The maximum clock frequency of the TM4C123BH6ZRBIR is 80 MHz, but it can be overclocked to 120 MHz with some limitations.
The pin muxing on the TM4C123BH6ZRBIR can be configured using the Pin Mux Utility tool provided by Texas Instruments, or by writing code to configure the registers manually.
The main difference between the TM4C123BH6ZRBIR and the TM4C123GH6ZRBIR is that the GH version has a larger flash memory (1MB vs 256KB) and more RAM (256KB vs 32KB).
Yes, the TM4C123BH6ZRBIR can be used with operating systems like Linux or FreeRTOS, but it requires porting the OS to the specific microcontroller and configuring the necessary drivers and peripherals.
The TM4C123BH6ZRBIR can be debugged and programmed using the IAR Embedded Workbench, Keil µVision, or the Texas Instruments Code Composer Studio (CCS) integrated development environment (IDE).