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STM32F103RCT6
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
markdownSTM32F103RCT6
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)
STM32F103RCT6 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 battery supply (1.8 to 3.6 V) for RTC and backup registers |
| 2 | PC13-TAMPER-RTC | bidirectional | General-purpose I/O or tamper/RTC function, powered through backup domain switch |
| 3 | PC14-OSC32_IN | input | Low-speed external oscillator input or general-purpose I/O |
| 4 | PC15-OSC32_OUT | output | Low-speed external oscillator output or general-purpose I/O |
| 5 | PD0-OSC_IN | input | High-speed external oscillator input, remappable to FSMC_D2 or CAN_RX |
| 6 | PD1-OSC_OUT | output | High-speed external oscillator output, remappable to FSMC_D3 or CAN_TX |
| 7 | NRST | input | Active-low external reset pin with internal Schmitt trigger and weak pull-up |
| 8 | PC0 | bidirectional | General-purpose I/O or ADC123_IN10 channel |
| 9 | PC1 | bidirectional | General-purpose I/O or ADC123_IN11 channel |
| 10 | PC2 | bidirectional | General-purpose I/O or ADC123_IN12 channel |
| 11 | PC3 | bidirectional | General-purpose I/O or ADC123_IN13 channel; in WLCSP64 must be configured as output mode with 0 written to avoid extra low-power consumption |
| 12 | PD9 | bidirectional | General-purpose I/O with FSMC_D14 or USART3_RX alternate function |
| 13 | PD8 | bidirectional | General-purpose I/O with FSMC_D13 or USART3_TX alternate function |
| 14 | VSSA | power_in | Analog ground supply for ADC, DAC, reset and PLL circuits |
| 15 | VDDA | power_in | Analog power supply (2.4 to 3.6 V) for ADC, DAC, reset and PLL; must connect to VDD with max 300 mV difference |
| 16 | PA0-WKUP | bidirectional | General-purpose I/O, wakeup pin, or USART2_CTS/ADC123_IN0/TIM2_CH1_ETR |
| 17 | PA1 | bidirectional | General-purpose I/O or USART2_RTS/ADC123_IN1/TIM2_CH2 |
| 18 | PA2 | bidirectional | General-purpose I/O or USART2_TX/ADC123_IN2/TIM2_CH3 |
| 19 | PA3 | bidirectional | General-purpose I/O or USART2_RX/ADC123_IN3/TIM2_CH4 |
| 20 | VSS_1 | power_in | Ground supply for digital circuits |
| 21 | VDD_1 | power_in | Main power supply (2.0 to 3.6 V) for core and I/Os |
| 22 | PA4 | bidirectional | General-purpose I/O, remappable to SPI1_NSS/USART2_CK or DAC_OUT1/ADC12_IN4 |
| 23 | PA5 | bidirectional | General-purpose I/O, remappable to SPI1_SCK or DAC_OUT2/ADC12_IN5 |
| 24 | PA6 | bidirectional | General-purpose I/O, remappable to SPI1_MISO/TIM3_CH1 or TIM8_BKIN/ADC12_IN6 |
| 25 | PA7 | bidirectional | General-purpose I/O, remappable to SPI1_MOSI/TIM3_CH2 or TIM8_CH1N/ADC12_IN7 |
| 26 | PC4 | bidirectional | General-purpose I/O or ADC12_IN14 channel |
| 27 | PC5 | bidirectional | General-purpose I/O or ADC12_IN15 channel |
| 28 | PB0 | bidirectional | General-purpose I/O or ADC12_IN8/TIM3_CH3 with TIM8_CH2N alternate |
| 29 | PB1 | bidirectional | General-purpose I/O or ADC12_IN9/TIM3_CH4 with TIM8_CH3N alternate |
| 30 | PB2/BOOT1 | bidirectional | General-purpose I/O with internal pull-down; BOOT1 pin selects boot source during reset |
| 31 | PB3/JTDO | bidirectional | JTAG test data output or general-purpose I/O remappable to SPI3_SCK/TIM2_CH2 |
| 32 | PB4/NJTRST | bidirectional | JTAG test reset or general-purpose I/O remappable to SPI3_MISO/TIM3_CH1 |
| 33 | PB5 | bidirectional | General-purpose I/O or remappable to I2C1_SMBA/SPI3_MOSI/TIM3_CH2 |
| 34 | PB6 | bidirectional | General-purpose I/O or remappable to I2C1_SCL/TIM4_CH1/USART1_TX |
| 35 | PB7 | bidirectional | General-purpose I/O or remappable to I2C1_SDA/TIM4_CH2/USART1_RX |
| 36 | BOOT0 | input | Boot mode selection pin; internal pull-down, selects boot source during reset |
| 37 | PB8 | bidirectional | General-purpose I/O or remappable to TIM4_CH3/SDIO_D4 or I2C1_SCL/CAN_RX |
| 38 | PB9 | bidirectional | General-purpose I/O or remappable to TIM4_CH4/SDIO_D5 or I2C1_SDA/CAN_TX |
| 39 | VSS_2 | power_in | Ground supply for digital circuits |
| 40 | VDD_2 | power_in | Main power supply (2.0 to 3.6 V) for core and I/Os |
| 41 | PA8 | bidirectional | General-purpose I/O or remappable to USART1_CK/TIM1_CH1 or MCO (master clock output) |
| 42 | PA9 | bidirectional | General-purpose I/O or remappable to USART1_TX/TIM1_CH2 |
| 43 | PA10 | bidirectional | General-purpose I/O or remappable to USART1_RX/TIM1_CH3 |
| 44 | PA11 | bidirectional | General-purpose I/O or USART1_CTS/USB_DM/CAN_RX/TIM1_CH4 |
| 45 | PA12 | bidirectional | General-purpose I/O or USART1_RTS/USB_DP/CAN_TX/TIM1_ETR |
| 46 | PA13 | bidirectional | JTAG test mode select (JTMS) / Serial wire debug I/O (SWDIO); can be remapped to PA13 |
| 47 | PA14 | bidirectional | JTAG test clock (JTCK) / Serial wire debug clock (SWCLK); can be remapped to PA14 |
| 48 | PA15 | bidirectional | JTAG test data input (JTDI) or general-purpose I/O remappable to SPI3_NSS/TIM2_CH1_ETR |
| 49 | PC10 | bidirectional | General-purpose I/O or remappable to UART4_TX/SDIO_D2 or USART3_TX |
| 50 | PC11 | bidirectional | General-purpose I/O or remappable to UART4_RX/SDIO_D3 or USART3_RX |
| 51 | PC12 | bidirectional | General-purpose I/O or remappable to UART5_TX/SDIO_CK or USART3_CK |
| 52 | PD2 | bidirectional | General-purpose I/O or remappable to TIM3_ETR/UART5_RX/SDIO_CMD |
| 53 | PD3 | bidirectional | General-purpose I/O or remappable to FSMC_CLK or USART2_CTS |
| 54 | PD4 | bidirectional | General-purpose I/O or remappable to FSMC_NOE or USART2_RTS |
| 55 | VSS_3 | power_in | Ground supply for digital circuits |
| 56 | VDD_3 | power_in | Main power supply (2.0 to 3.6 V) for core and I/Os |
| 57 | PD5 | bidirectional | General-purpose I/O or remappable to FSMC_NWE or USART2_TX |
| 58 | PD6 | bidirectional | General-purpose I/O or remappable to FSMC_NWAIT or USART2_RX |
| 59 | PD7 | bidirectional | General-purpose I/O or remappable to FSMC_NE1 or USART2_CK; FSMC not available in LQFP64 |
| 60 | PB10 | bidirectional | General-purpose I/O or remappable to I2C2_SCL/USART3_TX or TIM2_CH3 |
| 61 | PB11 | bidirectional | General-purpose I/O or remappable to I2C2_SDA/USART3_RX or TIM2_CH4 |
| 62 | PB12 | bidirectional | General-purpose I/O or remappable to SPI2_NSS/I2S2_WS/I2C2_SMBA/USART3_CK/TIM1_BKIN |
| 63 | VSS_4 | power_in | Ground supply for digital circuits |
| 64 | VDD_4 | power_in | Main power supply (2.0 to 3.6 V) for core and I/Os |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-64(10x10) |
| Category | Embedded Processors & Controllers |
| Pins | 64 |
CAD (KiCad official)
- Symbol:
STM32F103RCT6 - Footprint:
Package_QFP:LQFP-64_10x10mm_P0.5mm - 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files:
stm32f103rct6-etched.step/stm32f103rct6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32f103rct6.step/stm32f103rct6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (144 pp, sha256
c9b21d3e41aa42a0, retrieved 2026-09-24, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).