Mechanical Dimensions & Land Pattern (UFBGA-100)
Extracted from Datasheet & IPC-7351B NormalizedRecommended Companion BOM & Drop-In Equivalents
Passive external components per reference schematic and 1:1 pin-compatible alternatives| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| N/A BOM | Per application circuit UFBGA-100 | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — STM32L433VCI6 (UFBGA-100)
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of STM32L433VCI6 (UFBGA-100)?
Manufactured by ST, the STM32L433VCI6 is housed in a UFBGA-100 package with 100 pins and a 0.50 mm lead pitch, supporting a VCC supply range of 1.71 V to 3.6 V. Key pins include: A1 (PE3: Multiplexed I/O & Peripheral Pin PE3 (General)), A2 (PE1: Multiplexed I/O & Peripheral Pin PE1 (General)), A3 (PB8: Multiplexed I/O & Peripheral Pin PB8 (I2C)), A4 (PH3 - BOOT0: Multiplexed I/O & Peripheral Pin PH3 - BOOT0 (General)), A5 (PD7: Multiplexed I/O & Peripheral Pin PD7 (UART)), A6 (PD5: Multiplexed I/O & Peripheral Pin PD5 (UART)).
What are the IPC-7351B PCB Footprint dimensions for STM32L433VCI6?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), STM32L433VCI6 (UFBGA-100) has a nominal body envelope of 7.00 × 7.00 mm, pitch e = 0.50 mm, and 100 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for STM32L433VCI6?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for STM32L433VCI6 (ST, UFBGA-100) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.
Static Reference Appendix: Pinout Table (100 pins) & STM32L433 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| A1 | PE3 | Digital_IO | Signal terminal PE3 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PE3. Supported peripheral buses: General. |
| A2 | PE1 | Digital_IO | Signal terminal PE1 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PE1. Supported peripheral buses: General. |
| A3 | PB8 | Digital_IO | Signal terminal PB8 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PB8. Supported peripheral buses: I2C. |
| A4 | PH3 - BOOT0 | Digital_IO | Signal terminal PH3 - BOOT0 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PH3 - BOOT0. Supported peripheral buses: General. |
| A5 | PD7 | Digital_IO | Signal terminal PD7 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PD7. Supported peripheral buses: UART. |
| A6 | PD5 | Digital_IO | Signal terminal PD5 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PD5. Supported peripheral buses: UART. |
| A7 | PB4 (NJTRST) | Digital_IO | Signal terminal PB4 (NJTRST) (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C3_SDA, SPI1_MISO, SPI3_MISO. Supported peripheral buses: UART, SPI, I2C, SWD/JTAG. |
| A8 | PB3 (JTDO - TRACE SWO) | Digital_IO | Signal terminal PB3 (JTDO - TRACE SWO) (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_SCK, SPI3_SCK. Supported peripheral buses: UART, SPI, PWM, SWD/JTAG. |
| A9 | PA15 (JTDI) | Digital_IO | Signal terminal PA15 (JTDI) (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_NSS, SPI3_NSS. Supported peripheral buses: UART, SPI, SWD/JTAG. |
| A10 | PA14 (JTCK - SWCLK) | Digital_IO | Signal terminal PA14 (JTCK - SWCLK) (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SMBA. Supported peripheral buses: I2C, SWD/JTAG. |
| A11 | PA13 (JTMS - SWDIO) | Digital_IO | Signal terminal PA13 (JTMS - SWDIO) (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA13 (JTMS - SWDIO). Supported peripheral buses: SWD/JTAG. |
| A12 | PA12 | Digital_IO | Signal terminal PA12 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MOSI. Supported peripheral buses: UART, SPI, CAN. |
| B1 | PE4 | Digital_IO | Signal terminal PE4 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PE4. Supported peripheral buses: General. |
| B2 | PE2 | Digital_IO | Signal terminal PE2 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PE2. Supported peripheral buses: General. |
| B3 | PB9 | Digital_IO | Signal terminal PB9 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_NSS. Supported peripheral buses: SPI, CAN. |
| B4 | PB7 | Digital_IO | Signal terminal PB7 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SDA. Supported peripheral buses: UART, I2C. |
| B5 | PB6 | Digital_IO | Signal terminal PB6 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SCL. Supported peripheral buses: UART, I2C. |
| B6 | PD6 | Digital_IO | Signal terminal PD6 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PD6. Supported peripheral buses: UART, I2C. |
| B7 | PD4 | Digital_IO | Signal terminal PD4 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_MOSI. Supported peripheral buses: UART, SPI. |
| B8 | PD3 | Digital_IO | Signal terminal PD3 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_MISO. Supported peripheral buses: UART, SPI. |
| B9 | PD1 | Digital_IO | Signal terminal PD1 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_SCK. Supported peripheral buses: SPI, CAN. |
| B10 | PC12 | Digital_IO | Signal terminal PC12 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI3_MOSI. Supported peripheral buses: UART, SPI. |
| B11 | PC10 | Digital_IO | Signal terminal PC10 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI3_SCK. Supported peripheral buses: UART, SPI. |
| B12 | PA11 | Digital_IO | Signal terminal PA11 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MISO. Supported peripheral buses: UART, SPI, PWM, CAN. |
| C1 | PC13 | Digital_IO | Signal terminal PC13 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PC13. Supported peripheral buses: RTC/CLK. |
| C2 | PE5 | Digital_IO | Signal terminal PE5 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PE5. Supported peripheral buses: SPI. |
| C3 | PE0 | Digital_IO | Signal terminal PE0 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PE0. Supported peripheral buses: General. |
| C4 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| C5 | PB5 | Digital_IO | Signal terminal PB5 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SMBA, SPI1_MOSI, SPI3_MOSI. Supported peripheral buses: UART, SPI, I2C. |
| C8 | PD2 | Digital_IO | Signal terminal PD2 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PD2. Supported peripheral buses: UART. |
| C9 | PD0 | Digital_IO | Signal terminal PD0 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_NSS. Supported peripheral buses: SPI, CAN. |
| C10 | PC11 | Digital_IO | Signal terminal PC11 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI3_MISO. Supported peripheral buses: UART, SPI. |
| C11 | VDD USB | Power_In | Primary positive power supply input (VDD USB) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| C12 | PA10 | Digital_IO | Signal terminal PA10 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SDA. Supported peripheral buses: USB, UART, I2C, PWM. |
| D1 | PC14 - OSC32_ IN(PC14) | Digital_IO | Signal terminal PC14 - OSC32_ IN(PC14) (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PC14 - OSC32_ IN(PC14). Supported peripheral buses: RTC/CLK. |
| D2 | PE6 | Digital_IO | Signal terminal PE6 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PE6. Supported peripheral buses: I2C, RTC/CLK. |
| D3 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| D10 | PA9 | Digital_IO | Signal terminal PA9 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SCL. Supported peripheral buses: UART, I2C, PWM. |
| D11 | PA8 | Digital_IO | Signal terminal PA8 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA8. Supported peripheral buses: UART, SPI, RTC/CLK. |
| D12 | PC9 | Digital_IO | Signal terminal PC9 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PC9. Supported peripheral buses: USB. |
| E1 | IOE1 | Digital_IO | General Purpose Digital I/O Pin IOE1 |
| E2 | VBAT | Power_In | Primary positive power supply input (VBAT) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| E3 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| E10 | PC8 | Digital_IO | Signal terminal PC8 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PC8. Supported peripheral buses: General. |
| E11 | PC7 | Digital_IO | Signal terminal PC7 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PC7. Supported peripheral buses: General. |
| E12 | PC6 | Digital_IO | Signal terminal PC6 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PC6. Supported peripheral buses: General. |
| F1 | PH0 - OSC_ IN(PH0) | Digital_IO | Signal terminal PH0 - OSC_ IN(PH0) (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PH0 - OSC_ IN(PH0). Supported peripheral buses: RTC/CLK. |
| F2 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| F11 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| F12 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| G1 | PH1 - OSC_ OUT (PH1) | Digital_IO | Signal terminal PH1 - OSC_ OUT (PH1) (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PH1 - OSC_ OUT (PH1). Supported peripheral buses: RTC/CLK. |
| G2 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| G11 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| G12 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| H1 | PC0 | Digital_IO | Signal terminal PC0 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C3_SCL. Supported peripheral buses: I2C, ADC. |
| H2 | NRST | Digital_IO | Active-low hardware reset terminal (NRST): pulling this pin Low resets the processor core and peripherals. |
| H3 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| H10 | PD15 | Digital_IO | Signal terminal PD15 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PD15. Supported peripheral buses: General. |
| H11 | PD14 | Digital_IO | Signal terminal PD14 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PD14. Supported peripheral buses: General. |
| H12 | PD13 | Digital_IO | Signal terminal PD13 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PD13. Supported peripheral buses: General. |
| J1 | VSSA | GND | 0V electrical ground return terminal (VSSA) for internal core logic, I/O drivers, and analog sub-blocks. |
| J2 | PC1 | Digital_IO | Signal terminal PC1 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C3_SDA. Supported peripheral buses: I2C, ADC. |
| J3 | PC2 | Digital_IO | Signal terminal PC2 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_MISO. Supported peripheral buses: SPI, ADC. |
| J10 | PD12 | Digital_IO | Signal terminal PD12 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PD12. Supported peripheral buses: UART. |












