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STM32F103VBT6
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-100(14x14). 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
markdownSTM32F103VBT6
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-100(14x14)
STM32F103VBT6 from STMicroelectronics, in a LQFP-100(14x14). 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 | PE2 | bidirectional | 5V-tolerant general-purpose I/O PE2, alternate function TRACECK (trace clock output). |
| 2 | PE3 | bidirectional | 5V-tolerant general-purpose I/O PE3, alternate function TRACED0. |
| 3 | PE4 | bidirectional | 5V-tolerant general-purpose I/O PE4, alternate function TRACED1. |
| 4 | PE5 | bidirectional | 5V-tolerant general-purpose I/O PE5, alternate function TRACED2. |
| 5 | PE6 | bidirectional | 5V-tolerant general-purpose I/O PE6, alternate function TRACED3. |
| 6 | VBAT | power_in | Backup power supply, 1.8 to 3.6 V, feeds RTC, 32 kHz oscillator and backup registers when VDD is not present. |
| 7 | PC13-TAMPER-RTC | bidirectional | General-purpose I/O PC13 supplied through the backup power switch (limited to 3 mA sink/source, speed ≤2 MHz, load ≤30 pF); alternate function TAMPER-RTC. |
| 8 | PC14-OSC32_IN | bidirectional | General-purpose I/O PC14 supplied through the backup power switch (limited current), or OSC32_IN input for the 32.768 kHz RTC crystal oscillator. |
| 9 | PC15-OSC32_OUT | bidirectional | General-purpose I/O PC15 supplied through the backup power switch (limited current), or OSC32_OUT output for the 32.768 kHz RTC crystal oscillator. |
| 10 | VSS_5 | power_in | Digital ground supply pin. |
| 11 | VDD_5 | power_in | Digital power supply pin, 2.0 to 3.6 V. |
| 12 | OSC_IN | input | Input for the 4-16 MHz external HSE crystal/ceramic resonator or external clock source; can be remapped to GPIO PD0. |
| 13 | OSC_OUT | output | Output for the 4-16 MHz external HSE crystal/ceramic resonator; can be remapped to GPIO PD1. |
| 14 | NRST | bidirectional | Active-low reset input/output with internal ~40 kΩ pull-up; input low level ≤0.8 V, input high level ≥2 V, holds device in reset while asserted. |
| 15 | PC0 | bidirectional | 5V-tolerant general-purpose I/O PC0, alternate function ADC12_IN10. |
| 16 | PC1 | bidirectional | 5V-tolerant general-purpose I/O PC1, alternate function ADC12_IN11. |
| 17 | PC2 | bidirectional | 5V-tolerant general-purpose I/O PC2, alternate function ADC12_IN12. |
| 18 | PC3 | bidirectional | 5V-tolerant general-purpose I/O PC3, alternate function ADC12_IN13. |
| 19 | VSSA | power_in | Analog ground supply for ADC, reset blocks, RC oscillators and PLL. |
| 20 | VREF- | power_in | ADC negative reference voltage supply pin (100-pin package only). |
| 21 | VREF+ | power_in | ADC positive reference voltage supply pin, 2.4 V to VDDA (100-pin package only). |
| 22 | VDDA | power_in | Analog power supply, 2.0 to 3.6 V (minimum 2.4 V when the ADC is used), for ADC, reset blocks, RC oscillators and PLL. |
| 23 | PA0-WKUP | bidirectional | 5V-tolerant general-purpose I/O PA0, standby wakeup pin; alternate functions USART2_CTS, ADC12_IN0, TIM2_CH1_ETR. |
| 24 | PA1 | bidirectional | 5V-tolerant general-purpose I/O PA1; alternate functions USART2_RTS, ADC12_IN1, TIM2_CH2. |
| 25 | PA2 | bidirectional | 5V-tolerant general-purpose I/O PA2; alternate functions USART2_TX, ADC12_IN2, TIM2_CH3. |
| 26 | PA3 | bidirectional | 5V-tolerant general-purpose I/O PA3; alternate functions USART2_RX, ADC12_IN3, TIM2_CH4. |
| 27 | VSS_4 | power_in | Digital ground supply pin. |
| 28 | VDD_4 | power_in | Digital power supply pin, 2.0 to 3.6 V. |
| 29 | PA4 | bidirectional | 5V-tolerant general-purpose I/O PA4; alternate functions SPI1_NSS, USART2_CK, ADC12_IN4. |
| 30 | PA5 | bidirectional | 5V-tolerant general-purpose I/O PA5; alternate functions SPI1_SCK, ADC12_IN5. |
| 31 | PA6 | bidirectional | 5V-tolerant general-purpose I/O PA6; alternate functions SPI1_MISO, ADC12_IN6, TIM3_CH1 (default) and TIM1_BKIN. |
| 32 | PA7 | bidirectional | 5V-tolerant general-purpose I/O PA7; alternate functions SPI1_MOSI, ADC12_IN7, TIM3_CH2 (default) and TIM1_CH1N. |
| 33 | PC4 | bidirectional | 5V-tolerant general-purpose I/O PC4, alternate function ADC12_IN14. |
| 34 | PC5 | bidirectional | 5V-tolerant general-purpose I/O PC5, alternate function ADC12_IN15. |
| 35 | PB0 | bidirectional | 5V-tolerant general-purpose I/O PB0; alternate functions ADC12_IN8, TIM3_CH3 (default) and TIM1_CH2N. |
| 36 | PB1 | bidirectional | 5V-tolerant general-purpose I/O PB1; alternate functions ADC12_IN9, TIM3_CH4 (default) and TIM1_CH3N. |
| 37 | PB2 | bidirectional | 5V-tolerant general-purpose I/O PB2, also used as BOOT1 boot-mode selection input. |
| 38 | PE7 | bidirectional | 5V-tolerant general-purpose I/O PE7, alternate function TIM1_ETR. |
| 39 | PE8 | bidirectional | 5V-tolerant general-purpose I/O PE8, alternate function TIM1_CH1N. |
| 40 | PE9 | bidirectional | 5V-tolerant general-purpose I/O PE9, alternate function TIM1_CH1. |
| 41 | PE10 | bidirectional | 5V-tolerant general-purpose I/O PE10, alternate function TIM1_CH2N. |
| 42 | PE11 | bidirectional | 5V-tolerant general-purpose I/O PE11, alternate function TIM1_CH2. |
| 43 | PE12 | bidirectional | 5V-tolerant general-purpose I/O PE12, alternate function TIM1_CH3N. |
| 44 | PE13 | bidirectional | 5V-tolerant general-purpose I/O PE13, alternate function TIM1_CH3. |
| 45 | PE14 | bidirectional | 5V-tolerant general-purpose I/O PE14, alternate function TIM1_CH4. |
| 46 | PE15 | bidirectional | 5V-tolerant general-purpose I/O PE15, alternate function TIM1_BKIN. |
| 47 | PB10 | bidirectional | 5V-tolerant general-purpose I/O PB10; alternate functions I2C2_SCL, USART3_TX (default) and TIM2_CH3. |
| 48 | PB11 | bidirectional | 5V-tolerant general-purpose I/O PB11; alternate functions I2C2_SDA, USART3_RX (default) and TIM2_CH4. |
| 49 | VSS_1 | power_in | Digital ground supply pin. |
| 50 | VDD_1 | power_in | Digital power supply pin, 2.0 to 3.6 V. |
| 51 | PB12 | bidirectional | 5V-tolerant general-purpose I/O PB12; alternate functions SPI2_NSS, I2C2_SMBAl, USART3_CK (default) and TIM1_BKIN. |
| 52 | PB13 | bidirectional | 5V-tolerant general-purpose I/O PB13; alternate functions SPI2_SCK, USART3_CTS (default) and TIM1_CH1N. |
| 53 | PB14 | bidirectional | 5V-tolerant general-purpose I/O PB14; alternate functions SPI2_MISO, USART3_RTS (default) and TIM1_CH2N. |
| 54 | PB15 | bidirectional | 5V-tolerant general-purpose I/O PB15; alternate functions SPI2_MOSI and TIM1_CH3N. |
| 55 | PD8 | bidirectional | 5V-tolerant general-purpose I/O PD8, alternate function USART3_TX. |
| 56 | PD9 | bidirectional | 5V-tolerant general-purpose I/O PD9, alternate function USART3_RX. |
| 57 | PD10 | bidirectional | 5V-tolerant general-purpose I/O PD10, alternate function USART3_CK. |
| 58 | PD11 | bidirectional | 5V-tolerant general-purpose I/O PD11, alternate function USART3_CTS. |
| 59 | PD12 | bidirectional | 5V-tolerant general-purpose I/O PD12; alternate functions TIM4_CH1 and USART3_RTS. |
| 60 | PD13 | bidirectional | 5V-tolerant general-purpose I/O PD13, alternate function TIM4_CH2. |
| 61 | PD14 | bidirectional | 5V-tolerant general-purpose I/O PD14, alternate function TIM4_CH3. |
| 62 | PD15 | bidirectional | 5V-tolerant general-purpose I/O PD15, alternate function TIM4_CH4. |
| 63 | PC6 | bidirectional | 5V-tolerant general-purpose I/O PC6, alternate function TIM3_CH1. |
| 64 | PC7 | bidirectional | 5V-tolerant general-purpose I/O PC7, alternate function TIM3_CH2. |
| 65 | PC8 | bidirectional | 5V-tolerant general-purpose I/O PC8, alternate function TIM3_CH3. |
| 66 | PC9 | bidirectional | 5V-tolerant general-purpose I/O PC9, alternate function TIM3_CH4. |
| 67 | PA8 | bidirectional | 5V-tolerant general-purpose I/O PA8; alternate functions USART1_CK, TIM1_CH1 and MCO clock output. |
| 68 | PA9 | bidirectional | 5V-tolerant general-purpose I/O PA9; alternate functions USART1_TX (default) and TIM1_CH2. |
| 69 | PA10 | bidirectional | 5V-tolerant general-purpose I/O PA10; alternate functions USART1_RX (default) and TIM1_CH3. |
| 70 | PA11 | bidirectional | 5V-tolerant general-purpose I/O PA11; alternate functions USART1_CTS, CANRX (default), USBDM and TIM1_CH4. |
| 71 | PA12 | bidirectional | 5V-tolerant general-purpose I/O PA12; alternate functions USART1_RTS, CANTX (default), USBDP and TIM1_ETR. |
| 72 | PA13 | bidirectional | 5V-tolerant general-purpose I/O PA13; default function JTMS/SWDIO debug pin. |
| 73 | NC | unconnected | Not connected pin. |
| 74 | VSS_2 | power_in | Digital ground supply pin. |
| 75 | VDD_2 | power_in | Digital power supply pin, 2.0 to 3.6 V. |
| 76 | PA14 | bidirectional | 5V-tolerant general-purpose I/O PA14; default function JTCK/SWCLK debug pin. |
| 77 | PA15 | bidirectional | 5V-tolerant general-purpose I/O PA15; default function JTDI debug pin, remap functions include PA15, SPI1_NSS and TIM2_CH1_ETR. |
| 78 | PC10 | bidirectional | 5V-tolerant general-purpose I/O PC10, alternate function USART3_TX. |
| 79 | PC11 | bidirectional | 5V-tolerant general-purpose I/O PC11, alternate function USART3_RX. |
| 80 | PC12 | bidirectional | 5V-tolerant general-purpose I/O PC12, alternate function USART3_CK. |
| 81 | PD0 | bidirectional | 5V-tolerant general-purpose I/O PD0, available by default on this 100-pin package; alternate function CANRX. |
| 82 | PD1 | bidirectional | 5V-tolerant general-purpose I/O PD1, available by default on this 100-pin package; alternate function CANTX. |
| 83 | PD2 | bidirectional | 5V-tolerant general-purpose I/O PD2, alternate function TIM3_ETR. |
| 84 | PD3 | bidirectional | 5V-tolerant general-purpose I/O PD3, alternate function USART2_CTS. |
| 85 | PD4 | bidirectional | 5V-tolerant general-purpose I/O PD4, alternate function USART2_RTS. |
| 86 | PD5 | bidirectional | 5V-tolerant general-purpose I/O PD5, alternate function USART2_TX. |
| 87 | PD6 | bidirectional | 5V-tolerant general-purpose I/O PD6, alternate function USART2_RX. |
| 88 | PD7 | bidirectional | 5V-tolerant general-purpose I/O PD7, alternate function USART2_CK. |
| 89 | PB3 | bidirectional | 5V-tolerant general-purpose I/O PB3; default function JTDO/TRACESWO debug pin, remap functions PB3 and SPI1_SCK. |
| 90 | PB4 | bidirectional | 5V-tolerant general-purpose I/O PB4; default function JNTRST (JTAG reset), remap functions TIM3_CH1, PB4 and SPI1_MISO. |
| 91 | PB5 | bidirectional | General-purpose I/O PB5 (not 5V tolerant); alternate functions I2C1_SMBAl (default), TIM3_CH2 and SPI1_MOSI (remap). |
| 92 | PB6 | bidirectional | 5V-tolerant general-purpose I/O PB6; alternate functions I2C1_SCL and TIM4_CH1 (default), USART1_TX (remap). |
| 93 | PB7 | bidirectional | 5V-tolerant general-purpose I/O PB7; alternate functions I2C1_SDA and TIM4_CH2 (default), USART1_RX (remap). |
| 94 | BOOT0 | input | Boot mode selection input, sampled at reset (with BOOT1/PB2) to select boot from Flash, System memory or SRAM; input voltage range 0 to 5.5 V. |
| 95 | PB8 | bidirectional | 5V-tolerant general-purpose I/O PB8; alternate functions TIM4_CH3 (default), I2C1_SCL and CANRX (remap). |
| 96 | PB9 | bidirectional | 5V-tolerant general-purpose I/O PB9; alternate functions TIM4_CH4 (default), I2C1_SDA and CANTX (remap). |
| 97 | PE0 | bidirectional | 5V-tolerant general-purpose I/O PE0, alternate function TIM4_ETR. |
| 98 | PE1 | bidirectional | 5V-tolerant general-purpose I/O PE1, no dedicated alternate function listed. |
| 99 | VSS_3 | power_in | Digital ground supply pin. |
| 100 | VDD_3 | power_in | Digital power supply pin, 2.0 to 3.6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-100(14x14) |
| Category | Embedded Processors & Controllers |
| Pins | 100 |
CAD (KiCad official)
- Symbol:
STM32F103VBT6 - Footprint:
Package_QFP:LQFP-100_14x14mm_P0.5mm - 3D model: LQFP-100(14x14) (KiCad packages3D, STEP)
- 3D model files:
stm32f103vbt6-etched.step/stm32f103vbt6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32f103vbt6.step/stm32f103vbt6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (105 pp, sha256
ceab0f159ae79118, retrieved 2026-09-23, 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).