25 MHz ARM Cortex-M3 with 16 KB Flash — what the memory budget means
The 16 KB Flash (16K x 8) and 4 KB SRAM (4K x 8) define the firmware and data buffer ceiling — this part fits control loops, sensor fusion, or simple protocol bridges where the code image stays under about 14 KB after bootloader overhead. The 25 MHz core delivers adequate throughput for UART/SPI/SSI communication at typical baud rates and for PWM generation with the on-chip peripheral set.
48-LQFP package — footprint and reflow considerations
Housed in a 48-LQFP with a 7x7 mm body (0.5 mm pitch), the LM3S315-IQN25-C2T is a standard surface-mount package. The 32 I/O lines are accessible on the perimeter leads. The package is compatible with standard lead-free reflow profiles.