STM32F103C6T6ATR

STM32F103C6T6 is a low‑to‑mid density MCU from ST’s STM32F1 family. It uses a 32‑bit ARM Cortex‑M3 core and runs up to 72 MHz. It typically has 32 KB flash memory and a few KB of SRAM (often around 6 KB, varies by package). Peripherals include multiple USART/UARTs, I2C, SPI, several timers with PWM, a 12‑bit ADC, DMA, and a system boot ROM with a hardware boot loader. It is powered from 2.0–3.6 V and comes in a 48‑pin LQFP package (T6). Debugging is via SWD/JTAG, and it can be programmed with ST’s tools (CubeMX/HAL/LL libraries) and common IDEs. It’s popular for hobbyist boards (e.g., Blue Pill) and small embedded projects due to low cost, good documentation, and broad community support. For precise specs, consult the datasheet and reference manual (RM0008).

Key features of STM32F103C6T6 (ARM Cortex-M3, 72 MHz class, 48-pin package):
- Core: 32-bit ARM Cortex‑M3 up to 72 MHz
- Memory: 64 KB flash, 20 KB RAM
- Peripherals: 12-bit ADC up to 1 MSps; up to 3 USARTs, 2 SPIs, 2 I2Cs
- Timers: TIM1 (advanced-control), TIM2–TIM4 (general-purpose)
- USB: USB 2.0 Full‑Speed (device) available on selected packages
- DMA/controller and basic CRC/CRC32 hardware (where implemented)
- GPIO: around 37 I/O lines in the LQFP48 package
- Timers/PWM: multiple PWM outputs
- Real‑Time/Watchdog: RTC, independent and window watchdog
- Power modes: Run, Sleep, Stop, Standby
- Voltage & Temp: 2.0–3.6 V operating; industrial temp range (-40 to 85°C) or extended variants
- Debug/Trace: SWD/JTAG debug interface
Note: exact features (USB availability, memory size) depend on package/variant; verify in datasheet for your part.

- Pin count: 48-pin (LQFP-48, package code T6).
- Function: 32‑bit ARM Cortex‑M3 microcontroller (STM32F103C6) used as a general-purpose MCU with embedded flash/RAM and peripherals (GPIO, ADC, timers, USART, SPI, I2C; USB FS on some variants).

Manufacturer: STMicroelectronics (STMicroelectronics N.V.).
What kind of company: A multinational semiconductor and electronics company that designs, manufactures, and markets a wide range of ICs and components, including microcontrollers (like STM32), sensors, and power devices. It is one of the world's largest semiconductor producers with a global footprint.

STM32F103C6T6ATR is a Cortex-M3 MCU (64 KB Flash, ~20 KB RAM) with timers, ADC, PWM, and serial interfaces (USART/UART, SPI, I2C; USB/CAN on some variants). Common application areas:
- Industrial automation and machine control
- Motor control and drive systems
- Data acquisition and instrumentation
- Consumer electronics and home automation
- IoT edge devices and gateways
- USB/serial peripheral interfaces
- Robotics and hobby/prototyping
- Automotive body electronics (non-safety-critical)

LQFP-48 (48-pin plastic quad flat package), typically 7×7 mm with 0.5 mm pitch.