Integrated ESD Protection
±8kV Contact Discharge
±15kV Air-Gap Discharge
+14V Tolerant, Open-Drain I/O Ports Capable of Constant-Current LED Drive
Rotary Switch-Capable Input Pair (PORT6, PORT7)
256-Step PWM Individual LED Intensity Control
Individual LED Blink Rates and Common LED Fade In/Out Rates from 256ms to 4096ms
FIFO Queues Up to 16 Debounced Key Events
User-Configurable Key Debounce (9ms to 40ms)
Keyscan Uses Static Matrix Monitoring for Low EMI Operation
+1.62V to +3.6V Operation
Monitors Up to 64 Keys
Key-Switch Interrupt (Active-Low INTK) on Each Debounced Event/FIFO Level, or End of Definable Time Period
Port Interrupt (Active-Low INTI) for Input Ports for Special-Key Functions
400kbps, +5.5V Tolerant 2-Wire Serial Interface with Selectable Bus Timeout
Four I²C Address Choices
Applications
Cell Phones
Handheld Games
Instrumentation
PDAs
Portable Consumer Electronics
Printers
