal vias for heat spreading. Supplied in Bulk (tray) format — the delivery medium is suitable for medium-volume production; for high-volume tape-and-reel, confirm the packing option with the supplier at RFQ.