512 KB Flash, 72 MHz Cortex-M3 — industrial workhorse
It packs 112 I/O lines, a full set of peripherals including DMA, motor-control PWM, multiple ADCs/DACs, and CAN/USB/SPI/I²C interfaces.
At 72 MHz the Cortex-M3 delivers about 1.25 DMIPS/MHz, enough for real-time control loops and moderate protocol stacks. The 512 KB Flash needs zero wait states up to 24 MHz; above that the flash controller inserts one wait state per the clock tree setup. If you're porting code from a lower-speed part, budget for the flash latency adjustment in the startup routine or the first branch will hard-fault.
112 I/O and peripheral mix — what connects where
With 112 I/O in a 144-LQFP package, this part handles parallel LCD buses, multiple UARTs, and CAN nodes without external GPIO expanders. The peripheral set includes two 12-bit ADCs (21 channels), two 12-bit DACs, motor-control PWM timers, and a USB 2.0 full-speed device. The 64 KB SRAM is adequate for a small RTOS heap and double-buffered ADC data; if you need larger frame buffers, consider the STM32F105/107 series with 64 KB SRAM plus external memory interface.
For production planning this means standard lead times through distribution and no forced redesign horizon. The part is ROHS3 compliant.