![STM32H745IIT3 (LQFP-176(24x24)) — Figure 6. LQFP144 pinout [LQFP-144(20x20)]](/api/v1/assets/C730192/extracted/figures/p55_fig01.png)
![STM32H745IIT3 (LQFP-176(24x24)) — Figure 70. LQFP144 package outline [LQFP-144(20x20)]](/api/v1/assets/C730192/extracted/figures/p230_fig01.png)
![STM32H745IIT3 (LQFP-176(24x24)) — Figure 71. LQFP144 package recommended footprint [LQFP-144(20x20)]](/api/v1/assets/C730192/extracted/figures/p232_fig01.png)
LQFP-144(20x20) · 144P
Synchronized Pinout (Symbol / 2D / 3D) (176/176)
Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D| Pin | Symbol | Type | Function (EN) |
|---|---|---|---|
| 1 | 1 | I/O | Multiplexed I/O & Peripheral Pin 1 (SPI) |
| 2 | 2 | I/O | Multiplexed I/O & Peripheral Pin 2 (General) |
| 3 | 3 | I/O | Multiplexed I/O & Peripheral Pin 3 (SPI) |
| 4 | 4 | I/O | Multiplexed I/O & Peripheral Pin 4 (SPI) |
| 5 | 5 | I/O | Multiplexed I/O & Peripheral Pin 5 (SPI) |
| 6 | 6 | I/O | Multiplexed I/O & Peripheral Pin 6 (General) |
| 7 | 7 | I/O | Multiplexed I/O & Peripheral Pin 7 (General) |
| 8 | 8 | I/O | Multiplexed I/O & Peripheral Pin 8 (General) |
| 9 | 9 | I/O | Multiplexed I/O & Peripheral Pin 9 (RTC/CLK) |
| 10 | 10 | I/O | Multiplexed I/O & Peripheral Pin 10 (RTC/CLK) |
| 11 | 11 | I/O | Multiplexed I/O & Peripheral Pin 11 (RTC/CLK) |
| 12 | 12 | I/O | Multiplexed I/O & Peripheral Pin 12 (General) |
| 13 | 13 | I/O | Multiplexed I/O & Peripheral Pin 13 (General) |
| 14 | 14 | I/O | Multiplexed I/O & Peripheral Pin 14 (General) |
| 15 | 15 | I/O | Multiplexed I/O & Peripheral Pin 15 (General) |
| 16 | 16 | I/O | Multiplexed I/O & Peripheral Pin 16 (General) |
| 17 | 17 | I/O | Multiplexed I/O & Peripheral Pin 17 (General) |
| 18 | - | I/O | Multiplexed I/O & Peripheral Pin - (I2C) |
| 19 | - | I/O | Multiplexed I/O & Peripheral Pin - (I2C) |
| 20 | - | I/O | Multiplexed I/O & Peripheral Pin - (I2C) |
| 21 | - | I/O | Multiplexed I/O & Peripheral Pin - (ADC) |
| 22 | - | I/O | Multiplexed I/O & Peripheral Pin - (ADC) |
| 23 | - | I/O | Multiplexed I/O & Peripheral Pin - (ADC) |
| 24 | 18 | I/O | Multiplexed I/O & Peripheral Pin 18 (General) |
| 25 | 19 | I/O | Multiplexed I/O & Peripheral Pin 19 (General) |
| 26 | 20 | I/O | Multiplexed I/O & Peripheral Pin 20 (ADC) |
| 27 | 21 | I/O | Multiplexed I/O & Peripheral Pin 21 (UART, ADC) |
| 28 | 22 | I/O | Multiplexed I/O & Peripheral Pin 22 (UART, SPI, ADC) |
| 29 | 23 | I/O | Multiplexed I/O & Peripheral Pin 23 (UART, SPI, ADC) |
| 30 | 24 | I/O | Multiplexed I/O & Peripheral Pin 24 (ADC) |
| 31 | 25 | I/O | Multiplexed I/O & Peripheral Pin 25 (RTC/CLK) |
| 32 | 26 | I/O | Multiplexed I/O & Peripheral Pin 26 (RTC/CLK) |
| 33 | 27 | I/O | Multiplexed I/O & Peripheral Pin 27 (General) |
| 34 | 28 | I/O | Multiplexed I/O & Peripheral Pin 28 (ADC) |
| 35 | 29 | I/O | Multiplexed I/O & Peripheral Pin 29 (SPI, I2C, ADC, RTC/CLK) |
| 36 | PC2_C | I/O | Multiplexed I/O & Peripheral Pin PC2_C (General) |
| 37 | PC3_C | I/O | Multiplexed I/O & Peripheral Pin PC3_C (General) |
| 38 | 34 | I/O | Multiplexed I/O & Peripheral Pin 34 (General) |
| 39 | 35 | I/O | Multiplexed I/O & Peripheral Pin 35 (General) |
| 40 | 36 | I/O | Multiplexed I/O & Peripheral Pin 36 (General) |
| 41 | 37 | I/O | Multiplexed I/O & Peripheral Pin 37 (UART, SPI, ADC, PWM) |
| 42 | 38 | I/O | Multiplexed I/O & Peripheral Pin 38 (UART, ADC, PWM) |
| 43 | 39 | I/O | Multiplexed I/O & Peripheral Pin 39 (UART, SPI, ADC, PWM) |
| 44 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 45 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 46 | 40 | I/O | Multiplexed I/O & Peripheral Pin 40 (UART, ADC, PWM) |
| 47 | 41 | I/O | Multiplexed I/O & Peripheral Pin 41 (General) |
| 48 | 42 | I/O | Multiplexed I/O & Peripheral Pin 42 (General) |
| 49 | 43 | I/O | Multiplexed I/O & Peripheral Pin 43 (UART, SPI, ADC, DAC) |
| 50 | 44 | I/O | Multiplexed I/O & Peripheral Pin 44 (SPI, ADC, DAC, PWM) |
| 51 | 45 | I/O | Multiplexed I/O & Peripheral Pin 45 (SPI, ADC) |
| 52 | 46 | I/O | Multiplexed I/O & Peripheral Pin 46 (SPI, ADC, PWM) |
| 53 | 47 | I/O | Multiplexed I/O & Peripheral Pin 47 (UART, ADC) |
| 54 | 48 | I/O | Multiplexed I/O & Peripheral Pin 48 (UART, ADC) |
| 55 | 49 | I/O | Multiplexed I/O & Peripheral Pin 49 (UART, ADC, PWM) |
| 56 | 50 | I/O | Multiplexed I/O & Peripheral Pin 50 (ADC, PWM) |
| 57 | 51 | I/O | Multiplexed I/O & Peripheral Pin 51 (SPI, I2C, RTC/CLK) |
| 58 | 52 | I/O | Multiplexed I/O & Peripheral Pin 52 (SPI, ADC) |
| 59 | - | I/O | Multiplexed I/O & Peripheral Pin - (ADC) |
| 60 | - | I/O | Multiplexed I/O & Peripheral Pin - (I2C, ADC) |
| 61 | 53 | I/O | Multiplexed I/O & Peripheral Pin 53 (I2C, ADC) |
| 62 | 54 | I/O | Multiplexed I/O & Peripheral Pin 54 (I2C) |
| 63 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 64 | 55 | I/O | Multiplexed I/O & Peripheral Pin 55 (General) |
| 65 | 56 | I/O | Multiplexed I/O & Peripheral Pin 56 (General) |
| 66 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 67 | 57 | I/O | Multiplexed I/O & Peripheral Pin 57 (UART) |
| 68 | 58 | I/O | Multiplexed I/O & Peripheral Pin 58 (UART, PWM) |
| 69 | 59 | I/O | Multiplexed I/O & Peripheral Pin 59 (UART, PWM) |
| 70 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 71 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 72 | 60 | I/O | Multiplexed I/O & Peripheral Pin 60 (UART, PWM) |
| 73 | 61 | I/O | Multiplexed I/O & Peripheral Pin 61 (SPI, PWM) |
| 74 | 62 | I/O | Multiplexed I/O & Peripheral Pin 62 (SPI, PWM) |
| 75 | 63 | I/O | Multiplexed I/O & Peripheral Pin 63 (SPI, PWM) |
| 76 | 64 | I/O | Multiplexed I/O & Peripheral Pin 64 (PWM) |
| 77 | 65 | I/O | Multiplexed I/O & Peripheral Pin 65 (General) |
| 78 | 66 | I/O | Multiplexed I/O & Peripheral Pin 66 (UART, SPI, PWM) |
| 79 | 67 | I/O | Multiplexed I/O & Peripheral Pin 67 (UART, I2C, PWM) |
| 80 | 68 | I/O | Multiplexed I/O & Peripheral Pin 68 (General) |
| 81 | 69 | I/O | Multiplexed I/O & Peripheral Pin 69 (General) |
| 82 | 70 | I/O | Multiplexed I/O & Peripheral Pin 70 (General) |
| 83 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 84 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 85 | 72 | I/O | Multiplexed I/O & Peripheral Pin 72 (UART, SPI, I2C) |
| 86 | 73 | I/O | Multiplexed I/O & Peripheral Pin 73 (UART, SPI, PWM) |
| 87 | 74 | I/O | Multiplexed I/O & Peripheral Pin 74 (UART, SPI, PWM) |
| 88 | 75 | I/O | Multiplexed I/O & Peripheral Pin 75 (UART, SPI, PWM, RTC/CLK) |
| 89 | 76 | I/O | Multiplexed I/O & Peripheral Pin 76 (UART, SPI) |
| 90 | 77 | I/O | Multiplexed I/O & Peripheral Pin 77 (UART) |
| 91 | 78 | I/O | Multiplexed I/O & Peripheral Pin 78 (UART) |
| 92 | 79 | I/O | Multiplexed I/O & Peripheral Pin 79 (General) |
| 93 | 80 | I/O | Multiplexed I/O & Peripheral Pin 80 (General) |
| 94 | 81 | I/O | Multiplexed I/O & Peripheral Pin 81 (UART, SPI, I2C) |
| 95 | 82 | I/O | Multiplexed I/O & Peripheral Pin 82 (UART) |
| 96 | 83 | I/O | Multiplexed I/O & Peripheral Pin 83 (SPI, PWM) |
| 97 | 84 | I/O | Multiplexed I/O & Peripheral Pin 84 (UART, PWM) |
| 98 | 85 | I/O | Multiplexed I/O & Peripheral Pin 85 (UART, PWM) |
| 99 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 100 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 101 | - | I/O | Multiplexed I/O & Peripheral Pin - (UART, PWM) |
| 102 | - | I/O | Multiplexed I/O & Peripheral Pin - (UART, PWM) |
| 103 | - | I/O | Multiplexed I/O & Peripheral Pin - (SPI, PWM) |
| 104 | - | I/O | Multiplexed I/O & Peripheral Pin - (SPI, PWM) |
| 105 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 106 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 107 | - | I/O | Multiplexed I/O & Peripheral Pin - (SPI, PWM) |
| 108 | - | I/O | Multiplexed I/O & Peripheral Pin - (SPI, PWM) |
| 109 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 110 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 111 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 112 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 113 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 114 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 115 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 116 | 86 | I/O | Multiplexed I/O & Peripheral Pin 86 (General) |
| 117 | 87 | I/O | Multiplexed I/O & Peripheral Pin 87 (UART) |
| 118 | 88 | I/O | Multiplexed I/O & Peripheral Pin 88 (UART) |
| 119 | 89 | I/O | Multiplexed I/O & Peripheral Pin 89 (General) |
| 120 | 90 | I/O | Multiplexed I/O & Peripheral Pin 90 (General) |
| 121 | 91 | I/O | Multiplexed I/O & Peripheral Pin 91 (General) |
| 122 | 93 | I/O | Multiplexed I/O & Peripheral Pin 93 (PWM) |
| 123 | 94 | I/O | Multiplexed I/O & Peripheral Pin 94 (UART, PWM) |
| 124 | 95 | I/O | Multiplexed I/O & Peripheral Pin 95 (UART, PWM) |
| 125 | 96 | I/O | Multiplexed I/O & Peripheral Pin 96 (PWM, RTC/CLK) |
| 126 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 127 | 97 | I/O | Multiplexed I/O & Peripheral Pin 97 (UART, RTC/CLK) |
| 128 | 98 | I/O | Multiplexed I/O & Peripheral Pin 98 (UART, SPI, I2C, PWM) |
| 129 | 99 | I/O | Multiplexed I/O & Peripheral Pin 99 (UART, PWM) |
| 130 | 100 | I/O | Multiplexed I/O & Peripheral Pin 100 (UART, SPI, PWM) |
| 131 | 101 | I/O | Multiplexed I/O & Peripheral Pin 101 (UART, SPI) |
| 132 | 102 | I/O | Multiplexed I/O & Peripheral Pin 102 (SWD/JTAG) |
| 133 | 103 | I/O | Multiplexed I/O & Peripheral Pin 103 (General) |
| 134 | 104 | I/O | Multiplexed I/O & Peripheral Pin 104 (General) |
| 135 | 105 | I/O | Multiplexed I/O & Peripheral Pin 105 (General) |
| 136 | 106 | I/O | Multiplexed I/O & Peripheral Pin 106 (General) |
| 137 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 138 | 107 | I/O | Multiplexed I/O & Peripheral Pin 107 (SWD/JTAG) |
| 139 | 108 | I/O | Multiplexed I/O & Peripheral Pin 108 (UART, SPI, SWD/JTAG) |
| 140 | 109 | I/O | Multiplexed I/O & Peripheral Pin 109 (UART, SPI) |
| 141 | 110 | I/O | Multiplexed I/O & Peripheral Pin 110 (UART, SPI) |
| 142 | 111 | I/O | Multiplexed I/O & Peripheral Pin 111 (UART, SPI) |
| 143 | 112 | I/O | Multiplexed I/O & Peripheral Pin 112 (UART, SPI) |
| 144 | 113 | I/O | Multiplexed I/O & Peripheral Pin 113 (General) |
| 145 | 114 | I/O | Multiplexed I/O & Peripheral Pin 114 (UART) |
| 146 | 115 | I/O | Multiplexed I/O & Peripheral Pin 115 (UART, SPI) |
| 147 | 116 | I/O | Multiplexed I/O & Peripheral Pin 116 (UART) |
| 148 | 117 | I/O | Multiplexed I/O & Peripheral Pin 117 (UART) |
| 149 | 120 | I/O | Multiplexed I/O & Peripheral Pin 120 (UART, SPI, I2C) |
| 150 | 121 | I/O | Multiplexed I/O & Peripheral Pin 121 (UART, SPI) |
| 151 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 152 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 153 | 122 | I/O | Multiplexed I/O & Peripheral Pin 122 (UART, SPI) |
| 154 | 123 | I/O | Multiplexed I/O & Peripheral Pin 123 (SPI) |
| 155 | 124 | I/O | Multiplexed I/O & Peripheral Pin 124 (SPI) |
| 156 | 125 | I/O | Multiplexed I/O & Peripheral Pin 125 (UART, SPI) |
| 157 | 126 | I/O | Multiplexed I/O & Peripheral Pin 126 (UART, SPI) |
| 158 | 127 | I/O | Multiplexed I/O & Peripheral Pin 127 (UART, SPI) |
| 159 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 160 | - | I/O | Multiplexed I/O & Peripheral Pin - (General) |
| 161 | - | I/O | Multiplexed I/O & Peripheral Pin - (UART, SPI) |
| 162 | 130 | I/O | Multiplexed I/O & Peripheral Pin 130 (UART, SPI, PWM, SWD/JTAG) |
| 163 | 131 | I/O | Multiplexed I/O & Peripheral Pin 131 (UART, SPI, PWM, SWD/JTAG) |
| 164 | 132 | I/O | Multiplexed I/O & Peripheral Pin 132 (SPI, I2C) |
| 165 | 133 | I/O | Multiplexed I/O & Peripheral Pin 133 (UART, I2C, PWM) |
| 166 | 134 | I/O | Multiplexed I/O & Peripheral Pin 134 (UART, I2C, PWM) |
| 167 | 135 | I/O | Multiplexed I/O & Peripheral Pin 135 (General) |
| 168 | 136 | I/O | Multiplexed I/O & Peripheral Pin 136 (UART, I2C) |
| 169 | 137 | I/O | Multiplexed I/O & Peripheral Pin 137 (UART, SPI, I2C) |
| 170 | 138 | I/O | Multiplexed I/O & Peripheral Pin 138 (UART) |
| 171 | 139 | I/O | Multiplexed I/O & Peripheral Pin 139 (UART) |
| 172 | 140 | I/O | Multiplexed I/O & Peripheral Pin 140 (General) |
| 173 | 141 | I/O | Multiplexed I/O & Peripheral Pin 141 (General) |
| 174 | 142 | I/O | Multiplexed I/O & Peripheral Pin 142 (General) |
| 175 | 143 | I/O | Multiplexed I/O & Peripheral Pin 143 (General) |
| 176 | 144 | I/O | Multiplexed I/O & Peripheral Pin 144 (General) |
PIN 1 1
I/OMultiplexed I/O & Peripheral Pin 1 (SPI)
Design note: PE2 | Alt: TRACECLK SAI1 CK1 ,_ , SPI4_SCK , SAI1_MCLKA_ , SAI4_MCLKA_ , QUADSPI_BK1IO2_ , SAI4_CK1 , ETH_MIITXD3_ , FMC_A23EVENTOUT ,
IPC-7351B Solder Density & Span C/G/Z Tuner
Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings + 19 Extracted Figures)
Read the original datasheet PDF directly or click any drawing to view fullscreen1. Realistic 3D PackageREPRESENTATIVE
Detailed solid 3D bodyExpand ›
2. Standard Pinout (Top View)CLEANROOM PINOUT
True package pinout (176 pins)Expand ›
3. Original Datasheet PinoutPDF PINOUT
Uncropped datasheet pin diagramExpand ›
4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS
LQFP-176(24x24) · 24.00×24.00mm · Pitch 0.50mmExpand ›
5. Recommended Land PatternLAND PATTERN
IPC-7351B Footprint (176 Pads)Expand ›
6. Application SchematicSCHEMATIC
Typical Application SchematicExpand ›
Original Datasheet Pinouts & Technical Drawings (19 figures · Page 1/2)
Showing 1–12 of 19 uncropped original figures for STM32H745
P20 · p20_fig01EXACT PACKAGE
P56 · p56_fig01EXACT PACKAGE
P234 · p234_fig01EXACT PACKAGE
P236 · p236_fig01EXACT PACKAGE
P1 · p01_fig01881×605px
P106 · p106_fig011751×2064px
P191 · p191_fig011546×1182px
P191 · p191_fig021546×692px
P240 · p240_fig011546×1169px
P55 · p55_fig01EXACT PACKAGE
P230 · p230_fig01EXACT PACKAGE
P232 · p232_fig01EXACT PACKAGE
Page 1 / 2 (19 extracted figures)
Technical Specifications & Part Details (STM32H745IIT3)
Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)Detailed Overview:STM32H745IIT3 (LQFP-176(24x24)) is a 176-pin embedded microcontroller unit (mcu) featuring a 24.00 × 24.00 × 1.60 mm mechanical envelope (lead pitch e = 0.50 mm). Rated for 3.0V ~ 3.6V (Typ 3.3V) supply operation across -40°C ~ +85°C (Industrial Grade) with integrated USB, SPI, I2C, I2S, ADC, PWM, SDIO, JTAG / SWD, IrDA, DAC, RTC/CLK, SWD/JTAG, UART interfaces.
Operating Supply VoltageV_CC / V_DD
3.0V ~ 3.6V (Typ 3.3V)
Place 100nF + 10µF X7R decoupling capacitors < 2mm from supply pins
Ambient Operating TemperatureT_A
-40°C ~ +85°C (Industrial Grade)
Industrial temperature grade; T_J(max) = +125°C
Clock / RF Operating Frequencyf_CLK / f_RF
480MHz
Extracted from authoritative PDF specification tables
Current & Power RatingI_OUT / I_CC
I_GPIO(max) = ±20 mA / pin | I_VDD(total) ≤ 150 mA
110 5V-tolerant (FT) pins detected
Package Envelope (D × E × A)D × E × A
24.00 × 24.00 × 1.60 mm (A1=0.10 mm)
Package family: LQFP (LQFP-176(24x24))
Pin Count & Lead PitchN / e
176 Pins | Pitch e = 0.50 mm (19.7 mil)
Normalized to Center-to-Center Span C per IPC-7351B
Integrated Peripheral InterfacesBuses
USB, SPI, I2C, I2S, ADC, PWM, SDIO, JTAG / SWD, IrDA, DAC, RTC/CLK, SWD/JTAG, UART
Cross-linked with 4D Pinout & Schematic Symbol
Reflow & Moisture SensitivityIPC / MSL
IPC-7351B Level B | J-STD-020 (Peak 260°C) | MSL-3
60% windowed solder paste stencil on thermal EPAD
Engineering Safety Alert: Boot Strapping Pin Alert (135): Do not force conflicting external pull-ups/pull-downs during POR reset.
Engineering Safety Alert: Connect exposed thermal pad (if present) to internal ground plane via 0.3mm stitched thermal vias.
5-Point Standards Verification
Automated compliance checks prior to exportIEEE-315 Symbol176 auto-grouped pins
IPC-7351B Land Pattern176 pads · Pitch 0.50mm
IPC-7525 60% Solder PasteReflow 1:1 Standard
DFM Rules JLCPCB / PCBWayMin pad clearance: 0.25mm
3D STEP AP214 & GLBAligned coordinate origin (0,0,0)
Hardware Verification & Community Engineering Reviews
Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet5.00 PCB Verified
IPC-7351B
Select package variant or sibling MPN sharing this datasheetFamily Variants & Same Datasheet Chips — STM32H745 (13)
LQFP-176(24x24) · 176P
LQFP-176(24x24) · 176P
LQFP-176(24x24) · 176P
UFBGA-201 · 201P
UFBGA-201 · 201P
UFBGA-201 · 201P
LQFP-208(28x28) · 208P
TFBGA-265 · 265P
TFBGA-265 · 265P
TFBGA-265 · 265P
TFBGA-265(14x14) · 265P
TFBGA-265(14x14) · 265P
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) — 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 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 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 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 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) & 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. |