80 MHz Cortex-M4F — what the core speed buys you
Memory sizing: 64 KB Flash, 24 KB RAM, 2 KB EEPROM
64 KB of Flash is the mid-density option in the TM4C1233 line — enough for a CANopen stack plus a modest application layer, but tight if you are also hosting a USB device class driver. The 24 KB SRAM leaves headroom for a few large buffers; if your data path exceeds that, you will need to page through Flash or use the DMA to shift data directly. The 2 KB EEPROM is useful for calibration constants and fault logs that survive a firmware update, since it is separate from the Flash block.
The TM4C1233D5PZIR carries an EOL hot lifecycle stage, meaning the last-time-buy window is active or closing. Texas Instruments lists the product status as Active, but the EOL hot flag signals that production is winding down. For new designs, consider a pin-compatible upgrade with more memory in the same 100-LQFP footprint.
Housed in a 100-LQFP (14x14 mm) with 69 I/O, this surface-mount MCU operates from -40°C to 85°C and a supply range of 1.08 V to 3.63 V.