STM32H745ZIT3 (LQFP-144(20x20)) — Schematic Symbol, IPC-7351B Footprint & 3D STEP Model

Q: What is the Pinout and operating voltage specification of STM32H745ZIT3 (LQFP-144(20x20))?

Manufactured by ST, the STM32H745ZIT3 is housed in a LQFP-144(20x20) package with 144 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)).

Q: What are the IPC-7351B PCB Footprint dimensions for STM32H745ZIT3?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), STM32H745ZIT3 (LQFP-144(20x20)) has a nominal body envelope of 20.00 × 20.00 mm, pitch e = 0.50 mm, and 144 copper pads.

Q: Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for STM32H745ZIT3?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for STM32H745ZIT3 (ST, LQFP-144(20x20)) 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.

1. SYMBOL

2. 2D FOOTPRINT

3. 3D CAD MODEL

Package Body: 20.00mm × 20.00mm · Pitch: 0.50mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (144/144)

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	-	I/O	Multiplexed I/O & Peripheral Pin - (RTC/CLK)
10	9	I/O	Multiplexed I/O & Peripheral Pin 9 (RTC/CLK)
11	10	I/O	Multiplexed I/O & Peripheral Pin 10 (RTC/CLK)
12	11	I/O	Multiplexed I/O & Peripheral Pin 11 (RTC/CLK)
13	-	I/O	Multiplexed I/O & Peripheral Pin - (UART)
14	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
15	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
16	12	I/O	Multiplexed I/O & Peripheral Pin 12 (General)
17	13	I/O	Multiplexed I/O & Peripheral Pin 13 (General)
18	14	I/O	Multiplexed I/O & Peripheral Pin 14 (General)
19	15	I/O	Multiplexed I/O & Peripheral Pin 15 (General)
20	16	I/O	Multiplexed I/O & Peripheral Pin 16 (General)
21	17	I/O	Multiplexed I/O & Peripheral Pin 17 (General)
22	-	I/O	Multiplexed I/O & Peripheral Pin - (I2C)
23	-	I/O	Multiplexed I/O & Peripheral Pin - (I2C)
24	-	I/O	Multiplexed I/O & Peripheral Pin - (I2C)
25	-	I/O	Multiplexed I/O & Peripheral Pin - (ADC)
26	-	I/O	Multiplexed I/O & Peripheral Pin - (ADC)
27	-	I/O	Multiplexed I/O & Peripheral Pin - (ADC)
28	18	I/O	Multiplexed I/O & Peripheral Pin 18 (General)
29	19	I/O	Multiplexed I/O & Peripheral Pin 19 (General)
30	20	I/O	Multiplexed I/O & Peripheral Pin 20 (ADC)
31	21	I/O	Multiplexed I/O & Peripheral Pin 21 (UART, ADC)
32	22	I/O	Multiplexed I/O & Peripheral Pin 22 (UART, SPI, ADC)
33	23	I/O	Multiplexed I/O & Peripheral Pin 23 (UART, SPI, ADC)
34	24	I/O	Multiplexed I/O & Peripheral Pin 24 (ADC)
35	25	I/O	Multiplexed I/O & Peripheral Pin 25 (RTC/CLK)
36	26	I/O	Multiplexed I/O & Peripheral Pin 26 (RTC/CLK)
37	27	I/O	Multiplexed I/O & Peripheral Pin 27 (General)
38	28	I/O	Multiplexed I/O & Peripheral Pin 28 (ADC)
39	29	I/O	Multiplexed I/O & Peripheral Pin 29 (SPI, I2C, ADC, RTC/CLK)
40	PA3	I/O	Multiplexed I/O & Peripheral Pin PA3 (General)
41	VSS	GND	Ground Reference Pin (VSS)
42	34	I/O	Multiplexed I/O & Peripheral Pin 34 (General)
43	35	I/O	Multiplexed I/O & Peripheral Pin 35 (General)
44	36	I/O	Multiplexed I/O & Peripheral Pin 36 (General)
45	37	I/O	Multiplexed I/O & Peripheral Pin 37 (UART, SPI, ADC, PWM)
46	38	I/O	Multiplexed I/O & Peripheral Pin 38 (UART, ADC, PWM)
47	39	I/O	Multiplexed I/O & Peripheral Pin 39 (UART, SPI, ADC, PWM)
48	-	I/O	Multiplexed I/O & Peripheral Pin - (SPI, ADC)
49	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
50	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
51	-	I/O	Multiplexed I/O & Peripheral Pin - (ADC)
52	-	I/O	Multiplexed I/O & Peripheral Pin - (I2C, ADC)
53	-	I/O	Multiplexed I/O & Peripheral Pin - (I2C, ADC)
54	40	I/O	Multiplexed I/O & Peripheral Pin 40 (UART, ADC, PWM)
55	41	I/O	Multiplexed I/O & Peripheral Pin 41 (General)
56	42	I/O	Multiplexed I/O & Peripheral Pin 42 (General)
57	43	I/O	Multiplexed I/O & Peripheral Pin 43 (UART, SPI, ADC, DAC)
58	44	I/O	Multiplexed I/O & Peripheral Pin 44 (SPI, ADC, DAC, PWM)
59	45	I/O	Multiplexed I/O & Peripheral Pin 45 (SPI, ADC)
60	46	I/O	Multiplexed I/O & Peripheral Pin 46 (SPI, ADC, PWM)
61	47	I/O	Multiplexed I/O & Peripheral Pin 47 (UART, ADC)
62	48	I/O	Multiplexed I/O & Peripheral Pin 48 (UART, ADC)
63	49	I/O	Multiplexed I/O & Peripheral Pin 49 (UART, ADC, PWM)
64	50	I/O	Multiplexed I/O & Peripheral Pin 50 (ADC, PWM)
65	51	I/O	Multiplexed I/O & Peripheral Pin 51 (SPI, I2C, RTC/CLK)
66	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
67	52	I/O	Multiplexed I/O & Peripheral Pin 52 (SPI, ADC)
68	-	I/O	Multiplexed I/O & Peripheral Pin - (ADC)
69	-	I/O	Multiplexed I/O & Peripheral Pin - (I2C, ADC)
70	53	I/O	Multiplexed I/O & Peripheral Pin 53 (I2C, ADC)
71	54	I/O	Multiplexed I/O & Peripheral Pin 54 (I2C)
72	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
73	55	I/O	Multiplexed I/O & Peripheral Pin 55 (General)
74	56	I/O	Multiplexed I/O & Peripheral Pin 56 (General)
75	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
76	57	I/O	Multiplexed I/O & Peripheral Pin 57 (UART)
77	58	I/O	Multiplexed I/O & Peripheral Pin 58 (UART, PWM)
78	59	I/O	Multiplexed I/O & Peripheral Pin 59 (UART, PWM)
79	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
80	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
81	60	I/O	Multiplexed I/O & Peripheral Pin 60 (UART, PWM)
82	61	I/O	Multiplexed I/O & Peripheral Pin 61 (SPI, PWM)
83	62	I/O	Multiplexed I/O & Peripheral Pin 62 (SPI, PWM)
84	63	I/O	Multiplexed I/O & Peripheral Pin 63 (SPI, PWM)
85	64	I/O	Multiplexed I/O & Peripheral Pin 64 (PWM)
86	65	I/O	Multiplexed I/O & Peripheral Pin 65 (General)
87	66	I/O	Multiplexed I/O & Peripheral Pin 66 (UART, SPI, PWM)
88	67	I/O	Multiplexed I/O & Peripheral Pin 67 (UART, I2C, PWM)
89	68	I/O	Multiplexed I/O & Peripheral Pin 68 (General)
90	69	I/O	Multiplexed I/O & Peripheral Pin 69 (General)
91	70	I/O	Multiplexed I/O & Peripheral Pin 70 (General)
92	-	I/O	Multiplexed I/O & Peripheral Pin - (I2C)
93	-	I/O	Multiplexed I/O & Peripheral Pin - (I2C)
94	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
95	-	I/O	Multiplexed I/O & Peripheral Pin - (I2C)
96	-	I/O	Multiplexed I/O & Peripheral Pin - (PWM)
97	-	I/O	Multiplexed I/O & Peripheral Pin - (PWM)
98	-	I/O	Multiplexed I/O & Peripheral Pin - (PWM)
99	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
100	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
101	72	I/O	Multiplexed I/O & Peripheral Pin 72 (UART, SPI, I2C)
102	73	I/O	Multiplexed I/O & Peripheral Pin 73 (UART, SPI, PWM)
103	74	I/O	Multiplexed I/O & Peripheral Pin 74 (UART, SPI, PWM)
104	75	I/O	Multiplexed I/O & Peripheral Pin 75 (UART, SPI, PWM, RTC/CLK)
105	76	I/O	Multiplexed I/O & Peripheral Pin 76 (UART, SPI)
106	77	I/O	Multiplexed I/O & Peripheral Pin 77 (UART)
107	78	I/O	Multiplexed I/O & Peripheral Pin 78 (UART)
108	79	I/O	Multiplexed I/O & Peripheral Pin 79 (General)
109	80	I/O	Multiplexed I/O & Peripheral Pin 80 (General)
110	81	I/O	Multiplexed I/O & Peripheral Pin 81 (UART, SPI, I2C)
111	82	I/O	Multiplexed I/O & Peripheral Pin 82 (UART)
112	83	I/O	Multiplexed I/O & Peripheral Pin 83 (SPI, PWM)
113	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
114	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
115	84	I/O	Multiplexed I/O & Peripheral Pin 84 (UART, PWM)
116	85	I/O	Multiplexed I/O & Peripheral Pin 85 (UART, PWM)
117	-	I/O	Multiplexed I/O & Peripheral Pin - (PWM)
118	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
119	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
120	-	I/O	Multiplexed I/O & Peripheral Pin - (General)
121	-	I/O	Multiplexed I/O & Peripheral Pin - (UART, PWM)
122	-	I/O	Multiplexed I/O & Peripheral Pin - (UART, 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	VDD	Power	Power Supply Input (VDD — 3.3V VDD (Max 4.0V))

PIN 1 1

I/O

Multiplexed 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

Extracted Drawings Gallery (6 Standard Drawings + 23 Extracted Figures)

Read the original datasheet PDF directly or click any drawing to view fullscreen

1. Realistic 3D PackageREPRESENTATIVE

STM32H745ZIT3 (LQFP-144(20x20)) - 1. Realistic 3D Package

Detailed solid 3D bodyExpand ›

2. Standard Pinout (Top View)CLEANROOM PINOUT

STM32H745ZIT3 (LQFP-144(20x20)) - 2. Standard Pinout (Top View)

True package pinout (144 pins)Expand ›

3. Original Datasheet PinoutPDF PINOUT

STM32H745ZIT3 (LQFP-144(20x20)) - 3. Original Datasheet Pinout

Uncropped datasheet pin diagramExpand ›

4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS

STM32H745ZIT3 (LQFP-144(20x20)) - 4. Package Dimensions (D×E×A)

LQFP-144(20x20) · 20.00×20.00mm · Pitch 0.50mmExpand ›

5. Recommended Land PatternLAND PATTERN

STM32H745ZIT3 (LQFP-144(20x20)) - 5. Recommended Land Pattern

IPC-7351B Footprint (144 Pads)Expand ›

6. Application SchematicSCHEMATIC

STM32H745ZIT3 (LQFP-144(20x20)) - 6. Application Schematic

Typical Application SchematicExpand ›

Original Datasheet Pinouts & Technical Drawings (23 figures · Page 1/2)

Showing 1–12 of 23 uncropped original figures for STM32H745

P55 · p55_fig01EXACT PACKAGE

Figure 6. LQFP144 pinout

P230 · p230_fig01EXACT PACKAGE

Figure 70. LQFP144 package outline

P232 · p232_fig01EXACT PACKAGE

Figure 71. LQFP144 package recommended footprint

P1 · p01_fig01881×605px

• 1.62 to 3.6 V application supply and I/Os

P55 · p55_fig01P55

Datasheet Page 55 (p55_fig01)

P106 · p106_fig011751×2064px

Figure 13. Power supply scheme

P106 · p106_fig01P106

Datasheet Page 106 (p106_fig01)

P191 · p191_fig011546×1182px

Figure 42. ADC accuracy characteristics (12-bit resolution) 4096 [1LSB IDEAL = 4095 4094 4093

P191 · p191_fig021546×692px

Figure 43. Typical connection diagram using the ADC

P230 · p230_fig01P230

Datasheet Page 230 (p230_fig01)

P232 · p232_fig01P232

Datasheet Page 232 (p232_fig01)

P240 · p240_fig011546×1169px

Figure 77. LQFP208 package recommended footprint

Page 1 / 2 (23 extracted figures)

Technical Specifications & Part Details (STM32H745ZIT3)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)

Embedded Microcontroller Unit (MCU)

Detailed Overview:STM32H745ZIT3 (LQFP-144(20x20)) is a 144-pin embedded microcontroller unit (mcu) featuring a 20.00 × 20.00 × 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

91 5V-tolerant (FT) pins detected

Package Envelope (D × E × A)D × E × A

20.00 × 20.00 × 1.60 mm (A1=0.10 mm)

Package family: LQFP (LQFP-144(20x20))

Pin Count & Lead PitchN / e

144 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: Verify Pin-1 chamfer orientation on Top Silkscreen prior to SMT pick-and-place assembly.

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 export

5/5 PASS

IEEE-315 Symbol144 auto-grouped pins

IPC-7351B Land Pattern144 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 Datasheet

5.00 PCB Verified

IPC-7351B

Family Variants & Same Datasheet Chips — STM32H745 (15)

Select package variant or sibling MPN sharing this datasheet

LQFP-144(20x20) · 144P

STM32H745ZGT6

ST·LQFP-144(20x20)

IPC-7351B

144P20.0×20.0×1.60mmP=0.5mm

STM32H745 (LQFP-144(20x20))

LQFP-144(20x20) · 144P

STM32H745ZIT3

ST·LQFP-144(20x20)

IPC-7351B

144P20.0×20.0×1.60mmP=0.5mm

STM32H745 (LQFP-144(20x20))

LQFP-176(24x24) · 176P

STM32H745IGT6

ST·LQFP-176(24x24)

IPC-7351B

176P24.0×24.0×1.60mmP=0.5mm

STM32H745 (LQFP-176(24x24))

LQFP-176(24x24) · 176P

STM32H745IIT3

ST·LQFP-176(24x24)

IPC-7351B

176P24.0×24.0×1.60mmP=0.5mm

STM32H745 (LQFP-176(24x24))

LQFP-176(24x24) · 176P

STM32H745IIT6

ST·LQFP-176(24x24)

IPC-7351B

176P24.0×24.0×1.60mmP=0.5mm

STM32H745 (LQFP-176(24x24))

UFBGA-201 · 201P

STM32H745IGK6

ST·UFBGA-201

IPC-7351B

201P10.0×10.0×0.50mmP=0.65mm

STM32H745 (UFBGA-201)

UFBGA-201 · 201P

STM32H745IIK3

ST·UFBGA-201

IPC-7351B

201P10.0×10.0×0.60mmP=0.65mm

STM32H745 (UFBGA-201)

UFBGA-201 · 201P

STM32H745IIK6

ST·UFBGA-201

IPC-7351B

201P10.0×10.0×0.60mmP=0.65mm

STM32H745 (UFBGA-201)

LQFP-208(28x28) · 208P

STM32H745BGT6

ST·LQFP-208(28x28)

IPC-7351B

208P28.0×28.0×1.60mmP=0.5mm

STM32H745 (LQFP-208(28x28))

LQFP-208(28x28) · 208P

STM32H745BIT3

ST·LQFP-208(28x28)

IPC-7351B

208P28.0×28.0×1.60mmP=0.5mm

STM32H745 (LQFP-208(28x28))

TFBGA-265 · 265P

STM32H745XIH3

ST·TFBGA-265

IPC-7351B

265P14.0×14.0×1.03mmP=0.8mm

STM32H745 (TFBGA-265)

TFBGA-265 · 265P

STM32H745XIH6

ST·TFBGA-265

IPC-7351B

265P14.0×14.0×1.10mmP=0.8mm

STM32H745 (TFBGA-265)

TFBGA-265 · 265P

STM32H745XIH6U

ST·TFBGA-265

IPC-7351B

265P14.0×14.0×1.03mmP=0.8mm

STM32H745 (TFBGA-265)

TFBGA-265(14x14) · 265P

STM32H745XGH6

ST·TFBGA-265(14x14)

IPC-7351B

265P14.0×14.0×1.12mmP=0.8mm

STM32H745 (TFBGA-265(14x14))

TFBGA-265(14x14) · 265P

STM32H745XIH3TR

ST·TFBGA-265(14x14)

IPC-7351B

265P14.0×14.0×1.03mmP=0.8mm

STM32H745 (TFBGA-265(14x14))

Mechanical Dimensions & Land Pattern (LQFP-144(20x20))

Extracted from Datasheet & IPC-7351B Normalized

Package Body (D × E)Nominal

20.00 × 20.00 mm

Height (A) & Pitch (e)IPC-7351B

A=1.60mm · e=0.50mm

Pad Size (W × L)Level B

0.35 × 1.35 mm

Pins / Total PadsTopology

144P / 144Pad (QUAD_ROW)

Recommended Companion BOM & Drop-In Equivalents

Passive external components per reference schematic and 1:1 pin-compatible alternatives

DFM READY

Designator / Replacement MPN	Value / Package	Function & PCB Layout Rule
N/A BOM	Per application circuit LQFP-144(20x20)	Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — STM32H745ZIT3 (LQFP-144(20x20))

Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formats

IPC-7351B / IEEE-315

What is the Pinout and operating voltage specification of STM32H745ZIT3 (LQFP-144(20x20))?

Manufactured by ST, the STM32H745ZIT3 is housed in a LQFP-144(20x20) package with 144 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 STM32H745ZIT3?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), STM32H745ZIT3 (LQFP-144(20x20)) has a nominal body envelope of 20.00 × 20.00 mm, pitch e = 0.50 mm, and 144 copper pads.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for STM32H745ZIT3?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for STM32H745ZIT3 (ST, LQFP-144(20x20)) 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 (144 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	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: RTC/CLK.
10	9	Digital_IO	Signal terminal 9 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 9. Supported peripheral buses: RTC/CLK.
11	10	Digital_IO	Signal terminal 10 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 10. Supported peripheral buses: RTC/CLK.
12	11	Digital_IO	Signal terminal 11 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 11. Supported peripheral buses: RTC/CLK.
13	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: UART.
14	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: General.
15	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: General.
16	12	Digital_IO	Signal terminal 12 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 12. Supported peripheral buses: General.
17	13	Digital_IO	Signal terminal 13 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 13. Supported peripheral buses: General.
18	14	Digital_IO	Signal terminal 14 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 14. Supported peripheral buses: General.
19	15	Digital_IO	Signal terminal 15 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 15. Supported peripheral buses: General.
20	16	Digital_IO	Signal terminal 16 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 16. Supported peripheral buses: General.
21	17	Digital_IO	Signal terminal 17 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 17. Supported peripheral buses: General.
22	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: I2C.
23	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: I2C.
24	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: I2C.
25	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: ADC.
26	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: ADC.
27	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: ADC.
28	18	Digital_IO	Signal terminal 18 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 18. Supported peripheral buses: General.
29	19	Digital_IO	Signal terminal 19 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 19. Supported peripheral buses: General.
30	20	Digital_IO	Signal terminal 20 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 20. Supported peripheral buses: ADC.
31	21	Digital_IO	Signal terminal 21 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 21. Supported peripheral buses: UART, ADC.
32	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.
33	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.
34	24	Digital_IO	Signal terminal 24 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 24. Supported peripheral buses: ADC.
35	25	Digital_IO	Signal terminal 25 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 25. Supported peripheral buses: RTC/CLK.
36	26	Digital_IO	Signal terminal 26 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 26. Supported peripheral buses: RTC/CLK.
37	27	Digital_IO	Signal terminal 27 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 27. Supported peripheral buses: General.
38	28	Digital_IO	Signal terminal 28 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: 28. Supported peripheral buses: ADC.
39	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.
40	PA3	Digital_IO	Signal terminal PA3 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PA3. Supported peripheral buses: General.
41	VSS	GND	0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks.
42	34	Digital_IO	Signal terminal 34 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 34. Supported peripheral buses: General.
43	35	Digital_IO	Signal terminal 35 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 35. Supported peripheral buses: General.
44	36	Digital_IO	Signal terminal 36 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 36. Supported peripheral buses: General.
45	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.
46	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.
47	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.
48	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: SPI, ADC.
49	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: -. Supported peripheral buses: General.
50	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: -. Supported peripheral buses: General.
51	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: ADC.
52	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: I2C, ADC.
53	-	Digital_IO	Signal terminal - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: -. Supported peripheral buses: I2C, ADC.
54	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.
55	41	Digital_IO	Signal terminal 41 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 41. Supported peripheral buses: General.
56	42	Digital_IO	Signal terminal 42 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 42. Supported peripheral buses: General.
57	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.
58	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.
59	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.
60	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.
61	47	Digital_IO	Signal terminal 47 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 47. Supported peripheral buses: UART, ADC.
62	48	Digital_IO	Signal terminal 48 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 48. Supported peripheral buses: UART, ADC.
63	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.
64	50	Digital_IO	Signal terminal 50 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: 50. Supported peripheral buses: ADC, PWM.

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