72 MHz Cortex-M3 with 256 KB Flash — fit for a control-board BOM
The STMicroelectronics STM32F103RCT6TR is a 32-bit ARM Cortex-M3 MCU from the STM32F1 value line, clocked at 72 MHz with 256 KB of Flash and 48 KB of RAM. It packs 51 GPIOs, a motor-control PWM timer, CANbus, USB, and dual 12-bit DACs into a 64-LQFP package. Typical applications include industrial drives, motor-control boards, and embedded control nodes that need a single 2 V to 3.6 V supply and operate from -40 °C to 85 °C.
256 KB Flash and 48 KB RAM — what the memory map buys you
256 KB of Flash and 48 KB of RAM support a moderate application firmware, bootloader, and small file system.
EOL status — sourcing reality for this order code
The STM32F103RCT6TR is recorded as end-of-life (EOL). Factory orders are no longer accepted; supply is through independent-distribution surplus and broker channels.
Peripheral set and deployment context
The motor-control PWM timer, CANbus interface, and dual 12-bit DACs target industrial motor-drive and control applications. The 51 GPIOs in a 64-LQFP give enough headroom for a keypad, a small character display, and a few encoder inputs. The internal oscillator and POR/PVD reduce external BOM count on a two-layer board.