STM32C552VET6

STM32C552VET6 is a mainstream 32-bit microcontroller from STMicroelectronics in an LQFP-100 package, built on an Arm Cortex-M33 core with FPU and DSP instructions at 144 MHz, with 512 KB of dual-bank Flash, 128 KB of SRAM, an I3C port and USB 2.0 full-speed on a 2.7 to 3.6 V supply. The 100-pin package exposes the family's full I/O set, and the FDCAN controller makes this the connectivity flagship of the STM32C5 line: CAN FD networking plus the maximum GPIO count in one code, for industrial gateways, HMI controllers and equipment that wire many peripherals to a single MCU. Dual-bank Flash supports firmware update without downtime, which matters in installed equipment that cannot pause for servicing. Selection advice: pick the VET6 when the design needs both maximum I/O and FDCAN; if CAN FD is not required, the STM32C551VET6 offers the same package and memory platform without it, and smaller boards are served by the 48-pin CE codes. Note the 2.7 V supply floor before designing in. ST announced the series entering production in March 2026 and the eStore lists this code as Active. Parameters verified against STMicroelectronics documentation.