STM32L063C8T6 (LQFP-48(7x7)) — Symbol, Footprint IPC-7351B & 3D STEP Model

STM32L063C8T6

STLQFP-48(7x7) · 48 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 · STM32L063C8T6 (LQFP-48(7x7))1VLCD2PC1333V34NC5PH0OSC IN(PH6PH1OSC OUT(P7NRST8VSSA9VDDA10PA011PA112PA213PA314PA415PA516PA617PA718PB019PB120PB221PB1022PB1123VSS24VDD48VDD47VSS46PB945PB844BOOT043PB742PB641PB540PB439PB338PA1537PA1436VDD_USB35VSS34PA1333PA1232PA1131PA1030PA929PA828PB1527PB1426PB1325PB12Grid Pitch = 2.54mm (IEEE-315)-17.8-12.7-7.6-2.52.57.612.717.835.630.525.420.315.210.25.10-5.1-10.2-15.2-20.3-25.4-30.5-35.6mm
2. 2D FOOTPRINT
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748E=7.00mm · Pitch e=0.50mmD=7.00mm-7-5-3-113577531-1-3-5-7mm
3. 3D CAD MODEL
Package Body: 7.00mm × 7.00mm · Pitch: 0.50mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (48/48)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
PinSymbolTypeFunction (EN)
1VLCDI/OMultiplexed I/O & Peripheral Pin VLCD (General)
2PC13I/OMultiplexed I/O & Peripheral Pin PC13 (RTC/CLK)
33V3Power3.3V Main Power Supply Rail (3.0V ~ 3.6V)
4NCNCNo Connect (Leave Floating)
5PH0OSC IN(PH0) -_I/OMultiplexed I/O & Peripheral Pin PH0OSC IN(PH0) -_ (USB, RTC/CLK)
6PH1OSC OUT(PH1) -_I/OMultiplexed I/O & Peripheral Pin PH1OSC OUT(PH1) -_ (RTC/CLK)
7NRSTISystem Enable & Hardware Reset (NRST)
8VSSAGNDGround Reference Pin (VSSA)
9VDDAPowerPower Supply Input (VDDA — 3.3V VDD (Max 4.0V))
10PA0I/OMultiplexed I/O & Peripheral Pin PA0 (UART, PWM, RTC/CLK)
11PA1I/OMultiplexed I/O & Peripheral Pin PA1 (UART)
12PA2I/OMultiplexed I/O & Peripheral Pin PA2 (UART)
13PA3I/OMultiplexed I/O & Peripheral Pin PA3 (UART)
14PA4I/OMultiplexed I/O & Peripheral Pin PA4 (UART, SPI, DAC)
15PA5I/OMultiplexed I/O & Peripheral Pin PA5 (SPI, PWM)
16PA6I/OMultiplexed I/O & Peripheral Pin PA6 (UART, SPI, ADC)
17PA7I/OMultiplexed I/O & Peripheral Pin PA7 (SPI, ADC)
18PB0I/OMultiplexed I/O & Peripheral Pin PB0 (General)
19PB1I/OMultiplexed I/O & Peripheral Pin PB1 (UART, ADC)
20PB2I/OMultiplexed I/O & Peripheral Pin PB2 (General)
21PB10I/OMultiplexed I/O & Peripheral Pin PB10 (SPI, PWM)
22PB11I/OMultiplexed I/O & Peripheral Pin PB11 (I2C, PWM)
23VSSGNDGround Reference Pin (VSS)
24VDDPowerPower Supply Input (VDD — 3.3V VDD (Max 4.0V))
25PB12I/OMultiplexed I/O & Peripheral Pin PB12 (UART, SPI, I2C)
26PB13I/OMultiplexed I/O & Peripheral Pin PB13 (UART, SPI, I2C)
27PB14I/OMultiplexed I/O & Peripheral Pin PB14 (UART, SPI, I2C, RTC/CLK)
28PB15I/OMultiplexed I/O & Peripheral Pin PB15 (SPI, RTC/CLK)
29PA8I/OMultiplexed I/O & Peripheral Pin PA8 (USB, UART, RTC/CLK)
30PA9I/OMultiplexed I/O & Peripheral Pin PA9 (UART, RTC/CLK)
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 (USB, SWD/JTAG)
35VSSGNDGround Reference Pin (VSS)
36VDD_USBPowerPower Supply Input (VDD_USB — 3.3V VDD (Max 4.0V))
37PA14I/OMultiplexed I/O & Peripheral Pin PA14 (UART, SWD/JTAG)
38PA15I/OMultiplexed I/O & Peripheral Pin PA15 (UART, SPI, PWM)
39PB3I/OMultiplexed I/O & Peripheral Pin PB3 (SPI, PWM)
40PB4I/OMultiplexed I/O & Peripheral Pin PB4 (SPI)
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 (General)
46PB9I/OMultiplexed I/O & Peripheral Pin PB9 (General)
47VSSGNDGround Reference Pin (VSS)
48VDDPowerPower Supply Input (VDD — 3.3V VDD (Max 4.0V))
PIN 1 VLCD
I/O
Multiplexed I/O & Peripheral Pin VLCD (General)
Design note: Signal terminal VLCD (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: VLCD. Supported peripheral buses: General.
IPC-7351B Solder Density & Span C/G/Z Tuner

Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings + 14 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: STM32L063C8T6 (ST · LQFP-48(7x7))
Scroll, search text (Ctrl+F), or expand directly inside the embedded PDF reader below
1. Realistic 3D PackageREPRESENTATIVE
STM32L063C8T6 (LQFP-48(7x7)) - 1. Realistic 3D Package
Detailed solid 3D bodyExpand ›
2. Standard Pinout (Top View)CLEANROOM PINOUT
STM32L063C8T6 (LQFP-48(7x7)) - 2. Standard Pinout (Top View)
True package pinout (48 pins)Expand ›
3. Original Datasheet PinoutPDF PINOUT
STM32L063C8T6 (LQFP-48(7x7)) - 3. Original Datasheet Pinout
Uncropped datasheet pin diagramExpand ›
4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS
STM32L063C8T6 (LQFP-48(7x7)) - 4. Package Dimensions (D×E×A)
LQFP-48(7x7) · 7.00×7.00mm · Pitch 0.50mmExpand ›
5. Recommended Land PatternLAND PATTERN
STM32L063C8T6 (LQFP-48(7x7)) - 5. Recommended Land Pattern
IPC-7351B Footprint (48 Pads)Expand ›
6. Application SchematicSCHEMATIC
STM32L063C8T6 (LQFP-48(7x7)) - 6. Application Schematic
Typical Application SchematicExpand ›
Original Datasheet Pinouts & Technical Drawings (14 figures · Page 1/2)
Showing 1–12 of 14 uncropped original figures for STM32L063
P1 · p01_fig01EXACT PACKAGE
STM32L063C8T6 (LQFP-48(7x7)) — Ultra-low-power 32-bit MCU Arm®-based Cortex®-M0+, 64KB Flash,
Ultra-low-power 32-bit MCU Arm®-based Cortex®-M0+, 64KB Flash,
P38 · p38_fig01EXACT PACKAGE
STM32L063C8T6 (LQFP-48(7x7)) — Figure 4. STM32L063x8 LQFP48 pinout
Figure 4. STM32L063x8 LQFP48 pinout
P115 · p115_fig01EXACT PACKAGE
STM32L063C8T6 (LQFP-48(7x7)) — Figure 37. LQFP48 - 48-pin, 7 x 7 mm low-profile quad flat package outline
Figure 37. LQFP48 - 48-pin, 7 x 7 mm low-profile quad flat package outline
P116 · p116_fig01EXACT PACKAGE
STM32L063C8T6 (LQFP-48(7x7)) — Figure 38. LQFP48 - 48-pin, 7 x 7 mm low-profile quad flat recommended footprint
Figure 38. LQFP48 - 48-pin, 7 x 7 mm low-profile quad flat recommended footprint
P38 · p38_fig021546×1007px
STM32L063C8T6 (LQFP-48(7x7)) — Figure 5. STM32L063x8 UFQFPN48
Figure 5. STM32L063x8 UFQFPN48
P52 · p52_fig011546×1527px
STM32L063C8T6 (LQFP-48(7x7)) — Figure 8. Power supply scheme
Figure 8. Power supply scheme
P53 · p53_fig011546×975px
STM32L063C8T6 (LQFP-48(7x7)) — Figure 9. Optional LCD power supply scheme
Figure 9. Optional LCD power supply scheme
P53 · p53_fig021546×555px
STM32L063C8T6 (LQFP-48(7x7)) — Figure 10. Current consumption measurement scheme
Figure 10. Current consumption measurement scheme
P94 · p94_fig011751×902px
STM32L063C8T6 (LQFP-48(7x7)) — Figure 25. ADC accuracy characteristics
Figure 25. ADC accuracy characteristics
P94 · p94_fig021546×705px
STM32L063C8T6 (LQFP-48(7x7)) — Figure 26. Typical connection diagram using the ADC
Figure 26. Typical connection diagram using the ADC
P119 · p119_fig011546×1055px
STM32L063C8T6 (LQFP-48(7x7)) — Figure 41. UFQFPN48 - 48 leads, 7x7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat
Figure 41. UFQFPN48 - 48 leads, 7x7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat
P37 · p37_fig01EXACT PACKAGE
STM32L063C8T6 (LQFP-48(7x7)) — Figure 3. STM32L063x8 LQFP64 pinout VSS 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 17 18 19 20 21 22 23 24 29 30 31 32 25 26 27 28 [LQFP-64(10x10)]
Figure 3. STM32L063x8 LQFP64 pinout VSS 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 17 18 19 20 21 22 23 24 29 30 31 32 25 26 27 28 [LQFP-64(10x10)]
Page 1 / 2 (14 extracted figures)

Technical Specifications & Part Details (STM32L063C8T6)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)
Embedded Microcontroller Unit (MCU)
Detailed Overview:STM32L063C8T6 (LQFP-48(7x7)) is a 48-pin embedded microcontroller unit (mcu) featuring a 7.00 × 7.00 × 1.60 mm mechanical envelope (lead pitch e = 0.50 mm). Rated for 1.65 V to 3.6 V supply operation across -40°C ~ +85°C (Industrial Grade) with integrated USB, UART, SPI, I2C, I2S, ADC, DAC, IrDA, PWM, 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 ~ +85°C (Industrial Grade)
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
30 5V-tolerant (FT) pins detected
Package Envelope (D × E × A)D × E × A
7.00 × 7.00 × 1.60 mm (A1=0.10 mm)
Package family: LQFP (LQFP-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, I2S, ADC, DAC, IrDA, PWM, 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 (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 Symbol48 auto-grouped pins
OK
IPC-7351B Land Pattern48 pads · Pitch 0.50mm
OK
IPC-7525 60% Solder PasteReflow 1:1 Standard
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
IPC-7351B

Family Variants & Same Datasheet Chips — STM32L063 (4)

Select package variant or sibling MPN sharing this datasheet

Mechanical Dimensions & Land Pattern (LQFP-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=1.60mm · e=0.50mm
Pad Size (W × L)Level B
0.30 × 1.20 mm
Pins / Total PadsTopology
48P / 48Pad (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
LQFP-48(7x7)
Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — STM32L063C8T6 (LQFP-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 STM32L063C8T6 (LQFP-48(7x7))?

Manufactured by ST, the STM32L063C8T6 is housed in a LQFP-48(7x7) package with 48 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 (VLCD: Multiplexed I/O & Peripheral Pin VLCD (General)), 2 (PC13: Multiplexed I/O & Peripheral Pin PC13 (RTC/CLK)), 3 (3V3: 3.3V Main Power Supply Rail (3.0V ~ 3.6V)), 4 (NC: No Connect (Leave Floating)), 5 (PH0OSC IN(PH0) -_: Multiplexed I/O & Peripheral Pin PH0OSC IN(PH0) -_ (USB, RTC/CLK)), 6 (PH1OSC OUT(PH1) -_: Multiplexed I/O & Peripheral Pin PH1OSC OUT(PH1) -_ (RTC/CLK)).

What are the IPC-7351B PCB Footprint dimensions for STM32L063C8T6?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), STM32L063C8T6 (LQFP-48(7x7)) has a nominal body envelope of 7.00 × 7.00 mm, pitch e = 0.50 mm, and 48 copper pads.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for STM32L063C8T6?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for STM32L063C8T6 (ST, LQFP-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 (48 pins) & STM32L063 Family VariantsExpand static table
Pin #Signal NameElectrical TypeFunctional Description & Design Notes
1VLCDDigital_IOSignal terminal VLCD (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: VLCD. Supported peripheral buses: General.
2PC13Digital_IOSignal terminal PC13 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PC13. Supported peripheral buses: RTC/CLK.
33V3Power_In3.3V Main Power Supply Rail (3.0V ~ 3.6V)
4NCNo_ConnectNo Connect (Leave Floating)
5PH0OSC IN(PH0) -_Digital_IOSignal terminal PH0OSC IN(PH0) -_ (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PH0OSC IN(PH0) -_. Supported peripheral buses: USB, RTC/CLK.
6PH1OSC OUT(PH1) -_Digital_IOSignal terminal PH1OSC OUT(PH1) -_ (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PH1OSC OUT(PH1) -_. 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).
10PA0Digital_IOSignal terminal PA0 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA0. Supported peripheral buses: UART, PWM, RTC/CLK.
11PA1Digital_IOSignal terminal PA1 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA1. Supported peripheral buses: UART.
12PA2Digital_IOSignal terminal PA2 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA2. Supported peripheral buses: UART.
13PA3Digital_IOSignal terminal PA3 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA3. Supported peripheral buses: UART.
14PA4Digital_IOSignal terminal PA4 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_NSS. Supported peripheral buses: UART, SPI, DAC.
15PA5Digital_IOSignal terminal PA5 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_SCKTIM2ETR. Supported peripheral buses: SPI, PWM.
16PA6Digital_IOSignal terminal PA6 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MISO. Supported peripheral buses: UART, 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 (5V-Tolerant FT) domain). Multiplexed alternate functions: PB0. Supported peripheral buses: General.
19PB1Digital_IOSignal terminal PB1 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PB1. Supported peripheral buses: UART, 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: SPI2_SCKI2C2SCL. Supported peripheral buses: SPI, PWM.
22PB11Digital_IOSignal terminal PB11 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C2_SDA. Supported peripheral buses: I2C, PWM.
23VSSGND0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks.
24VDDPower_InPrimary positive power supply input (VDD) 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.
26PB13Digital_IOSignal terminal PB13 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_SCK. Supported peripheral buses: UART, SPI, I2C.
27PB14Digital_IOSignal terminal PB14 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_MISO. Supported peripheral buses: UART, SPI, I2C, RTC/CLK.
28PB15Digital_IOSignal terminal PB15 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_MOSI. Supported peripheral buses: SPI, RTC/CLK.
29PA8Digital_IOSignal terminal PA8 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA8. Supported peripheral buses: USB, UART, RTC/CLK.
30PA9Digital_IOSignal terminal PA9 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA9. Supported peripheral buses: UART, RTC/CLK.
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: USB, SWD/JTAG.
35VSSGND0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks.
36VDD_USBPower_InPrimary positive power supply input (VDD_USB) 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: UART, SWD/JTAG.
38PA15Digital_IOSignal terminal PA15 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_NSS. Supported peripheral buses: UART, SPI, PWM.
39PB3Digital_IOSignal terminal PB3 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_SCKLCDSEG7. Supported peripheral buses: SPI, PWM.
40PB4Digital_IOSignal terminal PB4 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MISO. Supported peripheral buses: SPI.
41PB5Digital_IOSignal terminal PB5 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MOSI, I2C1_SMBA. 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: PB7. 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 (Max 4.0V) domain). Multiplexed alternate functions: PB8. Supported peripheral buses: General.
46PB9Digital_IOSignal terminal PB9 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PB9. Supported peripheral buses: General.
47VSSGND0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks.
48VDDPower_InPrimary positive power supply input (VDD) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V).