27.1 Overview
The External Interrupt Controller (EIC) allows external pins to be configured as interrupt lines. Each interrupt line can be individually masked and can generate an interrupt on rising, falling, both edges or on high or low levels. Each external pin has a configurable filter to remove spikes. Also, each external pin can be configured to be asynchronous to wake-up the device from Sleep modes where all clocks were disabled. External pins can generate an event.
A separate Non-Maskable Interrupt (NMI) is also supported. It has properties similar to the other external interrupts but is connected to the NMI request of the NVIC.