80 MHz Cortex-M4F with FPU — real-time headroom for mixed-signal control
The TM4C1237D5PZI7R is a 32-bit ARM Cortex-M4F MCU from TI's Tiva C series, clocked at 80 MHz with a single-cycle multiply and hardware FPU.
Memory map and peripheral mix — what fits, what does not
64 KB of program Flash with 2 KB of dedicated EEPROM. The EEPROM is useful for calibration constants and fault logs that survive a firmware update — no separate serial EEPROM needed on the board. The 24 KB SRAM is tight for large frame buffers; if your application uses the USB OTG with isochronous transfers, budget the RAM carefully. On the peripheral side, you get a 22-channel 12-bit ADC, CAN 2.0, USB OTG, and multiple serial interfaces (I²C, SPI, SSI, UART, IrDA, Microwire). The 69 GPIOs in the 100-LQFP package leave room for a parallel LCD or a bank of opto-isolated inputs without needing a port expander.
Industrial temperature and supply range — board-level fit
Rated from -40°C to 85°C. Supply range is 1.08 V to 3.63 V.