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STM32L073V8T6
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.
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README.mdadded+136@@ -0,0 +1,136 @@+# STM32L073V8T6++**STMicroelectronics** · Microcontrollers (MCU/MPU/SOC) · LQFP-100(14x14)++STM32L073V8T6 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 | General purpose I/O, 5V tolerant, can be used as LCD segment 38 or external trigger input for TIM3. |+| 2 | PE3 | bidirectional | General purpose I/O, 5V tolerant, can be used as LCD segment 39 or TIM22 channel 1 input/output. |+| 3 | PE4 | bidirectional | General purpose I/O, 5V tolerant, can be used as TIM22 channel 2 or TIM3 channel 2. |+| 4 | PE5 | bidirectional | General purpose I/O, 5V tolerant, can be used as TIM21 channel 1 or TIM3 channel 3. |+| 5 | PE6 | bidirectional | General purpose I/O, 5V tolerant, can be used as TIM21 channel 2, TIM3 channel 4, or RTC tamper/wakeup input 3. |+| 6 | VLCD | power_in | Liquid crystal display external voltage supply pin for LCD controller. |+| 7 | PC13 | bidirectional | General purpose I/O, 5V tolerant, can be used for RTC tamper detection, RTC timestamp, or wakeup input 2. |+| 8 | PC14 | bidirectional | Crystal oscillator input pin (OSC32_IN) for 32.768 kHz external clock or general purpose I/O. |+| 9 | PC15 | bidirectional | Crystal oscillator output pin (OSC32_OUT) for 32.768 kHz external clock or general purpose I/O. |+| 10 | PH9 | bidirectional | General purpose I/O, 5V tolerant. |+| 11 | PH10 | bidirectional | General purpose I/O, 5V tolerant. |+| 12 | PH0 | bidirectional | Crystal oscillator input pin (OSC_IN) for 1 to 25 MHz external clock or USB clock recovery sync signal. |+| 13 | PH1 | bidirectional | Crystal oscillator output pin (OSC_OUT) for 1 to 25 MHz external clock. |+| 14 | NRST | bidirectional | System reset input pin with embedded weak pull-up resistor, 50 ns input filter. |+| 15 | PC0 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used as LPTIM input, LCD segment, touch sensing input, LPUART receive, I2C3 clock, or ADC channel 10. |+| 16 | PC1 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used as LPTIM output, LCD segment, touch sensing input, LPUART transmit, I2C3 data, or ADC channel 11. |+| 17 | PC2 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used as LPTIM input, LCD segment, SPI2 receive, or ADC channel 12. |+| 18 | PC3 | bidirectional | General purpose I/O, 5V tolerant, can be used as LPTIM external trigger, LCD segment, SPI2 transmit, or ADC channel 13. |+| 19 | VSSA | power_in | Analog ground reference pin, must be connected to same ground plane as VSS. |+| 20 | VREF- | power_in | Negative voltage reference input pin for ADC, typically connected to ground. |+| 21 | VREF+ | power_in | Positive voltage reference input pin for ADC, must be 1.65 V to VDDA. |+| 22 | VDDA | power_in | Analog supply voltage pin, 1.65 to 3.6 V, must be same voltage as VDD with max 300 mV difference. |+| 23 | PA0 | bidirectional | General purpose I/O, standard 3.3V, can be used for TIM2, touch sensing, USART handshake, or ADC channel 0 with comparator input. |+| 24 | PA1 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM2, LCD segment, touch sensing, USART handshake, or ADC channel 1 with comparator input. |+| 25 | PA2 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM21/TIM2, LCD segment, touch sensing, USART transmit, LPUART transmit, or ADC channel 2 with comparator input. |+| 26 | PA3 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM21/TIM2, LCD segment, touch sensing, USART receive, LPUART receive, or ADC channel 3 with comparator input. |+| 27 | VSS | power_in | Ground return pin for digital circuits. |+| 28 | VDD | power_in | Main digital supply voltage pin, 1.65 to 3.6 V (1.8 to 3.6 V with BOR enabled). |+| 29 | PA4 | bidirectional | General purpose I/O, standard 3.3V with reduced touch sensing sensitivity, can be used as SPI1 chip select, touch sensing, USART clock, or DAC channel 1 output with comparator input. |+| 30 | PA5 | bidirectional | General purpose I/O, standard 3.3V, can be used for SPI1 clock, TIM2, touch sensing, or DAC channel 2 output with comparator input. |+| 31 | PA6 | bidirectional | General purpose I/O, 5V tolerant, can be used for SPI1 receive, TIM3, LCD segment, touch sensing, LPUART handshake, or comparator 1 output. |+| 32 | PA7 | bidirectional | General purpose I/O, 5V tolerant, can be used for SPI1 transmit, TIM3, LCD segment, touch sensing, or comparator 2 output. |+| 33 | PC4 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 22, LPUART transmit, or ADC channel 14. |+| 34 | PC5 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 23, LPUART receive, touch sensing, or ADC channel 15. |+| 35 | PB0 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM3, LCD segment, touch sensing, LCD bias voltage output 3, or ADC channel 8 with voltage reference output. |+| 36 | PB1 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM3, LCD segment, LPUART handshake, or ADC channel 9 with voltage reference output. |+| 37 | PB2 | bidirectional | General purpose I/O, 5V tolerant, can be used for LPTIM output, touch sensing, I2C3 address masking, or LCD bias voltage output 1. |+| 38 | PE7 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 45 or USART5 clock/RTS. |+| 39 | PE8 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 46 or USART4 transmit. |+| 40 | PE9 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM2, LCD segment 47, or USART4 receive. |+| 41 | PE10 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM2 channel 2, LCD segment 40, or USART5 transmit. |+| 42 | PE11 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM2 channel 3, USART5 receive, or LCD bias voltage output 2. |+| 43 | PE12 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM2 channel 4, SPI1 chip select, or LCD bias voltage output 3. |+| 44 | PE13 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 41 or SPI1 clock. |+| 45 | PE14 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 42 or SPI1 receive. |+| 46 | PE15 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 43 or SPI1 transmit. |+| 47 | PB10 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 10, TIM2, touch sensing sync, LPUART, SPI2 clock, or I2C2 clock. |+| 48 | PB11 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 11, TIM2, touch sensing, LPUART receive/transmit, or I2C2 data. |+| 49 | VSS | power_in | Ground return pin for digital circuits. |+| 50 | VDD | power_in | Main digital supply voltage pin, 1.65 to 3.6 V (1.8 to 3.6 V with BOR enabled). |+| 51 | PB12 | bidirectional | General purpose I/O, 5V tolerant, can be used for SPI2 chip select, LCD segment 12, LPUART handshake, touch sensing, I2C2 address masking, or LCD bias voltage output 2. |+| 52 | PB13 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used for SPI2 clock, LCD segment 13, microcontroller clock output, touch sensing, LPUART handshake, or I2C2 clock. |+| 53 | PB14 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used for SPI2 receive, LCD segment 14, RTC clock output, touch sensing, LPUART handshake, or I2C2 data. |+| 54 | PB15 | bidirectional | General purpose I/O, 5V tolerant, can be used for SPI2 transmit, LCD segment 15, or RTC reference clock input. |+| 55 | PD8 | bidirectional | General purpose I/O, 5V tolerant, can be used for LPUART transmit or LCD segment 28. |+| 56 | PD9 | bidirectional | General purpose I/O, 5V tolerant, can be used for LPUART receive or LCD segment 29. |+| 57 | PD10 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 30. |+| 58 | PD11 | bidirectional | General purpose I/O, 5V tolerant, can be used for LPUART handshake or LCD segment 31. |+| 59 | PD12 | bidirectional | General purpose I/O, 5V tolerant, can be used for LPUART handshake or LCD segment 32. |+| 60 | PD13 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 33. |+| 61 | PD14 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 34. |+| 62 | PD15 | bidirectional | General purpose I/O, 5V tolerant, can be used for USB clock recovery sync or LCD segment 35. |+| 63 | PC6 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM22, LCD segment 24, TIM3, or touch sensing. |+| 64 | PC7 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM22, LCD segment 25, TIM3, or touch sensing. |+| 65 | PC8 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM22, LCD segment 26, TIM3, or touch sensing. |+| 66 | PC9 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used for TIM21, LCD segment 27, USB output enable, TIM3, touch sensing, or I2C3 data with comparator input. |+| 67 | PA8 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used for microcontroller clock output, LCD common 0, USB clock recovery, USART1 clock, or I2C3 clock. |+| 68 | PA9 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used for microcontroller clock output, LCD common 1, touch sensing, USART1 transmit, I2C1 clock, or I2C3 address masking. |+| 69 | PA10 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used for LCD common 2, touch sensing, USART1 receive, or I2C1 data. |+| 70 | PA11 | bidirectional | General purpose I/O, 5V tolerant, powered by VDD_USB, can be used for SPI1 receive, USB differential minus (DM), touch sensing, USART1 handshake, or comparator 1 output, maximum sink current 25 mA. |+| 71 | PA12 | bidirectional | General purpose I/O, 5V tolerant, powered by VDD_USB, can be used for SPI1 transmit, USB differential plus (DP), touch sensing, USART1 handshake, or comparator 2 output, maximum sink current 25 mA. |+| 72 | PA13 | bidirectional | General purpose I/O, 5V tolerant, can be used for serial wire debug input (SWDIO), USB output enable, or LPUART receive. |+| 73 | VDD | power_in | Main digital supply voltage pin, 1.65 to 3.6 V (1.8 to 3.6 V with BOR enabled). |+| 74 | VSS | power_in | Ground return pin for digital circuits. |+| 75 | VDD_USB | power_in | USB transceiver supply voltage pin, 3.0 to 3.6 V when USB is used, 1.65 to 3.6 V when USB is not used, powers PA11 and PA12. |+| 76 | PA14 | bidirectional | General purpose I/O, 5V tolerant, can be used for serial wire debug clock (SWCLK), USART2 transmit, or LPUART transmit. |+| 77 | PA15 | bidirectional | General purpose I/O, 5V tolerant, can be used for SPI1 chip select, LCD segment 17, TIM2, USART2 receive, or USART4 handshake. |+| 78 | PC10 | bidirectional | General purpose I/O, 5V tolerant, can be used for LPUART transmit, LCD common/segment multiplexed, or USART4 transmit. |+| 79 | PC11 | bidirectional | General purpose I/O, 5V tolerant, can be used for LPUART receive, LCD common/segment multiplexed, or USART4 receive. |+| 80 | PC12 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD common/segment multiplexed, USART5 transmit, or USART4 clock. |+| 81 | PD0 | bidirectional | General purpose I/O, 5V tolerant, can be used for TIM21 channel 1 or SPI2 chip select. |+| 82 | PD1 | bidirectional | General purpose I/O, 5V tolerant, can be used for SPI2 clock. |+| 83 | PD2 | bidirectional | General purpose I/O, 5V tolerant, can be used for LPUART handshake, LCD common/segment multiplexed, TIM3 external trigger, or USART5 receive. |+| 84 | PD3 | bidirectional | General purpose I/O, 5V tolerant, can be used for USART2 handshake, LCD segment 44, or SPI2 receive. |+| 85 | PD4 | bidirectional | General purpose I/O, 5V tolerant, can be used for USART2 handshake or SPI2 transmit. |+| 86 | PD5 | bidirectional | General purpose I/O, 5V tolerant, can be used for USART2 transmit. |+| 87 | PD6 | bidirectional | General purpose I/O, 5V tolerant, can be used for USART2 receive. |+| 88 | PD7 | bidirectional | General purpose I/O, 5V tolerant, can be used for USART2 clock or TIM21 channel 2. |+| 89 | PB3 | bidirectional | General purpose I/O, 5V tolerant, can be used for SPI1 clock, LCD segment 7, TIM2, touch sensing, USART1 handshake, USART5 transmit, or comparator 2 input minus. |+| 90 | PB4 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used for SPI1 receive, LCD segment 8, TIM3, touch sensing, TIM22, USART1 handshake, USART5 receive, I2C3 data, or comparator 2 input plus. |+| 91 | PB5 | bidirectional | General purpose I/O, 5V tolerant, can be used for SPI1 transmit, LCD segment 9, LPTIM, I2C1 address masking, TIM3/TIM22, USART1 clock, or USART5 clock with comparator 2 input plus. |+| 92 | PB6 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used for USART1 transmit, I2C1 clock, LPTIM external trigger, touch sensing, or comparator 2 input plus. |+| 93 | PB7 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used for USART1 receive, I2C1 data, LPTIM input, touch sensing, USART4 handshake, programmable voltage detector input, or comparator 2 input plus. |+| 94 | BOOT0 | input | Boot mode selection pin, 0 = boot from flash, 1 = boot from system memory or RAM, sampled during reset. |+| 95 | PB8 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used for LCD segment 16, touch sensing sync, or I2C1 clock. |+| 96 | PB9 | bidirectional | General purpose I/O, 5V tolerant FM+ capable, can be used for LCD common 3, touch sensing, I2C1 data, or SPI2 chip select. |+| 97 | PE0 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 36 or event output. |+| 98 | PE1 | bidirectional | General purpose I/O, 5V tolerant, can be used for LCD segment 37 or event output. |+| 99 | VSS | power_in | Ground return pin for digital circuits. |+| 100 | VDD | power_in | Main digital supply voltage pin, 1.65 to 3.6 V (1.8 to 3.6 V with BOR enabled). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | LQFP-100(14x14) |+| Category | Embedded Processors & Controllers |+| Pins | 100 |++## CAD (KiCad official)++- Symbol: `STM32L073V8T6`+- Footprint: `Package_QFP:LQFP-100_14x14mm_P0.5mm`+- 3D model: LQFP-100(14x14) (KiCad packages3D, STEP)+- 3D model files: `stm32l073v8t6-etched.step` / `stm32l073v8t6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32l073v8t6.step` / `stm32l073v8t6.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/8586184235741302784) (143 pp, sha256 `d18a133d6d1a71aa`, retrieved 2026-09-23, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-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).++[Datasheet PDF](docs/stm32l073v8t6-datasheet.pdf)
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Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "embedded processors & controllers",+ "stm32l073v8t6",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "stm32l073v8t6.kicad_sym",+ "stm32l073v8t6.kicad_mod",+ "stm32l073v8t6.glb",+ "stm32l073v8t6.step",+ "stm32l073v8t6.lbr",+ "docs/hero.png",+ "docs/stm32l073v8t6-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "STM32L073V8T6",+ "manufacturer": "STMicroelectronics",+ "package": "LQFP-100(14x14)",+ "pin_count": 100,+ "category": "Embedded Processors & Controllers",+ "subcategory": "Microcontrollers (MCU/MPU/SOC)",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586184235741302784",+ "parts": {+ "symbol": "stm32l073v8t6.kicad_sym",+ "footprint": "stm32l073v8t6.kicad_mod",+ "model_3d": "stm32l073v8t6-etched.glb",+ "model_3d_plain": "stm32l073v8t6.glb",+ "model_3d_step": "stm32l073v8t6-etched.step",+ "model_3d_step_plain": "stm32l073v8t6.step",+ "lbr": "stm32l073v8t6.lbr"+ },+ "distributor_links": {+ "lcsc": "C186742"+ },+ "pins": [+ {+ "number": "1",+ "name": "PE2",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used as LCD segment 38 or external trigger input for TIM3."+ },+ {+ "number": "2",+ "name": "PE3",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used as LCD segment 39 or TIM22 channel 1 input/output."+ },+ {+ "number": "3",+ "name": "PE4",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used as TIM22 channel 2 or TIM3 channel 2."+ },+ {+ "number": "4",+ "name": "PE5",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used as TIM21 channel 1 or TIM3 channel 3."+ },+ {+ "number": "5",+ "name": "PE6",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used as TIM21 channel 2, TIM3 channel 4, or RTC tamper/wakeup input 3."+ },+ {+ "number": "6",+ "name": "VLCD",+ "type": "power_in",+ "description": "Liquid crystal display external voltage supply pin for LCD controller."+ },+ {+ "number": "7",+ "name": "PC13",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for RTC tamper detection, RTC timestamp, or wakeup input 2."+ },+ {+ "number": "8",+ "name": "PC14",+ "type": "bidirectional",+ "description": "Crystal oscillator input pin (OSC32_IN) for 32.768 kHz external clock or general purpose I/O."+ },+ {+ "number": "9",+ "name": "PC15",+ "type": "bidirectional",+ "description": "Crystal oscillator output pin (OSC32_OUT) for 32.768 kHz external clock or general purpose I/O."+ },+ {+ "number": "10",+ "name": "PH9",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant."+ },+ {+ "number": "11",+ "name": "PH10",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant."+ },+ {+ "number": "12",+ "name": "PH0",+ "type": "bidirectional",+ "description": "Crystal oscillator input pin (OSC_IN) for 1 to 25 MHz external clock or USB clock recovery sync signal."+ },+ {+ "number": "13",+ "name": "PH1",+ "type": "bidirectional",+ "description": "Crystal oscillator output pin (OSC_OUT) for 1 to 25 MHz external clock."+ },+ {+ "number": "14",+ "name": "NRST",+ "type": "bidirectional",+ "description": "System reset input pin with embedded weak pull-up resistor, 50 ns input filter."+ },+ {+ "number": "15",+ "name": "PC0",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used as LPTIM input, LCD segment, touch sensing input, LPUART receive, I2C3 clock, or ADC channel 10."+ },+ {+ "number": "16",+ "name": "PC1",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used as LPTIM output, LCD segment, touch sensing input, LPUART transmit, I2C3 data, or ADC channel 11."+ },+ {+ "number": "17",+ "name": "PC2",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used as LPTIM input, LCD segment, SPI2 receive, or ADC channel 12."+ },+ {+ "number": "18",+ "name": "PC3",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used as LPTIM external trigger, LCD segment, SPI2 transmit, or ADC channel 13."+ },+ {+ "number": "19",+ "name": "VSSA",+ "type": "power_in",+ "description": "Analog ground reference pin, must be connected to same ground plane as VSS."+ },+ {+ "number": "20",+ "name": "VREF-",+ "type": "power_in",+ "description": "Negative voltage reference input pin for ADC, typically connected to ground."+ },+ {+ "number": "21",+ "name": "VREF+",+ "type": "power_in",+ "description": "Positive voltage reference input pin for ADC, must be 1.65 V to VDDA."+ },+ {+ "number": "22",+ "name": "VDDA",+ "type": "power_in",+ "description": "Analog supply voltage pin, 1.65 to 3.6 V, must be same voltage as VDD with max 300 mV difference."+ },+ {+ "number": "23",+ "name": "PA0",+ "type": "bidirectional",+ "description": "General purpose I/O, standard 3.3V, can be used for TIM2, touch sensing, USART handshake, or ADC channel 0 with comparator input."+ },+ {+ "number": "24",+ "name": "PA1",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM2, LCD segment, touch sensing, USART handshake, or ADC channel 1 with comparator input."+ },+ {+ "number": "25",+ "name": "PA2",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM21/TIM2, LCD segment, touch sensing, USART transmit, LPUART transmit, or ADC channel 2 with comparator input."+ },+ {+ "number": "26",+ "name": "PA3",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM21/TIM2, LCD segment, touch sensing, USART receive, LPUART receive, or ADC channel 3 with comparator input."+ },+ {+ "number": "27",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground return pin for digital circuits."+ },+ {+ "number": "28",+ "name": "VDD",+ "type": "power_in",+ "description": "Main digital supply voltage pin, 1.65 to 3.6 V (1.8 to 3.6 V with BOR enabled)."+ },+ {+ "number": "29",+ "name": "PA4",+ "type": "bidirectional",+ "description": "General purpose I/O, standard 3.3V with reduced touch sensing sensitivity, can be used as SPI1 chip select, touch sensing, USART clock, or DAC channel 1 output with comparator input."+ },+ {+ "number": "30",+ "name": "PA5",+ "type": "bidirectional",+ "description": "General purpose I/O, standard 3.3V, can be used for SPI1 clock, TIM2, touch sensing, or DAC channel 2 output with comparator input."+ },+ {+ "number": "31",+ "name": "PA6",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for SPI1 receive, TIM3, LCD segment, touch sensing, LPUART handshake, or comparator 1 output."+ },+ {+ "number": "32",+ "name": "PA7",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for SPI1 transmit, TIM3, LCD segment, touch sensing, or comparator 2 output."+ },+ {+ "number": "33",+ "name": "PC4",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 22, LPUART transmit, or ADC channel 14."+ },+ {+ "number": "34",+ "name": "PC5",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 23, LPUART receive, touch sensing, or ADC channel 15."+ },+ {+ "number": "35",+ "name": "PB0",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM3, LCD segment, touch sensing, LCD bias voltage output 3, or ADC channel 8 with voltage reference output."+ },+ {+ "number": "36",+ "name": "PB1",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM3, LCD segment, LPUART handshake, or ADC channel 9 with voltage reference output."+ },+ {+ "number": "37",+ "name": "PB2",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LPTIM output, touch sensing, I2C3 address masking, or LCD bias voltage output 1."+ },+ {+ "number": "38",+ "name": "PE7",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 45 or USART5 clock/RTS."+ },+ {+ "number": "39",+ "name": "PE8",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 46 or USART4 transmit."+ },+ {+ "number": "40",+ "name": "PE9",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM2, LCD segment 47, or USART4 receive."+ },+ {+ "number": "41",+ "name": "PE10",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM2 channel 2, LCD segment 40, or USART5 transmit."+ },+ {+ "number": "42",+ "name": "PE11",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM2 channel 3, USART5 receive, or LCD bias voltage output 2."+ },+ {+ "number": "43",+ "name": "PE12",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM2 channel 4, SPI1 chip select, or LCD bias voltage output 3."+ },+ {+ "number": "44",+ "name": "PE13",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 41 or SPI1 clock."+ },+ {+ "number": "45",+ "name": "PE14",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 42 or SPI1 receive."+ },+ {+ "number": "46",+ "name": "PE15",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 43 or SPI1 transmit."+ },+ {+ "number": "47",+ "name": "PB10",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 10, TIM2, touch sensing sync, LPUART, SPI2 clock, or I2C2 clock."+ },+ {+ "number": "48",+ "name": "PB11",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 11, TIM2, touch sensing, LPUART receive/transmit, or I2C2 data."+ },+ {+ "number": "49",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground return pin for digital circuits."+ },+ {+ "number": "50",+ "name": "VDD",+ "type": "power_in",+ "description": "Main digital supply voltage pin, 1.65 to 3.6 V (1.8 to 3.6 V with BOR enabled)."+ },+ {+ "number": "51",+ "name": "PB12",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for SPI2 chip select, LCD segment 12, LPUART handshake, touch sensing, I2C2 address masking, or LCD bias voltage output 2."+ },+ {+ "number": "52",+ "name": "PB13",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used for SPI2 clock, LCD segment 13, microcontroller clock output, touch sensing, LPUART handshake, or I2C2 clock."+ },+ {+ "number": "53",+ "name": "PB14",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used for SPI2 receive, LCD segment 14, RTC clock output, touch sensing, LPUART handshake, or I2C2 data."+ },+ {+ "number": "54",+ "name": "PB15",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for SPI2 transmit, LCD segment 15, or RTC reference clock input."+ },+ {+ "number": "55",+ "name": "PD8",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LPUART transmit or LCD segment 28."+ },+ {+ "number": "56",+ "name": "PD9",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LPUART receive or LCD segment 29."+ },+ {+ "number": "57",+ "name": "PD10",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 30."+ },+ {+ "number": "58",+ "name": "PD11",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LPUART handshake or LCD segment 31."+ },+ {+ "number": "59",+ "name": "PD12",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LPUART handshake or LCD segment 32."+ },+ {+ "number": "60",+ "name": "PD13",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 33."+ },+ {+ "number": "61",+ "name": "PD14",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 34."+ },+ {+ "number": "62",+ "name": "PD15",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for USB clock recovery sync or LCD segment 35."+ },+ {+ "number": "63",+ "name": "PC6",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM22, LCD segment 24, TIM3, or touch sensing."+ },+ {+ "number": "64",+ "name": "PC7",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM22, LCD segment 25, TIM3, or touch sensing."+ },+ {+ "number": "65",+ "name": "PC8",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM22, LCD segment 26, TIM3, or touch sensing."+ },+ {+ "number": "66",+ "name": "PC9",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used for TIM21, LCD segment 27, USB output enable, TIM3, touch sensing, or I2C3 data with comparator input."+ },+ {+ "number": "67",+ "name": "PA8",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used for microcontroller clock output, LCD common 0, USB clock recovery, USART1 clock, or I2C3 clock."+ },+ {+ "number": "68",+ "name": "PA9",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used for microcontroller clock output, LCD common 1, touch sensing, USART1 transmit, I2C1 clock, or I2C3 address masking."+ },+ {+ "number": "69",+ "name": "PA10",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used for LCD common 2, touch sensing, USART1 receive, or I2C1 data."+ },+ {+ "number": "70",+ "name": "PA11",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, powered by VDD_USB, can be used for SPI1 receive, USB differential minus (DM), touch sensing, USART1 handshake, or comparator 1 output, maximum sink current 25 mA."+ },+ {+ "number": "71",+ "name": "PA12",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, powered by VDD_USB, can be used for SPI1 transmit, USB differential plus (DP), touch sensing, USART1 handshake, or comparator 2 output, maximum sink current 25 mA."+ },+ {+ "number": "72",+ "name": "PA13",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for serial wire debug input (SWDIO), USB output enable, or LPUART receive."+ },+ {+ "number": "73",+ "name": "VDD",+ "type": "power_in",+ "description": "Main digital supply voltage pin, 1.65 to 3.6 V (1.8 to 3.6 V with BOR enabled)."+ },+ {+ "number": "74",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground return pin for digital circuits."+ },+ {+ "number": "75",+ "name": "VDD_USB",+ "type": "power_in",+ "description": "USB transceiver supply voltage pin, 3.0 to 3.6 V when USB is used, 1.65 to 3.6 V when USB is not used, powers PA11 and PA12."+ },+ {+ "number": "76",+ "name": "PA14",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for serial wire debug clock (SWCLK), USART2 transmit, or LPUART transmit."+ },+ {+ "number": "77",+ "name": "PA15",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for SPI1 chip select, LCD segment 17, TIM2, USART2 receive, or USART4 handshake."+ },+ {+ "number": "78",+ "name": "PC10",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LPUART transmit, LCD common/segment multiplexed, or USART4 transmit."+ },+ {+ "number": "79",+ "name": "PC11",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LPUART receive, LCD common/segment multiplexed, or USART4 receive."+ },+ {+ "number": "80",+ "name": "PC12",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD common/segment multiplexed, USART5 transmit, or USART4 clock."+ },+ {+ "number": "81",+ "name": "PD0",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for TIM21 channel 1 or SPI2 chip select."+ },+ {+ "number": "82",+ "name": "PD1",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for SPI2 clock."+ },+ {+ "number": "83",+ "name": "PD2",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LPUART handshake, LCD common/segment multiplexed, TIM3 external trigger, or USART5 receive."+ },+ {+ "number": "84",+ "name": "PD3",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for USART2 handshake, LCD segment 44, or SPI2 receive."+ },+ {+ "number": "85",+ "name": "PD4",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for USART2 handshake or SPI2 transmit."+ },+ {+ "number": "86",+ "name": "PD5",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for USART2 transmit."+ },+ {+ "number": "87",+ "name": "PD6",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for USART2 receive."+ },+ {+ "number": "88",+ "name": "PD7",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for USART2 clock or TIM21 channel 2."+ },+ {+ "number": "89",+ "name": "PB3",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for SPI1 clock, LCD segment 7, TIM2, touch sensing, USART1 handshake, USART5 transmit, or comparator 2 input minus."+ },+ {+ "number": "90",+ "name": "PB4",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used for SPI1 receive, LCD segment 8, TIM3, touch sensing, TIM22, USART1 handshake, USART5 receive, I2C3 data, or comparator 2 input plus."+ },+ {+ "number": "91",+ "name": "PB5",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for SPI1 transmit, LCD segment 9, LPTIM, I2C1 address masking, TIM3/TIM22, USART1 clock, or USART5 clock with comparator 2 input plus."+ },+ {+ "number": "92",+ "name": "PB6",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used for USART1 transmit, I2C1 clock, LPTIM external trigger, touch sensing, or comparator 2 input plus."+ },+ {+ "number": "93",+ "name": "PB7",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used for USART1 receive, I2C1 data, LPTIM input, touch sensing, USART4 handshake, programmable voltage detector input, or comparator 2 input plus."+ },+ {+ "number": "94",+ "name": "BOOT0",+ "type": "input",+ "description": "Boot mode selection pin, 0 = boot from flash, 1 = boot from system memory or RAM, sampled during reset."+ },+ {+ "number": "95",+ "name": "PB8",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used for LCD segment 16, touch sensing sync, or I2C1 clock."+ },+ {+ "number": "96",+ "name": "PB9",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant FM+ capable, can be used for LCD common 3, touch sensing, I2C1 data, or SPI2 chip select."+ },+ {+ "number": "97",+ "name": "PE0",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 36 or event output."+ },+ {+ "number": "98",+ "name": "PE1",+ "type": "bidirectional",+ "description": "General purpose I/O, 5V tolerant, can be used for LCD segment 37 or event output."+ },+ {+ "number": "99",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground return pin for digital circuits."+ },+ {+ "number": "100",+ "name": "VDD",+ "type": "power_in",+ "description": "Main digital supply voltage pin, 1.65 to 3.6 V (1.8 to 3.6 V with BOR enabled)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: LCD bias voltage outputs (LCD_VLCD1, LCD_VLCD2, LCD_VLCD3) are mentioned in additional functions on ; USB pins PA11 and PA12 are powered by VDD_USB instead of VDD; note 2 in datasheet indicates these pi; PA4 has reduced touch sensing sensitivity per note 1; datasheet recommends using it as sampling capa"+ ],+ "pages_sent": 143,+ "cost_usd": 1.3752,+ "at": "2026-09-23T06:32:28"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586184235741302784",+ "pages": 143,+ "sha256": "d18a133d6d1a71aa",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 100,+ "described": 100,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}