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STM32F103C6T6A
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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSTM32F103C6T6A
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)
STM32F103C6T6A from STMicroelectronics, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VBAT | power_in | Backup domain power supply for RTC and backup registers, 1.8 to 3.6 V. |
| 2 | PC13-TAMPER-RTC | bidirectional | General purpose I/O or RTC tamper input, maximum output current ±3 mA. |
| 3 | PC14-OSC32_IN | bidirectional | General purpose I/O or 32.768 kHz oscillator input, maximum output current ±3 mA. |
| 4 | PC15-OSC32_OUT | bidirectional | General purpose I/O or 32.768 kHz oscillator output, maximum output current ±3 mA. |
| 5 | PD0-OSC_IN | input | 8 MHz oscillator input (OSC_IN) or general purpose I/O (PD0) after software remap. |
| 6 | PD1-OSC_OUT | output | 8 MHz oscillator output (OSC_OUT) or general purpose I/O (PD1) after software remap. |
| 7 | NRST | input | Active-low asynchronous reset input with internal pull-up resistor (30-50 kΩ) and input filtering. |
| 8 | VSSA | power_in | Analog ground reference for ADC, analog circuits, and power supply supervisor. |
| 9 | VDDA | power_in | Analog power supply for ADC and analog circuits, 2.4 to 3.6 V when ADC is used, 2.0 to 3.6 V otherwise. |
| 10 | PA0-WKUP | bidirectional | General purpose bidirectional I/O, wakeup input, ADC12_IN0, or TIM2_CH1_ETR alternate function. |
| 11 | PA1 | bidirectional | General purpose bidirectional I/O or ADC12_IN1 alternate function. |
| 12 | PA2 | bidirectional | General purpose bidirectional I/O or ADC12_IN2 alternate function. |
| 13 | PA3 | bidirectional | General purpose bidirectional I/O or ADC12_IN3 alternate function. |
| 14 | PA4 | bidirectional | General purpose bidirectional I/O or ADC12_IN4 alternate function. |
| 15 | PA5 | bidirectional | General purpose bidirectional I/O or ADC12_IN5 alternate function. |
| 16 | PA6 | bidirectional | General purpose bidirectional I/O or ADC12_IN6 alternate function. |
| 17 | PA7 | bidirectional | General purpose bidirectional I/O or ADC12_IN7 alternate function. |
| 18 | PB0 | bidirectional | General purpose bidirectional I/O or ADC12_IN8 alternate function. |
| 19 | PB1 | bidirectional | General purpose bidirectional I/O or ADC12_IN9 alternate function. |
| 20 | PB2 | bidirectional | 5V tolerant general purpose bidirectional I/O or BOOT1 alternate function. |
| 21 | PB10 | bidirectional | 5V tolerant general purpose bidirectional I/O or TIM2_CH3 timer output alternate function. |
| 22 | PB11 | bidirectional | 5V tolerant general purpose bidirectional I/O or TIM2_CH4 timer output alternate function. |
| 23 | VSS_1 | power_in | Ground (VSS) for main digital power supply decoupling of VDD_1. |
| 24 | VDD_1 | power_in | Main digital power supply for microcontroller core, 2.0 to 3.6 V. |
| 25 | PB12 | bidirectional | 5V tolerant general purpose bidirectional I/O or TIM1_BKIN timer input alternate function. |
| 26 | PB13 | bidirectional | 5V tolerant general purpose bidirectional I/O or TIM1_CH1N timer output alternate function. |
| 27 | PB14 | bidirectional | 5V tolerant general purpose bidirectional I/O or TIM1_CH2N timer output alternate function. |
| 28 | PB15 | bidirectional | 5V tolerant general purpose bidirectional I/O or TIM1_CH3N timer output alternate function. |
| 29 | PA8 | bidirectional | 5V tolerant general purpose bidirectional I/O, USART1_CK, TIM1_CH1, or MCO clock output alternate functions. |
| 30 | PA9 | bidirectional | 5V tolerant general purpose bidirectional I/O or USART1_TX serial output alternate function. |
| 31 | PA10 | bidirectional | 5V tolerant general purpose bidirectional I/O or USART1_RX serial input alternate function. |
| 32 | PA11 | bidirectional | 5V tolerant general purpose bidirectional I/O, USART1_CTS, CAN_RX, TIM1_CH4, or USBDM alternate functions. |
| 33 | PA12 | bidirectional | 5V tolerant general purpose bidirectional I/O, USART1_RTS, CAN_TX, TIM1_ETR, or USBDP alternate functions. |
| 34 | PA13 | bidirectional | 5V tolerant general purpose bidirectional I/O or JTMS/SWDIO debug interface alternate function. |
| 35 | VSS_2 | power_in | Ground (VSS) for main digital power supply decoupling of VDD_2. |
| 36 | VDD_2 | power_in | Main digital power supply for microcontroller core, 2.0 to 3.6 V. |
| 37 | PA14 | bidirectional | 5V tolerant general purpose bidirectional I/O or JTCK/SWCLK debug interface alternate function. |
| 38 | PA15 | bidirectional | 5V tolerant general purpose bidirectional I/O, JTDI, or TIM2_CH1_ETR/SPI1_NSS alternate functions. |
| 39 | PB3 | bidirectional | 5V tolerant general purpose bidirectional I/O, JTDO, or TIM2_CH2/SPI1_SCK alternate functions. |
| 40 | PB4 | bidirectional | 5V tolerant general purpose bidirectional I/O, NJTRST, or TIM3_CH1/SPI1_MISO alternate functions. |
| 41 | PB5 | bidirectional | General purpose bidirectional I/O, I2C1_SMBA, or TIM3_CH2/SPI1_MOSI alternate functions. |
| 42 | PB6 | bidirectional | 5V tolerant general purpose bidirectional I/O, I2C1_SCL, or USART1_TX alternate functions. |
| 43 | PB7 | bidirectional | 5V tolerant general purpose bidirectional I/O, I2C1_SDA, or USART1_RX alternate functions. |
| 44 | BOOT0 | input | Boot mode selection input (0=boot from Flash, 1=boot from system memory via USART1). |
| 45 | PB8 | bidirectional | 5V tolerant general purpose bidirectional I/O, I2C1_SCL, or CAN_RX alternate functions. |
| 46 | PB9 | bidirectional | 5V tolerant general purpose bidirectional I/O, I2C1_SDA, or CAN_TX alternate functions. |
| 47 | VSS_3 | power_in | Ground (VSS) for main digital power supply decoupling of VDD_3. |
| 48 | VDD_3 | power_in | Main digital power supply for microcontroller core, 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:
STM32F103C6T6A - Footprint:
Package_QFP:LQFP-48_7x7mm_P0.5mm - 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32f103c6t6a-etched.step/stm32f103c6t6a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32f103c6t6a.step/stm32f103c6t6a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (90 pp, sha256
d1151c2440c926c0, retrieved 2026-09-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).