The maximum clock frequency of the TM4C1230E6PMI7R is 80 MHz, but it can be overclocked to 120 MHz with some limitations.
The pin muxing on the TM4C1230E6PMI7R can be configured using the PinMux utility in the TI Resource Explorer or by modifying the GPIO registers directly in the code.
The main difference between the TM4C1230E6PMI7R and the TM4C1230H6PMI7R is the package type. The TM4C1230E6PMI7R is in a QFN package, while the TM4C1230H6PMI7R is in a BGA package.
Yes, the TM4C1230E6PMI7R can be used with an external crystal oscillator. The device has an internal oscillator, but an external crystal oscillator can be used for more accurate clocking.
The TM4C1230E6PMI7R can be programmed using the TI Code Composer Studio (CCS) or the Keil µVision IDE. The device can also be programmed using the In-Circuit Debug Interface (ICDI) or the Serial Wire Debug (SWD) interface.