The maximum operating temperature range for the LPC11A14FHN33/301 is -40°C to +85°C.
The internal oscillator on the LPC11A14FHN33/301 can be configured using the SYSCON registers. Specifically, the SYSOSCCTRL register is used to select the oscillator frequency, and the SYSOSCSTAT register is used to monitor the oscillator status.
No, the LPC11A14FHN33/301 is a 3.3V device and should not be operated with a 5V power supply. Exceeding the maximum recommended operating voltage can damage the device.
To enable the UART on the LPC11A14FHN33/301, you need to configure the PINSEL registers to select the UART function for the desired pins, and then enable the UART by setting the UARTn_EN bit in the UARTn_CTRL register.
The maximum clock frequency for the LPC11A14FHN33/301 is 50 MHz.