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STM32F103C6T6ATR
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
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STM32F103C6T6ATR
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)
STM32F103C6T6ATR from STMicroelectronics, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VBAT | power_in | Battery supply pin, operating voltage range 2.0 to 3.6 V for RTC and backup register supply. |
| 2 | PC13 | bidirectional | Port C bit 13 with TAMPER-RTC alternate function; output limited to 2 MHz with 30 pF load maximum, cannot source current (footnote 5). |
| 3 | PC14 | bidirectional | Port C bit 14, 32 kHz oscillator input main function; output speed limited to 2 MHz with 30 pF load maximum (footnote 5). |
| 4 | PC15 | bidirectional | Port C bit 15, 32 kHz oscillator output main function; output speed limited to 2 MHz with 30 pF load maximum (footnote 5). |
| 5 | OSC_IN | input | Main oscillator input for 4 to 16 MHz external crystal; remappable to PD0 GPIO (footnote 7). |
| 6 | OSC_OUT | output | Main oscillator output for external crystal resonator feedback; remappable to PD1 GPIO (footnote 7). |
| 7 | NRST | input | Active-low reset input pin, accepts voltages from 0 V to VDD with internal pull-up. |
| 8 | VSSA | power_in | Analog ground reference pin for ADC supply. |
| 9 | VDDA | power_in | Analog supply voltage pin, operating range 2.0 to 3.6 V for ADC and temperature sensor. |
| 10 | PA0 | bidirectional | Port A bit 0 / wakeup pin; supports ADC12_IN0, USART2_CTS, TIM2_CH1_ETR alternate functions. |
| 11 | PA1 | bidirectional | Port A bit 1; supports ADC12_IN1, USART2_RTS, TIM2_CH2 alternate functions. |
| 12 | PA2 | bidirectional | Port A bit 2; supports ADC12_IN2, USART2_TX, TIM2_CH3 alternate functions. |
| 13 | PA3 | bidirectional | Port A bit 3; supports ADC12_IN3, USART2_RX, TIM2_CH4 alternate functions. |
| 14 | PA4 | bidirectional | Port A bit 4; supports ADC12_IN4, SPI1_NSS, USART2_CK alternate functions. |
| 15 | PA5 | bidirectional | Port A bit 5; supports ADC12_IN5, SPI1_SCK alternate functions. |
| 16 | PA6 | bidirectional | Port A bit 6; supports ADC12_IN6, SPI1_MISO, TIM3_CH1 functions; remappable to TIM1_BKIN (footnote 9). |
| 17 | PA7 | bidirectional | Port A bit 7; supports ADC12_IN7, SPI1_MOSI, TIM3_CH2 functions; remappable to TIM1_CH1N (footnote 9). |
| 18 | PB0 | bidirectional | Port B bit 0; supports ADC12_IN8, TIM3_CH3 functions; remappable to TIM1_CH2N (footnote 9). |
| 19 | PB1 | bidirectional | Port B bit 1; supports ADC12_IN9, TIM3_CH4 functions; remappable to TIM1_CH3N (footnote 9). |
| 20 | PB2 | bidirectional | Port B bit 2 / BOOT1 boot select pin; 5 V tolerant I/O. |
| 21 | PB10 | bidirectional | Port B bit 10, 5 V tolerant; remappable to TIM2_CH3 alternate function. |
| 22 | PB11 | bidirectional | Port B bit 11, 5 V tolerant; remappable to TIM2_CH4 alternate function. |
| 23 | VSS_1 | power_in | Ground reference pin for digital supply. |
| 24 | VDD_1 | power_in | Digital supply voltage pin, operating range 2.0 to 3.6 V. |
| 25 | PB12 | bidirectional | Port B bit 12, 5 V tolerant; supports TIM1_BKIN alternate function. |
| 26 | PB13 | bidirectional | Port B bit 13, 5 V tolerant; supports TIM1_CH1N alternate function. |
| 27 | PB14 | bidirectional | Port B bit 14, 5 V tolerant; supports TIM1_CH2N alternate function. |
| 28 | PB15 | bidirectional | Port B bit 15, 5 V tolerant; supports TIM1_CH3N alternate function. |
| 29 | PA8 | bidirectional | Port A bit 8, 5 V tolerant; supports USART1_CK, TIM1_CH1, MCO (master clock output) functions. |
| 30 | PA9 | bidirectional | Port A bit 9, 5 V tolerant; supports USART1_TX, TIM1_CH2 alternate functions. |
| 31 | PA10 | bidirectional | Port A bit 10, 5 V tolerant; supports USART1_RX, TIM1_CH3 alternate functions. |
| 32 | PA11 | bidirectional | Port A bit 11, 5 V tolerant; supports USART1_CTS, CAN_RX, TIM1_CH4, USBDM (USB D minus) alternate functions. |
| 33 | PA12 | bidirectional | Port A bit 12, 5 V tolerant; supports USART1_RTS, CAN_TX, TIM1_ETR, USBDP (USB D plus) alternate functions. |
| 34 | PA13 | bidirectional | Port A bit 13 / JTMS-SWDIO, 5 V tolerant; JTAG test mode select or SWD data I/O debug interface pin. |
| 35 | VSS_2 | power_in | Ground reference pin for digital supply. |
| 36 | VDD_2 | power_in | Digital supply voltage pin, operating range 2.0 to 3.6 V. |
| 37 | PA14 | bidirectional | Port A bit 14 / JTCK-SWCLK, 5 V tolerant; JTAG test clock or SWD clock debug interface pin. |
| 38 | PA15 | bidirectional | Port A bit 15 / JTDI, 5 V tolerant; JTAG test data input debug interface; remappable to TIM2_CH1_ETR, SPI1_NSS (footnote 9). |
| 39 | PB3 | bidirectional | Port B bit 3 / JTDO, 5 V tolerant; JTAG test data output debug interface; remappable to TIM2_CH2, TRACESWO (footnote 9). |
| 40 | PB4 | bidirectional | Port B bit 4 / NJTRST, 5 V tolerant; JTAG test reset debug interface; remappable to TIM3_CH1, SPI1_MISO (footnote 9). |
| 41 | PB5 | bidirectional | Port B bit 5; supports I2C1_SMBA alternate function; remappable to TIM3_CH2, SPI1_MOSI (footnote 9). |
| 42 | PB6 | bidirectional | Port B bit 6, 5 V tolerant; I2C1_SCL main function; supports USART1_TX alternate function. |
| 43 | PB7 | bidirectional | Port B bit 7, 5 V tolerant; I2C1_SDA main function; supports USART1_RX alternate function. |
| 44 | BOOT0 | input | Boot mode selection input pin; sampled at reset to select boot from Flash memory (low) or system bootloader (high). |
| 45 | PB8 | bidirectional | Port B bit 8, 5 V tolerant; remappable to I2C1_SCL, CAN_RX alternate functions. |
| 46 | PB9 | bidirectional | Port B bit 9, 5 V tolerant; remappable to I2C1_SDA, CAN_TX alternate functions. |
| 47 | VSS_3 | power_in | Ground reference pin for digital supply. |
| 48 | VDD_3 | power_in | Digital supply voltage pin, operating range 2.0 to 3.6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |
CAD (KiCad official)
- Symbol:
STM32F103C6T6ATR - Footprint:
Package_QFP:LQFP-48_7x7mm_P0.5mm - 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32f103c6t6atr-etched.step/stm32f103c6t6atr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32f103c6t6atr.step/stm32f103c6t6atr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (99 pp, sha256
31ab1fe3de6e6cf3, retrieved 2026-10-03, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# STM32F103C6T6ATR
**STMicroelectronics** · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)
STM32F103C6T6ATR from STMicroelectronics, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VBAT | power_in | Battery supply pin, operating voltage range 2.0 to 3.6 V for RTC and backup register supply. |
| 2 | PC13 | bidirectional | Port C bit 13 with TAMPER-RTC alternate function; output limited to 2 MHz with 30 pF load maximum, cannot source current (footnote 5). |
| 3 | PC14 | bidirectional | Port C bit 14, 32 kHz oscillator input main function; output speed limited to 2 MHz with 30 pF load maximum (footnote 5). |
| 4 | PC15 | bidirectional | Port C bit 15, 32 kHz oscillator output main function; output speed limited to 2 MHz with 30 pF load maximum (footnote 5). |
| 5 | OSC_IN | input | Main oscillator input for 4 to 16 MHz external crystal; remappable to PD0 GPIO (footnote 7). |
| 6 | OSC_OUT | output | Main oscillator output for external crystal resonator feedback; remappable to PD1 GPIO (footnote 7). |
| 7 | NRST | input | Active-low reset input pin, accepts voltages from 0 V to VDD with internal pull-up. |
| 8 | VSSA | power_in | Analog ground reference pin for ADC supply. |
| 9 | VDDA | power_in | Analog supply voltage pin, operating range 2.0 to 3.6 V for ADC and temperature sensor. |
| 10 | PA0 | bidirectional | Port A bit 0 / wakeup pin; supports ADC12_IN0, USART2_CTS, TIM2_CH1_ETR alternate functions. |
| 11 | PA1 | bidirectional | Port A bit 1; supports ADC12_IN1, USART2_RTS, TIM2_CH2 alternate functions. |
| 12 | PA2 | bidirectional | Port A bit 2; supports ADC12_IN2, USART2_TX, TIM2_CH3 alternate functions. |
| 13 | PA3 | bidirectional | Port A bit 3; supports ADC12_IN3, USART2_RX, TIM2_CH4 alternate functions. |
| 14 | PA4 | bidirectional | Port A bit 4; supports ADC12_IN4, SPI1_NSS, USART2_CK alternate functions. |
| 15 | PA5 | bidirectional | Port A bit 5; supports ADC12_IN5, SPI1_SCK alternate functions. |
| 16 | PA6 | bidirectional | Port A bit 6; supports ADC12_IN6, SPI1_MISO, TIM3_CH1 functions; remappable to TIM1_BKIN (footnote 9). |
| 17 | PA7 | bidirectional | Port A bit 7; supports ADC12_IN7, SPI1_MOSI, TIM3_CH2 functions; remappable to TIM1_CH1N (footnote 9). |
| 18 | PB0 | bidirectional | Port B bit 0; supports ADC12_IN8, TIM3_CH3 functions; remappable to TIM1_CH2N (footnote 9). |
| 19 | PB1 | bidirectional | Port B bit 1; supports ADC12_IN9, TIM3_CH4 functions; remappable to TIM1_CH3N (footnote 9). |
| 20 | PB2 | bidirectional | Port B bit 2 / BOOT1 boot select pin; 5 V tolerant I/O. |
| 21 | PB10 | bidirectional | Port B bit 10, 5 V tolerant; remappable to TIM2_CH3 alternate function. |
| 22 | PB11 | bidirectional | Port B bit 11, 5 V tolerant; remappable to TIM2_CH4 alternate function. |
| 23 | VSS_1 | power_in | Ground reference pin for digital supply. |
| 24 | VDD_1 | power_in | Digital supply voltage pin, operating range 2.0 to 3.6 V. |
| 25 | PB12 | bidirectional | Port B bit 12, 5 V tolerant; supports TIM1_BKIN alternate function. |
| 26 | PB13 | bidirectional | Port B bit 13, 5 V tolerant; supports TIM1_CH1N alternate function. |
| 27 | PB14 | bidirectional | Port B bit 14, 5 V tolerant; supports TIM1_CH2N alternate function. |
| 28 | PB15 | bidirectional | Port B bit 15, 5 V tolerant; supports TIM1_CH3N alternate function. |
| 29 | PA8 | bidirectional | Port A bit 8, 5 V tolerant; supports USART1_CK, TIM1_CH1, MCO (master clock output) functions. |
| 30 | PA9 | bidirectional | Port A bit 9, 5 V tolerant; supports USART1_TX, TIM1_CH2 alternate functions. |
| 31 | PA10 | bidirectional | Port A bit 10, 5 V tolerant; supports USART1_RX, TIM1_CH3 alternate functions. |
| 32 | PA11 | bidirectional | Port A bit 11, 5 V tolerant; supports USART1_CTS, CAN_RX, TIM1_CH4, USBDM (USB D minus) alternate functions. |
| 33 | PA12 | bidirectional | Port A bit 12, 5 V tolerant; supports USART1_RTS, CAN_TX, TIM1_ETR, USBDP (USB D plus) alternate functions. |
| 34 | PA13 | bidirectional | Port A bit 13 / JTMS-SWDIO, 5 V tolerant; JTAG test mode select or SWD data I/O debug interface pin. |
| 35 | VSS_2 | power_in | Ground reference pin for digital supply. |
| 36 | VDD_2 | power_in | Digital supply voltage pin, operating range 2.0 to 3.6 V. |
| 37 | PA14 | bidirectional | Port A bit 14 / JTCK-SWCLK, 5 V tolerant; JTAG test clock or SWD clock debug interface pin. |
| 38 | PA15 | bidirectional | Port A bit 15 / JTDI, 5 V tolerant; JTAG test data input debug interface; remappable to TIM2_CH1_ETR, SPI1_NSS (footnote 9). |
| 39 | PB3 | bidirectional | Port B bit 3 / JTDO, 5 V tolerant; JTAG test data output debug interface; remappable to TIM2_CH2, TRACESWO (footnote 9). |
| 40 | PB4 | bidirectional | Port B bit 4 / NJTRST, 5 V tolerant; JTAG test reset debug interface; remappable to TIM3_CH1, SPI1_MISO (footnote 9). |
| 41 | PB5 | bidirectional | Port B bit 5; supports I2C1_SMBA alternate function; remappable to TIM3_CH2, SPI1_MOSI (footnote 9). |
| 42 | PB6 | bidirectional | Port B bit 6, 5 V tolerant; I2C1_SCL main function; supports USART1_TX alternate function. |
| 43 | PB7 | bidirectional | Port B bit 7, 5 V tolerant; I2C1_SDA main function; supports USART1_RX alternate function. |
| 44 | BOOT0 | input | Boot mode selection input pin; sampled at reset to select boot from Flash memory (low) or system bootloader (high). |
| 45 | PB8 | bidirectional | Port B bit 8, 5 V tolerant; remappable to I2C1_SCL, CAN_RX alternate functions. |
| 46 | PB9 | bidirectional | Port B bit 9, 5 V tolerant; remappable to I2C1_SDA, CAN_TX alternate functions. |
| 47 | VSS_3 | power_in | Ground reference pin for digital supply. |
| 48 | VDD_3 | power_in | Digital supply voltage pin, operating range 2.0 to 3.6 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |
## CAD (KiCad official)
- Symbol: `STM32F103C6T6ATR`
- Footprint: `Package_QFP:LQFP-48_7x7mm_P0.5mm`
- 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files: `stm32f103c6t6atr-etched.step` / `stm32f103c6t6atr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32f103c6t6atr.step` / `stm32f103c6t6atr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588919865491406848) (99 pp, sha256 `31ab1fe3de6e6cf3`, retrieved 2026-10-03, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/stm32f103c6t6atr-datasheet.pdf)