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STM32F103RBT7
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-64(10x10). 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
markdownSTM32F103RBT7
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)
STM32F103RBT7 from STMicroelectronics, in a LQFP-64(10x10). 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 | Backup-domain supply input for the RTC and backup registers (VBAT supply for RTC and backup registers). |
| 2 | PC13 | bidirectional | General-purpose I/O (not 5 V tolerant, also TAMPER-RTC) supplied through the power switch, which sinks only 3 mA, so output speed must not exceed 2 MHz with a 30 pF load and the pin must not be used as a current source such as an LED driver. |
| 3 | PC14-OSC32_IN | bidirectional | General-purpose I/O (not 5 V tolerant, also 32 kHz oscillator input OSC32_IN) supplied through the power switch, limited to 3 mA sink, 2 MHz maximum output speed at 30 pF, and no current-source use. |
| 4 | PC15-OSC32_OUT | bidirectional | General-purpose I/O (not 5 V tolerant, also 32 kHz oscillator output OSC32_OUT) supplied through the power switch, limited to 3 mA sink, 2 MHz maximum output speed at 30 pF, and no current-source use. |
| 5 | OSC_IN | input | High-speed external oscillator input (HSE 4-16 MHz oscillator); after reset this pin is OSC_IN, and PD0 can be remapped onto it by software. |
| 6 | OSC_OUT | output | High-speed external oscillator output (HSE 4-16 MHz oscillator); after reset this pin is OSC_OUT, and PD1 can be remapped onto it by software. |
| 7 | NRST | bidirectional | Device reset pin, listed as I/O in the pin definitions; its electrical characteristics are given in section 5.3.14. |
| 8 | PC0 | bidirectional | General-purpose I/O (not 5 V tolerant) with ADC12_IN10 analog input function. |
| 9 | PC1 | bidirectional | General-purpose I/O (not 5 V tolerant) with ADC12_IN11 analog input function. |
| 10 | PC2 | bidirectional | General-purpose I/O (not 5 V tolerant) with ADC12_IN12 analog input function. |
| 11 | PC3 | bidirectional | General-purpose I/O (not 5 V tolerant) with ADC12_IN13 analog input function. |
| 12 | VSSA | power_in | Analog ground pin for the ADC and analog circuitry, with all voltages referenced to VSS. |
| 13 | VDDA | power_in | Analog supply pin for the ADC; the temperature sensor conversion range is specified as 2 V < VDDA < 3.6 V. |
| 14 | PA0-WKUP | bidirectional | General-purpose I/O (not 5 V tolerant) with WKUP wake-up, USART2_CTS, ADC12_IN0 and TIM2_CH1_ETR alternate functions. |
| 15 | PA1 | bidirectional | General-purpose I/O (not 5 V tolerant) with USART2_RTS, ADC12_IN1 and TIM2_CH2 alternate functions. |
| 16 | PA2 | bidirectional | General-purpose I/O (not 5 V tolerant) with USART2_TX, ADC12_IN2 and TIM2_CH3 alternate functions. |
| 17 | PA3 | bidirectional | General-purpose I/O (not 5 V tolerant) with USART2_RX, ADC12_IN3 and TIM2_CH4 alternate functions. |
| 18 | VSS_4 | power_in | Ground pin of the device, the reference for all voltages (VSS). |
| 19 | VDD_4 | power_in | Digital supply pin for I/Os and core; the application supply range is 2.0 to 3.6 V. |
| 20 | PA4 | bidirectional | General-purpose I/O (not 5 V tolerant) with SPI1_NSS, USART2_CK and ADC12_IN4 alternate functions. |
| 21 | PA5 | bidirectional | General-purpose I/O (not 5 V tolerant) with SPI1_SCK and ADC12_IN5 alternate functions. |
| 22 | PA6 | bidirectional | General-purpose I/O (not 5 V tolerant) with SPI1_MISO, ADC12_IN6, TIM3_CH1 and TIM1_BKIN (remap) alternate functions. |
| 23 | PA7 | bidirectional | General-purpose I/O (not 5 V tolerant) with SPI1_MOSI, ADC12_IN7, TIM3_CH2 and TIM1_CH1N (remap) alternate functions. |
| 24 | PC4 | bidirectional | General-purpose I/O (not 5 V tolerant) with ADC12_IN14 analog input function. |
| 25 | PC5 | bidirectional | General-purpose I/O (not 5 V tolerant) with ADC12_IN15 analog input function. |
| 26 | PB0 | bidirectional | General-purpose I/O (not 5 V tolerant) with ADC12_IN8, TIM3_CH3 and TIM1_CH2N (remap) alternate functions. |
| 27 | PB1 | bidirectional | General-purpose I/O (not 5 V tolerant) with ADC12_IN9, TIM3_CH4 and TIM1_CH3N (remap) alternate functions. |
| 28 | PB2/BOOT1 | bidirectional | 5 V tolerant general-purpose I/O that also carries the BOOT1 boot-mode function. |
| 29 | PB10 | bidirectional | 5 V tolerant general-purpose I/O with I2C2_SCL, USART3_TX and TIM2_CH3 alternate functions. |
| 30 | PB11 | bidirectional | 5 V tolerant general-purpose I/O with I2C2_SDA, USART3_RX and TIM2_CH4 alternate functions. |
| 31 | VSS_1 | power_in | Ground pin of the device, the reference for all voltages (VSS). |
| 32 | VDD_1 | power_in | Digital supply pin for I/Os and core; the application supply range is 2.0 to 3.6 V. |
| 33 | PB12 | bidirectional | 5 V tolerant general-purpose I/O with SPI2_NSS, I2C2_SMBAL, USART3_CK and TIM1_BKIN alternate functions. |
| 34 | PB13 | bidirectional | 5 V tolerant general-purpose I/O with SPI2_SCK, USART3_CTS and TIM1_CH1N alternate functions. |
| 35 | PB14 | bidirectional | 5 V tolerant general-purpose I/O with SPI2_MISO, USART3_RTS and TIM1_CH2N alternate functions. |
| 36 | PB15 | bidirectional | 5 V tolerant general-purpose I/O with SPI2_MOSI and TIM1_CH3N alternate functions. |
| 37 | PC6 | bidirectional | 5 V tolerant general-purpose I/O with TIM3_CH1 alternate function. |
| 38 | PC7 | bidirectional | 5 V tolerant general-purpose I/O with TIM3_CH2 alternate function. |
| 39 | PC8 | bidirectional | 5 V tolerant general-purpose I/O with TIM3_CH3 alternate function. |
| 40 | PC9 | bidirectional | 5 V tolerant general-purpose I/O with TIM3_CH4 alternate function. |
| 41 | PA8 | bidirectional | 5 V tolerant general-purpose I/O with USART1_CK, TIM1_CH1 and MCO alternate functions. |
| 42 | PA9 | bidirectional | 5 V tolerant general-purpose I/O with USART1_TX and TIM1_CH2 alternate functions. |
| 43 | PA10 | bidirectional | 5 V tolerant general-purpose I/O with USART1_RX and TIM1_CH3 alternate functions. |
| 44 | PA11 | bidirectional | 5 V tolerant general-purpose I/O with USART1_CTS, CANRX, USBDM and TIM1_CH4 alternate functions. |
| 45 | PA12 | bidirectional | 5 V tolerant general-purpose I/O with USART1_RTS, CANTX, USBDP and TIM1_ETR alternate functions. |
| 46 | PA13 | bidirectional | 5 V tolerant general-purpose I/O with JTMS/SWDIO debug function. |
| 47 | VSS_2 | power_in | Ground pin of the device, the reference for all voltages (VSS). |
| 48 | VDD_2 | power_in | Digital supply pin for I/Os and core; the application supply range is 2.0 to 3.6 V. |
| 49 | PA14 | bidirectional | 5 V tolerant general-purpose I/O with JTCK/SWCLK debug function. |
| 50 | PA15 | bidirectional | 5 V tolerant general-purpose I/O with JTDI, TIM2_CH1_ETR and SPI1_NSS (remap) alternate functions. |
| 51 | PC10 | bidirectional | 5 V tolerant general-purpose I/O with USART3_TX alternate function. |
| 52 | PC11 | bidirectional | 5 V tolerant general-purpose I/O with USART3_RX alternate function. |
| 53 | PC12 | bidirectional | 5 V tolerant general-purpose I/O with USART3_CK alternate function. |
| 54 | PD2 | bidirectional | 5 V tolerant general-purpose I/O with TIM3_ETR alternate function. |
| 55 | PB3 | bidirectional | 5 V tolerant general-purpose I/O with JTDO/TRACESWO debug functions and TIM2_CH2 and SPI1_SCK alternate functions. |
| 56 | PB4 | bidirectional | 5 V tolerant general-purpose I/O with JNTRST debug function, TIM3_CH1 and SPI1_MISO alternate functions. |
| 57 | PB5 | bidirectional | General-purpose I/O (not 5 V tolerant) with I2C1_SMBAL, TIM3_CH2 and SPI1_MOSI alternate functions. |
| 58 | PB6 | bidirectional | 5 V tolerant general-purpose I/O with I2C1_SCL, TIM4_CH1 and USART1_TX alternate functions. |
| 59 | PB7 | bidirectional | 5 V tolerant general-purpose I/O with I2C1_SDA, TIM4_CH2 and USART1_RX alternate functions. |
| 60 | BOOT0 | input | Boot mode selection input BOOT0. |
| 61 | PB8 | bidirectional | 5 V tolerant general-purpose I/O with TIM4_CH3, I2C1_SCL and CANRX alternate functions. |
| 62 | PB9 | bidirectional | 5 V tolerant general-purpose I/O with TIM4_CH4, I2C1_SDA and CANTX alternate functions. |
| 63 | VSS_3 | power_in | Ground pin of the device, the reference for all voltages (VSS). |
| 64 | VDD_3 | power_in | Digital supply pin for I/Os and core; the application supply range is 2.0 to 3.6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-64(10x10) |
| Category | Embedded Processors & Controllers |
| Pins | 64 |
CAD (KiCad official)
- Symbol:
STM32F103RBT7 - Footprint:
Package_QFP:LQFP-64_10x10mm_P0.5mm - 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files:
stm32f103rbt7-etched.step/stm32f103rbt7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32f103rbt7.step/stm32f103rbt7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (117 pp, sha256
4741c03c5793745c, retrieved 2026-10-11, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(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).