What this MCU is and where it fits
The STMicroelectronics STM32F101C6T6 is a 32-bit ARM Cortex-M3 microcontroller clocked at 36 MHz with 32 KB of Flash and 6 KB of SRAM. The 48-LQFP package (7x7 mm) and 37 I/O suit compact PCBs.
Memory sizing — 32 KB Flash, 6 KB RAM
32 KB of Flash fits a modest firmware image: bootloader, peripheral drivers, and a control loop. 6 KB of SRAM limits runtime data buffers — expect to manage DMA descriptors and stack usage carefully. If your application needs over-the-air updates or data logging beyond a few kilobytes, this part will feel tight.
Lifecycle and sourcing reality
This part is marked obsolete by STMicroelectronics. No last-time-buy window remains. Sourcing is through independent distribution. We can quote it to order against an RFQ.
Temperature grade and environment
Rated -40°C to 85°C, this MCU is suited for industrial enclosures, outdoor telecom cabinets, and engine-bay-adjacent electronics. The internal oscillator and POR/PVD blocks reduce external component count in harsh environments where a crystal might be a failure point.