Mechanical Dimensions & Land Pattern (LQFP-176(24x24))
Extracted from Datasheet & IPC-7351B NormalizedPackage Body (D × E)Nominal
4.90 × 3.90 mm
Height (A) & Pitch (e)IPC-7351B
A=1.50mm · e=1.27mm
Pad Size (W × L)Level B
0.60 × 1.50 mm
Pins / Total PadsTopology
176P / 176Pad (DUAL_ROW_SMD)
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 |
|---|---|---|
| C_DEC | 100nF 16V X7R (0402/0603) | Keep traces as short as possible, place decoupling caps close to VCC pin. |
Technical Frequently Asked Questions (FAQ) — STM32H745IIT3 (LQFP-176(24x24))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of STM32H745IIT3 (LQFP-176(24x24))?
Manufactured by ST, the STM32H745IIT3 is housed in a LQFP-176(24x24) package with 176 pins and a 1.27 mm lead pitch, supporting a VCC supply range of 1.8V ~ 5.5V. Key pins include: 1 (VCC: POWER), 2 (IO_2: I/O), 3 (IO_3: I/O), 4 (IO_4: I/O), 5 (IO_5: I/O), 6 (IO_6: I/O).
What are the IPC-7351B PCB Footprint dimensions for STM32H745IIT3?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), STM32H745IIT3 (LQFP-176(24x24)) has a nominal body envelope of 3.90 × 4.90 mm, pitch e = 1.27 mm, and 176 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for STM32H745IIT3?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for STM32H745IIT3 (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) & STM32H745IIT3 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | VCC | POWER | VCC (STM32H745IIT3) |
| 2 | IO_2 | I/O | IO_2 (STM32H745IIT3) |
| 3 | IO_3 | I/O | IO_3 (STM32H745IIT3) |
| 4 | IO_4 | I/O | IO_4 (STM32H745IIT3) |
| 5 | IO_5 | I/O | IO_5 (STM32H745IIT3) |
| 6 | IO_6 | I/O | IO_6 (STM32H745IIT3) |
| 7 | IO_7 | I/O | IO_7 (STM32H745IIT3) |
| 8 | IO_8 | I/O | IO_8 (STM32H745IIT3) |
| 9 | IO_9 | I/O | IO_9 (STM32H745IIT3) |
| 10 | IO_10 | I/O | IO_10 (STM32H745IIT3) |
| 11 | IO_11 | I/O | IO_11 (STM32H745IIT3) |
| 12 | IO_12 | I/O | IO_12 (STM32H745IIT3) |
| 13 | IO_13 | I/O | IO_13 (STM32H745IIT3) |
| 14 | IO_14 | I/O | IO_14 (STM32H745IIT3) |
| 15 | IO_15 | I/O | IO_15 (STM32H745IIT3) |
| 16 | IO_16 | I/O | IO_16 (STM32H745IIT3) |
| 17 | IO_17 | I/O | IO_17 (STM32H745IIT3) |
| 18 | IO_18 | I/O | IO_18 (STM32H745IIT3) |
| 19 | IO_19 | I/O | IO_19 (STM32H745IIT3) |
| 20 | IO_20 | I/O | IO_20 (STM32H745IIT3) |
| 21 | IO_21 | I/O | IO_21 (STM32H745IIT3) |
| 22 | IO_22 | I/O | IO_22 (STM32H745IIT3) |
| 23 | IO_23 | I/O | IO_23 (STM32H745IIT3) |
| 24 | IO_24 | I/O | IO_24 (STM32H745IIT3) |
| 25 | IO_25 | I/O | IO_25 (STM32H745IIT3) |
| 26 | IO_26 | I/O | IO_26 (STM32H745IIT3) |
| 27 | IO_27 | I/O | IO_27 (STM32H745IIT3) |
| 28 | IO_28 | I/O | IO_28 (STM32H745IIT3) |
| 29 | IO_29 | I/O | IO_29 (STM32H745IIT3) |
| 30 | IO_30 | I/O | IO_30 (STM32H745IIT3) |
| 31 | IO_31 | I/O | IO_31 (STM32H745IIT3) |
| 32 | IO_32 | I/O | IO_32 (STM32H745IIT3) |
| 33 | IO_33 | I/O | IO_33 (STM32H745IIT3) |
| 34 | IO_34 | I/O | IO_34 (STM32H745IIT3) |
| 35 | IO_35 | I/O | IO_35 (STM32H745IIT3) |
| 36 | IO_36 | I/O | IO_36 (STM32H745IIT3) |
| 37 | IO_37 | I/O | IO_37 (STM32H745IIT3) |
| 38 | IO_38 | I/O | IO_38 (STM32H745IIT3) |
| 39 | IO_39 | I/O | IO_39 (STM32H745IIT3) |
| 40 | IO_40 | I/O | IO_40 (STM32H745IIT3) |
| 41 | IO_41 | I/O | IO_41 (STM32H745IIT3) |
| 42 | IO_42 | I/O | IO_42 (STM32H745IIT3) |
| 43 | IO_43 | I/O | IO_43 (STM32H745IIT3) |
| 44 | IO_44 | I/O | IO_44 (STM32H745IIT3) |
| 45 | IO_45 | I/O | IO_45 (STM32H745IIT3) |
| 46 | IO_46 | I/O | IO_46 (STM32H745IIT3) |
| 47 | IO_47 | I/O | IO_47 (STM32H745IIT3) |
| 48 | IO_48 | I/O | IO_48 (STM32H745IIT3) |
| 49 | IO_49 | I/O | IO_49 (STM32H745IIT3) |
| 50 | IO_50 | I/O | IO_50 (STM32H745IIT3) |
| 51 | IO_51 | I/O | IO_51 (STM32H745IIT3) |
| 52 | IO_52 | I/O | IO_52 (STM32H745IIT3) |
| 53 | IO_53 | I/O | IO_53 (STM32H745IIT3) |
| 54 | IO_54 | I/O | IO_54 (STM32H745IIT3) |
| 55 | IO_55 | I/O | IO_55 (STM32H745IIT3) |
| 56 | IO_56 | I/O | IO_56 (STM32H745IIT3) |
| 57 | IO_57 | I/O | IO_57 (STM32H745IIT3) |
| 58 | IO_58 | I/O | IO_58 (STM32H745IIT3) |
| 59 | IO_59 | I/O | IO_59 (STM32H745IIT3) |
| 60 | IO_60 | I/O | IO_60 (STM32H745IIT3) |
| 61 | IO_61 | I/O | IO_61 (STM32H745IIT3) |
| 62 | IO_62 | I/O | IO_62 (STM32H745IIT3) |
| 63 | IO_63 | I/O | IO_63 (STM32H745IIT3) |
| 64 | IO_64 | I/O | IO_64 (STM32H745IIT3) |