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STM32L151C6U6 (UFQFPN-48(7x7)) — Symbol, Footprint IPC-7351B & 3D STEP Model

STM32L151C6U6

STID: C1340933UFQFPN-48(7x7) · 49 Pins · Pitch 0.50mmIPC-7351B Verified5.0 (0)
SYNCHRONIZED 4D CROSS-PROBE MODETouch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
1. SYMBOL
U1 · STM32L151C6U6 (UFQFPN-48(7x7))1V (3) LCD2PC13 - WKUP23PC14 - OSC324PC15 - OSC325PH0 - OSC IN6PH1 - OSC_OU7NRST8VSSA9VDDA10PA0WKUP1 -11PA112PA213PA314PA415PA516PA617PA718PB019PB120PB221PB1022PB1123VSS_124VDD_125PB1249EP48VDD_347VSS_346PB945PB844BOOT043PB742PB641PB540PB439PB338PA1537PA1436VDD_235VSS_234PA1333PA1232PA1131PA1030PA929PA828PB1527PB1426PB13Grid Pitch = 2.54mm (IEEE-315)-17.8-12.7-7.6-2.52.57.612.717.838.133.027.922.917.812.77.62.5-2.5-7.6-12.7-17.8-22.9-27.9-33.0-38.1mm
2. 2D FOOTPRINT
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849E=7.00mm · Pitch e=0.50mmD=7.00mm-6-5-4-3-2-101234566543210-1-2-3-4-5-6mm
3. 3D CAD MODEL
Package Body: 7.00mm × 7.00mm · Pitch: 0.50mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (49/49)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
PinSymbolTypeFunction (EN)
1V (3) LCDI/OMultiplexed I/O & Peripheral Pin V (3) LCD (General)
2PC13 - WKUP2I/OMultiplexed I/O & Peripheral Pin PC13 - WKUP2 (RTC/CLK)
3PC14 - OSC32 IN(4)_I/OMultiplexed I/O & Peripheral Pin PC14 - OSC32 IN(4)_ (RTC/CLK)
4PC15 - OSC32 OUT (4)_I/OMultiplexed I/O & Peripheral Pin PC15 - OSC32 OUT (4)_ (RTC/CLK)
5PH0 - OSC IN(5)_I/OMultiplexed I/O & Peripheral Pin PH0 - OSC IN(5)_ (RTC/CLK)
6PH1 - OSC_OUTI/OMultiplexed I/O & Peripheral Pin PH1 - OSC_OUT (RTC/CLK)
7NRSTISystem Enable & Hardware Reset (NRST)
8VSSAGNDGround Reference Pin (VSSA)
9VDDAPowerPower Supply Input (VDDA — 3.3V VDD (Max 4.0V))
10PA0WKUP1 -I/OMultiplexed I/O & Peripheral Pin PA0WKUP1 - (UART, ADC, PWM)
11PA1I/OMultiplexed I/O & Peripheral Pin PA1 (UART, ADC)
12PA2I/OMultiplexed I/O & Peripheral Pin PA2 (UART, ADC)
13PA3I/OMultiplexed I/O & Peripheral Pin PA3 (UART, ADC)
14PA4I/OMultiplexed I/O & Peripheral Pin PA4 (UART, SPI, ADC, DAC)
15PA5I/OMultiplexed I/O & Peripheral Pin PA5 (SPI, ADC, DAC, PWM)
16PA6I/OMultiplexed I/O & Peripheral Pin PA6 (SPI, ADC)
17PA7I/OMultiplexed I/O & Peripheral Pin PA7 (SPI, ADC)
18PB0I/OMultiplexed I/O & Peripheral Pin PB0 (ADC)
19PB1I/OMultiplexed I/O & Peripheral Pin PB1 (ADC)
20PB2I/OMultiplexed I/O & Peripheral Pin PB2 (General)
21PB10I/OMultiplexed I/O & Peripheral Pin PB10 (UART, I2C)
22PB11I/OMultiplexed I/O & Peripheral Pin PB11 (UART, I2C)
23VSS_1GNDGround Reference Pin (VSS_1)
24VDD_1PowerPower Supply Input (VDD_1 — 3.3V VDD (Max 4.0V))
25PB12I/OMultiplexed I/O & Peripheral Pin PB12 (UART, SPI, I2C, ADC)
26PB13I/OMultiplexed I/O & Peripheral Pin PB13 (UART, SPI, ADC, PWM)
27PB14I/OMultiplexed I/O & Peripheral Pin PB14 (UART, SPI, ADC, PWM)
28PB15I/OMultiplexed I/O & Peripheral Pin PB15 (SPI, ADC, RTC/CLK)
29PA8I/OMultiplexed I/O & Peripheral Pin PA8 (UART, RTC/CLK)
30PA9I/OMultiplexed I/O & Peripheral Pin PA9 (UART)
31PA10I/OMultiplexed I/O & Peripheral Pin PA10 (UART)
32PA11I/OMultiplexed I/O & Peripheral Pin PA11 (USB, UART, SPI)
33PA12I/OMultiplexed I/O & Peripheral Pin PA12 (USB, UART, SPI)
34PA13I/OMultiplexed I/O & Peripheral Pin PA13 (SWD/JTAG)
35VSS_2GNDGround Reference Pin (VSS_2)
36VDD_2PowerPower Supply Input (VDD_2 — 3.3V VDD (Max 4.0V))
37PA14I/OMultiplexed I/O & Peripheral Pin PA14 (SWD/JTAG)
38PA15I/OMultiplexed I/O & Peripheral Pin PA15 (SPI, SWD/JTAG)
39PB3I/OMultiplexed I/O & Peripheral Pin PB3 (SPI, SWD/JTAG)
40PB4I/OMultiplexed I/O & Peripheral Pin PB4 (SPI, SWD/JTAG)
41PB5I/OMultiplexed I/O & Peripheral Pin PB5 (SPI, I2C)
42PB6I/OMultiplexed I/O & Peripheral Pin PB6 (UART, I2C)
43PB7I/OMultiplexed I/O & Peripheral Pin PB7 (UART, I2C)
44BOOT0IInput-Only Pin BOOT0 (General)
45PB8I/OMultiplexed I/O & Peripheral Pin PB8 (I2C)
46PB9I/OMultiplexed I/O & Peripheral Pin PB9 (I2C)
47VSS_3GNDGround Reference Pin (VSS_3)
48VDD_3PowerPower Supply Input (VDD_3 — 3.3V VDD (Max 4.0V))
49EPGNDExposed Thermal & Ground Pad (EP)
PIN 1 V (3) LCD
I/O
Multiplexed I/O & Peripheral Pin V (3) LCD (General)
Design note: V LCD
IPC-7351B Solder Density & Span C/G/Z Tuner

Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings + 15 Extracted Figures)

Read the original datasheet PDF directly or click any drawing to view fullscreen
Open PDF in New Window ↗Read Datasheet PDF (.pdf)
PDF VIEWEROfficial Datasheet Document: STM32L151C6U6 (ST · UFQFPN-48(7x7))
Scroll, search text (Ctrl+F), or expand directly inside the embedded PDF reader below
1. Realistic 3D PackageREPRESENTATIVE
STM32L151C6U6 (UFQFPN-48(7x7)) - 1. Realistic 3D Package
Detailed solid 3D bodyExpand ›
2. Standard Pinout (Top View)CLEANROOM PINOUT
STM32L151C6U6 (UFQFPN-48(7x7)) - 2. Standard Pinout (Top View)
True package pinout (49 pins)Expand ›
3. Original Datasheet PinoutPDF PINOUT
STM32L151C6U6 (UFQFPN-48(7x7)) - 3. Original Datasheet Pinout
Uncropped datasheet pin diagramExpand ›
4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS
STM32L151C6U6 (UFQFPN-48(7x7)) - 4. Package Dimensions (D×E×A)
UFQFPN-48(7x7) · 7.00×7.00mm · Pitch 0.50mmExpand ›
5. Recommended Land PatternLAND PATTERN
STM32L151C6U6 (UFQFPN-48(7x7)) - 5. Recommended Land Pattern
IPC-7351B Footprint (49 Pads)Expand ›
6. Application SchematicSCHEMATIC
STM32L151C6U6 (UFQFPN-48(7x7)) - 6. Application Schematic
Typical Application SchematicExpand ›
Original Datasheet Pinouts & Technical Drawings (15 figures · Page 1/2)
Showing 1–12 of 15 uncropped original figures for STM32L151 / STM32L152
P35 · p35_fig01EXACT PACKAGE
STM32L151C6U6 (UFQFPN-48(7x7)) — Figure 8. STM32L15xCx UFQFPN48 pinout 633?
Figure 8. STM32L15xCx UFQFPN48 pinout 633?
P112 · p112_fig01EXACT PACKAGE
STM32L151C6U6 (UFQFPN-48(7x7)) — Figure 39. LQFP48 7 x 7 mm, 48-pin low-profile quad flat recommended footprint
Figure 39. LQFP48 7 x 7 mm, 48-pin low-profile quad flat recommended footprint
P114 · p114_fig01EXACT PACKAGE
STM32L151C6U6 (UFQFPN-48(7x7)) — Figure 41. UFQFPN48 7 x 7 mm, 0.5 mm pitch, package outline
Figure 41. UFQFPN48 7 x 7 mm, 0.5 mm pitch, package outline
P115 · p115_fig01EXACT PACKAGE
STM32L151C6U6 (UFQFPN-48(7x7)) — Figure 42. UFQFPN48 7 x 7 mm, 0.5 mm pitch, package recommended footprint
Figure 42. UFQFPN48 7 x 7 mm, 0.5 mm pitch, package recommended footprint
P31 · p31_fig011546×1697px
STM32L151C6U6 (UFQFPN-48(7x7)) — Figure 3. STM32L15xVx UFBGA100 ballout
Figure 3. STM32L15xVx UFBGA100 ballout
P35 · p35_fig01P35
STM32L151C6U6 (UFQFPN-48(7x7)) — Datasheet Page 35 (p35_fig01)
Datasheet Page 35 (p35_fig01)
P51 · p51_fig011546×924px
STM32L151C6U6 (UFQFPN-48(7x7)) — Figure 13. Optional LCD power supply scheme
Figure 13. Optional LCD power supply scheme
P51 · p51_fig021540×837px
STM32L151C6U6 (UFQFPN-48(7x7)) — Figure 14. Current consumption measurement scheme
Figure 14. Current consumption measurement scheme
P51 · p51_fig01P51
STM32L151C6U6 (UFQFPN-48(7x7)) — Datasheet Page 51 (p51_fig01)
Datasheet Page 51 (p51_fig01)
P74 · p74_fig011546×555px
STM32L151C6U6 (UFQFPN-48(7x7)) — Figure 18. Typical application with a 32.768 kHz crystal
Figure 18. Typical application with a 32.768 kHz crystal
P114 · p114_fig01P114
STM32L151C6U6 (UFQFPN-48(7x7)) — Datasheet Page 114 (p114_fig01)
Datasheet Page 114 (p114_fig01)
P115 · p115_fig01P115
STM32L151C6U6 (UFQFPN-48(7x7)) — Datasheet Page 115 (p115_fig01)
Datasheet Page 115 (p115_fig01)
Page 1 / 2 (15 extracted figures)

Technical Specifications & Part Details (STM32L151C6U6)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)
Embedded Microcontroller Unit (MCU)
Detailed Overview:STM32L151C6U6 (UFQFPN-48(7x7)) is a 48-pin embedded microcontroller unit (mcu) featuring a 7.00 × 7.00 × 0.60 mm mechanical envelope (lead pitch e = 0.50 mm). Rated for 1.65 V to 3.6 V supply operation across -40°C to 85°C with integrated USB, UART, SPI, I2C, ADC, DAC, PWM, JTAG / SWD, IrDA, RTC/CLK, SWD/JTAG interfaces.
Operating Supply VoltageV_CC / V_DD
1.65 V to 3.6 V
Place 100nF + 10µF X7R decoupling capacitors < 2mm from supply pins
Ambient Operating TemperatureT_A
-40°C to 85°C
Industrial temperature grade; T_J(max) = +125°C
Clock / RF Operating Frequencyf_CLK / f_RF
32 kHz
Extracted from authoritative PDF specification tables
Current & Power RatingI_OUT / I_CC
I_GPIO(max) = ±20 mA / pin | I_VDD(total) ≤ 150 mA
29 5V-tolerant (FT) pins detected
Package Envelope (D × E × A)D × E × A
7.00 × 7.00 × 0.60 mm (A1=0.04 mm)
Package family: QFN (UFQFPN-48(7x7))
Pin Count & Lead PitchN / e
48 Pins | Pitch e = 0.50 mm (19.7 mil)
Normalized to Center-to-Center Span C per IPC-7351B
Integrated Peripheral InterfacesBuses
USB, UART, SPI, I2C, ADC, DAC, PWM, JTAG / SWD, IrDA, RTC/CLK, SWD/JTAG
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 (PB2, BOOT0): 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 export
5/5 PASS
IEEE-315 Symbol49 auto-grouped pins
OK
IPC-7351B Land Pattern49 pads · Pitch 0.50mm
OK
IPC-7525 60% Solder PasteEPAD 5.60×5.60mm windowed grid
OK
DFM Rules JLCPCB / PCBWayMin pad clearance: 0.25mm
OK
3D STEP AP214 & GLBAligned coordinate origin (0,0,0)
OK

Hardware Verification & Community Engineering Reviews

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet
5.00 PCB Verified

Mechanical Dimensions & Land Pattern (UFQFPN-48(7x7))

Extracted from Datasheet & IPC-7351B Normalized
mm
Package Body (D × E)Nominal
7.00 × 7.00 mm
Height (A) & Pitch (e)IPC-7351B
A=0.60mm · e=0.50mm
Pad Size (W × L)Level B
0.29 × 0.80 mm
Pins / Total PadsTopology
49P / 49Pad (QUAD_ROW)

Recommended Companion BOM & Drop-In Equivalents

Passive external components per reference schematic and 1:1 pin-compatible alternatives
DFM READY
Designator / Replacement MPNValue / PackageFunction & PCB Layout Rule
N/A
BOM
Per application circuit
UFQFPN-48(7x7)
Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — STM32L151C6U6 (UFQFPN-48(7x7))

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 STM32L151C6U6 (UFQFPN-48(7x7))?

Manufactured by ST, the STM32L151C6U6 is housed in a UFQFPN-48(7x7) package with 49 pins and a 0.50 mm lead pitch, supporting a VCC supply range of 1.65 V to 3.6 V. Key pins include: 1 (V (3) LCD: Multiplexed I/O & Peripheral Pin V (3) LCD (General)), 2 (PC13 - WKUP2: Multiplexed I/O & Peripheral Pin PC13 - WKUP2 (RTC/CLK)), 3 (PC14 - OSC32 IN(4)_: Multiplexed I/O & Peripheral Pin PC14 - OSC32 IN(4)_ (RTC/CLK)), 4 (PC15 - OSC32 OUT (4)_: Multiplexed I/O & Peripheral Pin PC15 - OSC32 OUT (4)_ (RTC/CLK)), 5 (PH0 - OSC IN(5)_: Multiplexed I/O & Peripheral Pin PH0 - OSC IN(5)_ (RTC/CLK)), 6 (PH1 - OSC_OUT: Multiplexed I/O & Peripheral Pin PH1 - OSC_OUT (RTC/CLK)).

What are the IPC-7351B PCB Footprint dimensions for STM32L151C6U6?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), STM32L151C6U6 (UFQFPN-48(7x7)) has a nominal body envelope of 7.00 × 7.00 mm, pitch e = 0.50 mm, and 49 copper pads plus a central exposed thermal pad (EPAD) of 5.60 × 5.60 mm with a 60% IPC-7525 windowed solder paste grid.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for STM32L151C6U6?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for STM32L151C6U6 (ST, UFQFPN-48(7x7)) 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 (49 pins) & STM32L151 / STM32L152 Family VariantsExpand static table
Pin #Signal NameElectrical TypeFunctional Description & Design Notes
1V (3) LCDDigital_IOSignal terminal V (3) LCD (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: V (3) LCD. Supported peripheral buses: General.
2PC13 - WKUP2Digital_IOSignal terminal PC13 - WKUP2 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PC13 - WKUP2. Supported peripheral buses: RTC/CLK.
3PC14 - OSC32 IN(4)_Digital_IOSignal terminal PC14 - OSC32 IN(4)_ (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC14 - OSC32 IN(4)_. Supported peripheral buses: RTC/CLK.
4PC15 - OSC32 OUT (4)_Digital_IOSignal terminal PC15 - OSC32 OUT (4)_ (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC15 - OSC32 OUT (4)_. Supported peripheral buses: RTC/CLK.
5PH0 - OSC IN(5)_Digital_IOSignal terminal PH0 - OSC IN(5)_ (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PH0 - OSC IN(5)_. Supported peripheral buses: RTC/CLK.
6PH1 - OSC_OUTDigital_IOSignal terminal PH1 - OSC_OUT (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PH1 - OSC_OUT. Supported peripheral buses: RTC/CLK.
7NRSTDigital_IOActive-low hardware reset terminal (NRST): pulling this pin Low resets the processor core and peripherals.
8VSSAGND0V electrical ground return terminal (VSSA) for internal core logic, I/O drivers, and analog sub-blocks.
9VDDAPower_InPrimary positive power supply input (VDDA) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V).
10PA0WKUP1 -Digital_IOSignal terminal PA0WKUP1 - (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA0WKUP1 -. Supported peripheral buses: UART, ADC, PWM.
11PA1Digital_IOSignal terminal PA1 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA1. Supported peripheral buses: UART, ADC.
12PA2Digital_IOSignal terminal PA2 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA2. Supported peripheral buses: UART, ADC.
13PA3Digital_IOSignal terminal PA3 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PA3. Supported peripheral buses: UART, ADC.
14PA4Digital_IOSignal terminal PA4 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_NSS. Supported peripheral buses: UART, SPI, ADC, DAC.
15PA5Digital_IOSignal terminal PA5 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_SCK. Supported peripheral buses: SPI, ADC, DAC, PWM.
16PA6Digital_IOSignal terminal PA6 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MISO. Supported peripheral buses: SPI, ADC.
17PA7Digital_IOSignal terminal PA7 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MOSI. Supported peripheral buses: SPI, ADC.
18PB0Digital_IOSignal terminal PB0 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PB0. Supported peripheral buses: ADC.
19PB1Digital_IOSignal terminal PB1 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PB1. Supported peripheral buses: ADC.
20PB2Digital_IOSignal terminal PB2 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PB2. Supported peripheral buses: General.
21PB10Digital_IOSignal terminal PB10 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C2_SCL. Supported peripheral buses: UART, I2C.
22PB11Digital_IOSignal terminal PB11 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C2_SDA. Supported peripheral buses: UART, I2C.
23VSS_1GND0V electrical ground return terminal (VSS_1) for internal core logic, I/O drivers, and analog sub-blocks.
24VDD_1Power_InPrimary positive power supply input (VDD_1) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V).
25PB12Digital_IOSignal terminal PB12 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_NSS, I2C2_SMBA. Supported peripheral buses: UART, SPI, I2C, ADC.
26PB13Digital_IOSignal terminal PB13 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_SCK. Supported peripheral buses: UART, SPI, ADC, PWM.
27PB14Digital_IOSignal terminal PB14 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_MISO. Supported peripheral buses: UART, SPI, ADC, PWM.
28PB15Digital_IOSignal terminal PB15 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_MOSI. Supported peripheral buses: SPI, ADC, RTC/CLK.
29PA8Digital_IOSignal terminal PA8 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA8. Supported peripheral buses: UART, RTC/CLK.
30PA9Digital_IOSignal terminal PA9 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA9. Supported peripheral buses: UART.
31PA10Digital_IOSignal terminal PA10 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA10. Supported peripheral buses: UART.
32PA11Digital_IOSignal terminal PA11 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MISO, USB_DM. Supported peripheral buses: USB, UART, SPI.
33PA12Digital_IOSignal terminal PA12 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MOSI, USB_DP. Supported peripheral buses: USB, UART, SPI.
34PA13Digital_IOSignal terminal PA13 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA13. Supported peripheral buses: SWD/JTAG.
35VSS_2GND0V electrical ground return terminal (VSS_2) for internal core logic, I/O drivers, and analog sub-blocks.
36VDD_2Power_InPrimary positive power supply input (VDD_2) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V).
37PA14Digital_IOSignal terminal PA14 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA14. Supported peripheral buses: SWD/JTAG.
38PA15Digital_IOSignal terminal PA15 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_NSS. Supported peripheral buses: SPI, SWD/JTAG.
39PB3Digital_IOSignal terminal PB3 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_SCK. Supported peripheral buses: SPI, SWD/JTAG.
40PB4Digital_IOSignal terminal PB4 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MISO. Supported peripheral buses: SPI, SWD/JTAG.
41PB5Digital_IOSignal terminal PB5 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SMBA, SPI1_MOSI. Supported peripheral buses: SPI, I2C.
42PB6Digital_IOSignal terminal PB6 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SCL. Supported peripheral buses: UART, I2C.
43PB7Digital_IOSignal terminal PB7 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SDA. Supported peripheral buses: UART, I2C.
44BOOT0Digital_IOSignal terminal BOOT0 (I, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: BOOT0. Supported peripheral buses: General.
45PB8Digital_IOSignal terminal PB8 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SCL. Supported peripheral buses: I2C.
46PB9Digital_IOSignal terminal PB9 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SDA. Supported peripheral buses: I2C.
47VSS_3GND0V electrical ground return terminal (VSS_3) for internal core logic, I/O drivers, and analog sub-blocks.
48VDD_3Power_InPrimary positive power supply input (VDD_3) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V).
49EPGNDBottom exposed die attach pad (EP) providing primary thermal conduction path to the PCB and low-inductance 0V ground return.
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