Mechanical Dimensions & Land Pattern (LQFP-176(24x24))
Extracted from Datasheet & IPC-7351B NormalizedPackage Body (D × E)Nominal
24.00 × 24.00 mm
Height (A) & Pitch (e)IPC-7351B
A=1.60mm · e=0.50mm
Pad Size (W × L)Level B
0.30 × 1.25 mm
Pins / Total PadsTopology
176P / 176Pad (QUAD_ROW)
Recommended 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 LQFP-176(24x24) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — STM32H745IIT6 (LQFP-176(24x24))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of STM32H745IIT6 (LQFP-176(24x24))?
Manufactured by ST, the STM32H745IIT6 is housed in a LQFP-176(24x24) package with 176 pins and a 0.50 mm lead pitch. Key pins include: 1 (1: Multiplexed I/O & Peripheral Pin 1 (SPI)), 2 (2: Multiplexed I/O & Peripheral Pin 2 (General)), 3 (3: Multiplexed I/O & Peripheral Pin 3 (SPI)), 4 (4: Multiplexed I/O & Peripheral Pin 4 (SPI)), 5 (5: Multiplexed I/O & Peripheral Pin 5 (SPI)), 6 (6: Multiplexed I/O & Peripheral Pin 6 (General)).
What are the IPC-7351B PCB Footprint dimensions for STM32H745IIT6?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), STM32H745IIT6 (LQFP-176(24x24)) has a nominal body envelope of 24.00 × 24.00 mm, pitch e = 0.50 mm, and 176 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for STM32H745IIT6?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for STM32H745IIT6 (ST, LQFP-176(24x24)) 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 (176 pins) & STM32H745 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | 1 | Digital_IO | Signal terminal 1 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI4_SCK. Supported peripheral buses: SPI. |
| 2 | 2 | Digital_IO | Signal terminal 2 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 2. Supported peripheral buses: General. |
| 3 | 3 | Digital_IO | Signal terminal 3 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI4_NSS_SAI1FSA. Supported peripheral buses: SPI. |
| 4 | 4 | Digital_IO | Signal terminal 4 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI4_MISO. Supported peripheral buses: SPI. |
| 5 | 5 | Digital_IO | Signal terminal 5 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI4_MOSI_SAI1SDA. Supported peripheral buses: SPI. |
| 6 | 6 | Digital_IO | Signal terminal 6 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 6. Supported peripheral buses: General. |
| 7 | 7 | Digital_IO | Signal terminal 7 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 7. Supported peripheral buses: General. |
| 8 | 8 | Digital_IO | Signal terminal 8 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 8. Supported peripheral buses: General. |
| 9 | 9 | Digital_IO | Signal terminal 9 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 9. Supported peripheral buses: RTC/CLK. |
| 10 | 10 | Digital_IO | Signal terminal 10 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 10. Supported peripheral buses: RTC/CLK. |
| 11 | 11 | Digital_IO | Signal terminal 11 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 11. Supported peripheral buses: RTC/CLK. |
| 12 | 12 | Digital_IO | Signal terminal 12 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 12. Supported peripheral buses: General. |
| 13 | 13 | Digital_IO | Signal terminal 13 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 13. Supported peripheral buses: General. |
| 14 | 14 | Digital_IO | Signal terminal 14 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 14. Supported peripheral buses: General. |
| 15 | 15 | Digital_IO | Signal terminal 15 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 15. Supported peripheral buses: General. |
| 16 | 16 | Digital_IO | Signal terminal 16 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 16. Supported peripheral buses: General. |
| 17 | 17 | Digital_IO | Signal terminal 17 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 17. Supported peripheral buses: General. |
| 18 | - | Digital_IO | Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: I2C. |
| 19 | - | Digital_IO | Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: I2C. |
| 20 | - | Digital_IO | Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: I2C. |
| 21 | - | Digital_IO | Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: ADC. |
| 22 | - | Digital_IO | Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: ADC. |
| 23 | - | Digital_IO | Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: ADC. |
| 24 | 18 | Digital_IO | Signal terminal 18 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 18. Supported peripheral buses: General. |
| 25 | 19 | Digital_IO | Signal terminal 19 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 19. Supported peripheral buses: General. |
| 26 | 20 | Digital_IO | Signal terminal 20 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 20. Supported peripheral buses: ADC. |
| 27 | 21 | Digital_IO | Signal terminal 21 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 21. Supported peripheral buses: UART, ADC. |
| 28 | 22 | Digital_IO | Signal terminal 22 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI5_MISO. Supported peripheral buses: UART, SPI, ADC. |
| 29 | 23 | Digital_IO | Signal terminal 23 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI5_MOSI_SAI1FSB. Supported peripheral buses: UART, SPI, ADC. |
| 30 | 24 | Digital_IO | Signal terminal 24 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 24. Supported peripheral buses: ADC. |
| 31 | 25 | Digital_IO | Signal terminal 25 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 25. Supported peripheral buses: RTC/CLK. |
| 32 | 26 | Digital_IO | Signal terminal 26 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 26. Supported peripheral buses: RTC/CLK. |
| 33 | 27 | Digital_IO | Signal terminal 27 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 27. Supported peripheral buses: General. |
| 34 | 28 | Digital_IO | Signal terminal 28 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 28. Supported peripheral buses: ADC. |
| 35 | 29 | Digital_IO | Signal terminal 29 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_MOSI. Supported peripheral buses: SPI, I2C, ADC, RTC/CLK. |
| 36 | PC2_C | Digital_IO | Signal terminal PC2_C (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC2_C. Supported peripheral buses: General. |
| 37 | PC3_C | Digital_IO | Signal terminal PC3_C (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC3_C. Supported peripheral buses: General. |
| 38 | 34 | Digital_IO | Signal terminal 34 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 34. Supported peripheral buses: General. |
| 39 | 35 | Digital_IO | Signal terminal 35 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 35. Supported peripheral buses: General. |
| 40 | 36 | Digital_IO | Signal terminal 36 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 36. Supported peripheral buses: General. |
| 41 | 37 | Digital_IO | Signal terminal 37 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 37. Supported peripheral buses: UART, SPI, ADC, PWM. |
| 42 | 38 | Digital_IO | Signal terminal 38 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 38. Supported peripheral buses: UART, ADC, PWM. |
| 43 | 39 | Digital_IO | Signal terminal 39 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 39. Supported peripheral buses: UART, SPI, ADC, PWM. |
| 44 | - | Digital_IO | Signal terminal - (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: -. Supported peripheral buses: General. |
| 45 | - | Digital_IO | Signal terminal - (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: -. Supported peripheral buses: General. |
| 46 | 40 | Digital_IO | Signal terminal 40 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 40. Supported peripheral buses: UART, ADC, PWM. |
| 47 | 41 | Digital_IO | Signal terminal 41 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 41. Supported peripheral buses: General. |
| 48 | 42 | Digital_IO | Signal terminal 42 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 42. Supported peripheral buses: General. |
| 49 | 43 | Digital_IO | Signal terminal 43 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_NSS, SPI3_NSS, SPI6_NSS. Supported peripheral buses: UART, SPI, ADC, DAC. |
| 50 | 44 | Digital_IO | Signal terminal 44 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_SCK, SPI6_SCK. Supported peripheral buses: SPI, ADC, DAC, PWM. |
| 51 | 45 | Digital_IO | Signal terminal 45 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MISO, SPI6_MISO. Supported peripheral buses: SPI, ADC. |
| 52 | 46 | Digital_IO | Signal terminal 46 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_MOSI, SPI6_MOSI. Supported peripheral buses: SPI, ADC, PWM. |
| 53 | 47 | Digital_IO | Signal terminal 47 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 47. Supported peripheral buses: UART, ADC. |
| 54 | 48 | Digital_IO | Signal terminal 48 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 48. Supported peripheral buses: UART, ADC. |
| 55 | 49 | Digital_IO | Signal terminal 49 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 49. Supported peripheral buses: UART, ADC, PWM. |
| 56 | 50 | Digital_IO | Signal terminal 50 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 50. Supported peripheral buses: ADC, PWM. |
| 57 | 51 | Digital_IO | Signal terminal 51 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI3_MOSI. Supported peripheral buses: SPI, I2C, RTC/CLK. |
| 58 | 52 | Digital_IO | Signal terminal 52 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI5_MOSI_SAI2SDB. Supported peripheral buses: SPI, ADC. |
| 59 | - | Digital_IO | Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: ADC. |
| 60 | - | Digital_IO | Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: I2C, ADC. |
| 61 | 53 | Digital_IO | Signal terminal 53 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 53. Supported peripheral buses: I2C, ADC. |
| 62 | 54 | Digital_IO | Signal terminal 54 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 54. Supported peripheral buses: I2C. |
| 63 | - | Digital_IO | Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: General. |
| 64 | 55 | Digital_IO | Signal terminal 55 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 55. Supported peripheral buses: General. |