80 MHz Cortex-M4F with FPU — what it means for the control loop
The TM4C123BH6PMI7 is a Texas Instruments Tiva C Series microcontroller built around an ARM Cortex-M4F core clocked at 80 MHz. The floating-point unit on the M4F handles single-precision math in hardware, so a PID loop or sensor-fusion algorithm runs without software emulation overhead. With 256 KB of Flash program memory and 32K x 8 of SRAM, this MCU fits motor-control, human-machine interface, and industrial-communication gateway designs where the CANbus, I²C, SPI, and UART peripherals are already on-chip.
Industrial temperature range and supply flexibility
Rated for -40°C to 85°C ambient. Supply range is 1.08 V to 3.63 V.
On-chip peripherals and I/O
43 general-purpose I/O lines are available in the 64-LQFP package. The peripheral set includes a 12-channel 12-bit ADC, CAN 2.0, multiple UART/USART, I²C, SPI/SSI, and a quadrature encoder interface (QEI) for motor position feedback. Brown-out detect, POR, and a watchdog timer are built in, reducing external supervisor IC count.
Package and footprint
Housed in a 64-lead LQFP with a 10x10 mm body.