Tiva C Series — 120 MHz Cortex-M4F with integrated Ethernet
It carries 1 MB of Flash and 256K x 8 of SRAM, plus 6K x 8 EEPROM for parameter storage — enough firmware and data space for a connected control node without external memory. The 10x10 mm package and 140 I/O support EBI/EMI, multiple UART/SPI/I²C ports, and a 24-channel 12-bit ADC.
120 MHz Cortex-M4F — what the speed means for your control loop
At 120 MHz with a single-cycle MAC and hardware divide, the Cortex-M4F can close a current-control loop or run a sensor-fusion algorithm in the tens of microseconds. The FPU handles floating-point math without software emulation — useful for PID tuning or motor-angle calculations without burning cycles on fixed-point scaling.