General Features
The C8051F85x/86x ports have the following features:
Push-pull or open-drain output modes and analog or digital modes.
Port Match allows the device to recognize a change on a port pin value and wake from idle mode or generate an interrupt.
Internal pull-up resistors can be globally enabled or disabled.
Two external interrupts provide unique interrupt vectors for monitoring time-critical events.
Above-rail tolerance allows 5 V interface when device is powered.