72 MHz Cortex-M4 with HRTIM — the digital-power workhorse
It carries 64 KB of Flash and 12 KB of SRAM in a 32-LQFP package with 25 available I/O lines.
64 KB of program memory and 12 KB of SRAM place this part in the mid-density tier of the STM32F334 family. That is enough headroom for a sensorless FOC algorithm with a CAN stack and a few kilobytes of data buffers, but tight for a full GUI or over-the-air update staging area. The 12 KB RAM is organised as 12K x 8 bits — enough for two 200-point FFT arrays if you manage the heap carefully.
The 105°C ceiling is the industrial-plus grade — one step above the standard 85°C, so you can skip active cooling in many convection-cooled designs.
The base product number STM32F334 is a current-production line, so the BOM line can be committed without obsolescence risk for new designs.
Peripherals: CAN, HRTIM, and 12-bit converters
The 9-channel 12-bit ADC and 3-channel 12-bit DAC support simultaneous current and voltage sensing without external converters. The HRTIM (high-resolution timer) peripheral, though not listed in the summary, is a hallmark of the F334 family for generating complementary PWM with dead-time insertion.