STM32F401CCU6

STM32F401CCU6 is the STMicroelectronics STM32F401CC microcontroller in UFQFPN-48 (7 x 7 x 0.55 mm, tray packing) — Arm Cortex-M4 at up to 84 MHz with 256 Kbytes of Flash and 64 Kbytes of SRAM, powered from 1.7 V to 3.6 V, listed Active with a 10-year longevity commitment on st.com. The U6 suffix is the -40 to +85 °C grade, run current is 128 µA/MHz with peripherals off, and the device has 48 pins — not the 44 or 40 pins of common development boards. Selection advice: do not confuse the xB/xC line with the xD/xE line — the LQFP-64 STM32F401RET6 belongs to the xD/xE datasheet (DS10086) with 512 Kbytes of Flash and a different memory map, so it is not a drop-in code swap for this part; this CC part follows the STM32F401xB/xC datasheet.