32MHz Cortex-M0+ with 32KB Flash — the low-power workhorse
It carries 32KB of Flash program memory, 8K x 8 of SRAM, and 1K x 8 of EEPROM on-chip — enough for sensor-fusion firmware, communication stacks, and calibration data storage without an external EEPROM. The 32-LQFP package (7x7 mm body) gives 27 I/Os.
Memory budget and peripheral set — what fits on the die
The 32KB Flash and 8K x 8 RAM set the firmware ceiling for this part. The 1K x 8 EEPROM is a genuine hardware EEPROM block, not emulated Flash — it handles frequent parameter writes without wear-leveling overhead.