- · 48P
Synchronized Pinout (Symbol / 2D / 3D) (48/48)
Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D| Pin | Symbol | Type | Function (EN) |
|---|---|---|---|
| 1 | VBAT | Power | Power Supply Input (VBAT — 3.3V VDD (Max 4.0V)) |
| 2 | PC13 | I/O | Multiplexed I/O & Peripheral Pin PC13 (RTC/CLK) |
| 3 | PC14 - OSC32_IN | I/O | Multiplexed I/O & Peripheral Pin PC14 - OSC32_IN (RTC/CLK) |
| 4 | PC15 - OSC32_OUT | I/O | Multiplexed I/O & Peripheral Pin PC15 - OSC32_OUT (RTC/CLK) |
| 5 | PF0 - OSC_IN | I/O | Multiplexed I/O & Peripheral Pin PF0 - OSC_IN (I2C, RTC/CLK) |
| 6 | PF1 - OSC_OUT | I/O | Multiplexed I/O & Peripheral Pin PF1 - OSC_OUT (I2C, RTC/CLK) |
| 7 | NRST | I | System Enable & Hardware Reset (NRST) |
| 8 | VSSA/VREF - | GND | Ground Reference Pin (VSSA/VREF -) |
| 9 | VDDA/VREF+ | Power | Power Supply Input (VDDA/VREF+ — 3.3V VDD (Max 4.0V)) |
| 10 | PA0 | I/O | Multiplexed I/O & Peripheral Pin PA0 (UART, ADC, PWM, RTC/CLK) |
| 11 | PA1 | I/O | Multiplexed I/O & Peripheral Pin PA1 (UART, SPI, ADC, RTC/CLK) |
| 12 | PA2 | I/O | Multiplexed I/O & Peripheral Pin PA2 (UART, SPI, ADC) |
| 13 | PA3 | I/O | Multiplexed I/O & Peripheral Pin PA3 (UART, SPI, ADC) |
| 14 | PA4 | I/O | Multiplexed I/O & Peripheral Pin PA4 (UART, SPI, ADC) |
| 15 | PA5 | I/O | Multiplexed I/O & Peripheral Pin PA5 (SPI, ADC) |
| 16 | PA6 | I/O | Multiplexed I/O & Peripheral Pin PA6 (SPI, ADC) |
| 17 | VDD_2 | Power | Power Supply Input (VDD_2 — 3.3V VDD (Max 4.0V)) |
| 18 | PB0 | I/O | Multiplexed I/O & Peripheral Pin PB0 (SPI, ADC, PWM) |
| 19 | PB1 | I/O | Multiplexed I/O & Peripheral Pin PB1 (I2C, ADC) |
| 20 | PB2 | I/O | Multiplexed I/O & Peripheral Pin PB2 (I2C, ADC) |
| 21 | PE8 | I/O | Multiplexed I/O & Peripheral Pin PE8 (I2C, ADC) |
| 22 | PE9 | I/O | Multiplexed I/O & Peripheral Pin PE9 (I2C, ADC) |
| 23 | VSSSD/ VREFSD - | GND | Ground Reference Pin (VSSSD/ VREFSD -) |
| 24 | VDDSD | Power | Power Supply Input (VDDSD — 3.3V VDD (Max 4.0V)) |
| 25 | VREFSD+ | I/O | Multiplexed I/O & Peripheral Pin VREFSD+ (I2C) |
| 26 | PB14 | I/O | Multiplexed I/O & Peripheral Pin PB14 (UART, SPI, I2C, ADC) |
| 27 | PB15 | I/O | Multiplexed I/O & Peripheral Pin PB15 (SPI, I2C, ADC, RTC/CLK) |
| 28 | PD8 | I/O | Multiplexed I/O & Peripheral Pin PD8 (UART, SPI, I2C, ADC) |
| 29 | PA8 | I/O | Multiplexed I/O & Peripheral Pin PA8 (SPI, I2C, RTC/CLK) |
| 30 | PA9 | I/O | Multiplexed I/O & Peripheral Pin PA9 (SPI, I2C, PWM) |
| 31 | PA10 | I/O | Multiplexed I/O & Peripheral Pin PA10 (SPI, I2C, PWM) |
| 32 | PA11 | I/O | Multiplexed I/O & Peripheral Pin PA11 (UART, SPI, PWM) |
| 33 | PA12 | I/O | Multiplexed I/O & Peripheral Pin PA12 (USB, UART, SPI, PWM) |
| 34 | PA13 | I/O | Multiplexed I/O & Peripheral Pin PA13 (UART, SPI, SWD/JTAG) |
| 35 | PF6 | I/O | Multiplexed I/O & Peripheral Pin PF6 (UART, SPI, I2C) |
| 36 | PF7 | I/O | Multiplexed I/O & Peripheral Pin PF7 (I2C) |
| 37 | PA14 | I/O | Multiplexed I/O & Peripheral Pin PA14 (I2C) |
| 38 | PA15 | I/O | Multiplexed I/O & Peripheral Pin PA15 (SPI, I2C) |
| 39 | PB3 | I/O | Multiplexed I/O & Peripheral Pin PB3 (UART, SPI, SWD/JTAG) |
| 40 | PB4 | I/O | Multiplexed I/O & Peripheral Pin PB4 (UART, SPI, PWM) |
| 41 | PB5 | I/O | Multiplexed I/O & Peripheral Pin PB5 (SPI, I2C) |
| 42 | PB6 | I/O | Multiplexed I/O & Peripheral Pin PB6 (I2C, PWM) |
| 43 | PB7 | I/O | Multiplexed I/O & Peripheral Pin PB7 (I2C, PWM) |
| 44 | BOOT0 | I | Input-Only Pin BOOT0 (General) |
| 45 | PB8 | I/O | Multiplexed I/O & Peripheral Pin PB8 (SPI, I2C, PWM, CAN) |
| 46 | PB9 | I/O | Multiplexed I/O & Peripheral Pin PB9 (SPI, I2C, CAN) |
| 47 | VSS_1 | GND | Ground Reference Pin (VSS_1) |
| 48 | VDD_1 | Power | Power Supply Input (VDD_1 — 3.3V VDD (Max 4.0V)) |
PIN 1 VBAT
PowerPower Supply Input (VBAT — 3.3V VDD (Max 4.0V))
Design note: Alt: Backuppowersupply
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 fullscreen1. Realistic 3D PackageREPRESENTATIVE
Detailed solid 3D bodyExpand ›
2. Standard Pinout (Top View)CLEANROOM PINOUT
True package pinout (48 pins)Expand ›
3. Original Datasheet PinoutPDF PINOUT
Uncropped datasheet pin diagramExpand ›
4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS
LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL_1 · 7.00×7.00mm · Pitch 0.50mmExpand ›
5. Recommended Land PatternLAND PATTERN
IPC-7351B Footprint (48 Pads)Expand ›
6. Application SchematicSCHEMATIC
Typical Application SchematicExpand ›
Original Datasheet Pinouts & Technical Drawings (15 figures · Page 1/2)
Showing 1–12 of 15 uncropped original figures for STM32F372
P28 · p28_fig01EXACT PACKAGE
P1 · p01_fig01881×410px
P28 · p28_fig01P28
P51 · p51_fig011546×2149px
P51 · p51_fig01P51
P73 · p73_fig011546×618px
P75 · p75_fig011546×681px
P114 · p114_fig01P114
P116 · p116_fig011546×1019px
P116 · p116_fig01P116
P118 · p118_fig011546×944px
P120 · p120_fig011546×1008px
Page 1 / 2 (15 extracted figures)
Technical Specifications & Part Details (STM32F372CCT6)
Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)Detailed Overview:STM32F372CCT6 (LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL_1) 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 3.0V ~ 3.6V (Typ 3.3V) supply operation across -40°C ~ +85°C (Industrial Grade) with integrated USB, UART, SPI, I2C, I2S, ADC, DAC, PWM, JTAG / SWD, IrDA, CAN, RTC/CLK, SWD/JTAG 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
72 MHz
Extracted from authoritative PDF specification tables
Current & Power RatingI_OUT / I_CC
I_GPIO(max) = ±20 mA / pin | I_VDD(total) ≤ 150 mA
19 5V-tolerant (FT) pins detected
Package Envelope (D × E × A)D × E × A
7.00 × 7.00 × 1.60 mm (A1=0.08 mm)
Package family: LQFP (LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL_1)
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, PWM, JTAG / SWD, IrDA, CAN, 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 exportIEEE-315 Symbol48 auto-grouped pins
IPC-7351B Land Pattern48 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 — STM32F372 (2)
- · 64P
Mechanical Dimensions & Land Pattern (LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL_1)
Extracted from Datasheet & IPC-7351B NormalizedPackage 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| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| N/A BOM | Per application circuit LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL_1 | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — STM32F372CCT6 (LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL_1)
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of STM32F372CCT6 (LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL_1)?
Manufactured by ST, the STM32F372CCT6 is housed in a LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL_1 package with 48 pins and a 0.50 mm lead pitch. Key pins include: 1 (VBAT: Power Supply Input (VBAT — 3.3V VDD (Max 4.0V))), 2 (PC13: Multiplexed I/O & Peripheral Pin PC13 (RTC/CLK)), 3 (PC14 - OSC32_IN: Multiplexed I/O & Peripheral Pin PC14 - OSC32_IN (RTC/CLK)), 4 (PC15 - OSC32_OUT: Multiplexed I/O & Peripheral Pin PC15 - OSC32_OUT (RTC/CLK)), 5 (PF0 - OSC_IN: Multiplexed I/O & Peripheral Pin PF0 - OSC_IN (I2C, RTC/CLK)), 6 (PF1 - OSC_OUT: Multiplexed I/O & Peripheral Pin PF1 - OSC_OUT (I2C, RTC/CLK)).
What are the IPC-7351B PCB Footprint dimensions for STM32F372CCT6?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), STM32F372CCT6 (LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL_1) 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 STM32F372CCT6?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for STM32F372CCT6 (ST, LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL_1) 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) & STM32F372 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | VBAT | Power_In | Primary positive power supply input (VBAT) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| 2 | PC13 | Digital_IO | Signal terminal PC13 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC13. Supported peripheral buses: RTC/CLK. |
| 3 | PC14 - OSC32_IN | Digital_IO | Signal terminal PC14 - OSC32_IN (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC14 - OSC32_IN. Supported peripheral buses: RTC/CLK. |
| 4 | PC15 - OSC32_OUT | Digital_IO | Signal terminal PC15 - OSC32_OUT (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC15 - OSC32_OUT. Supported peripheral buses: RTC/CLK. |
| 5 | PF0 - OSC_IN | Digital_IO | Signal terminal PF0 - OSC_IN (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C2_SDA. Supported peripheral buses: I2C, RTC/CLK. |
| 6 | PF1 - OSC_OUT | Digital_IO | Signal terminal PF1 - OSC_OUT (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C2_SCL. Supported peripheral buses: I2C, RTC/CLK. |
| 7 | NRST | Digital_IO | Active-low hardware reset terminal (NRST): pulling this pin Low resets the processor core and peripherals. |
| 8 | VSSA/VREF - | GND | 0V electrical ground return terminal (VSSA/VREF -) for internal core logic, I/O drivers, and analog sub-blocks. |
| 9 | VDDA/VREF+ | Power_In | Primary positive power supply input (VDDA/VREF+) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| 10 | PA0 | Digital_IO | Signal terminal PA0 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PA0. Supported peripheral buses: UART, ADC, PWM, RTC/CLK. |
| 11 | PA1 | Digital_IO | Signal terminal PA1 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI3_SCK. Supported peripheral buses: UART, SPI, ADC, RTC/CLK. |
| 12 | PA2 | Digital_IO | Signal terminal PA2 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI3_MISO. Supported peripheral buses: UART, SPI, ADC. |
| 13 | PA3 | Digital_IO | Signal terminal PA3 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI3_MOSI. Supported peripheral buses: UART, SPI, ADC. |
| 14 | PA4 | Digital_IO | Signal terminal PA4 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_NSS, SPI3_NSS. Supported peripheral buses: UART, SPI, ADC. |
| 15 | PA5 | Digital_IO | Signal terminal PA5 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_SCK. Supported peripheral buses: SPI, ADC. |
| 16 | PA6 | Digital_IO | Signal terminal PA6 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_MISO. Supported peripheral buses: SPI, ADC. |
| 17 | VDD_2 | Power_In | Primary positive power supply input (VDD_2) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| 18 | PB0 | Digital_IO | Signal terminal PB0 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_MOSI. Supported peripheral buses: SPI, ADC, PWM. |
| 19 | PB1 | Digital_IO | Signal terminal PB1 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PB1. Supported peripheral buses: I2C, ADC. |
| 20 | PB2 | Digital_IO | Signal terminal PB2 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PB2. Supported peripheral buses: I2C, ADC. |
| 21 | PE8 | Digital_IO | Signal terminal PE8 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PE8. Supported peripheral buses: I2C, ADC. |
| 22 | PE9 | Digital_IO | Signal terminal PE9 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PE9. Supported peripheral buses: I2C, ADC. |
| 23 | VSSSD/ VREFSD - | GND | 0V electrical ground return terminal (VSSSD/ VREFSD -) for internal core logic, I/O drivers, and analog sub-blocks. |
| 24 | VDDSD | Power_In | Primary positive power supply input (VDDSD) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| 25 | VREFSD+ | Digital_IO | Signal terminal VREFSD+ (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: VREFSD+. Supported peripheral buses: I2C. |
| 26 | PB14 | Digital_IO | Signal terminal PB14 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI2_MISO. Supported peripheral buses: UART, SPI, I2C, ADC. |
| 27 | PB15 | Digital_IO | Signal terminal PB15 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI2_MOSI. Supported peripheral buses: SPI, I2C, ADC, RTC/CLK. |
| 28 | PD8 | Digital_IO | Signal terminal PD8 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI2_SCK. Supported peripheral buses: UART, SPI, I2C, ADC. |
| 29 | PA8 | Digital_IO | Signal terminal PA8 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_SCK. Supported peripheral buses: SPI, I2C, RTC/CLK. |
| 30 | PA9 | Digital_IO | Signal terminal PA9 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_MISO. Supported peripheral buses: SPI, I2C, PWM. |
| 31 | PA10 | Digital_IO | Signal terminal PA10 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_MOSI. Supported peripheral buses: SPI, I2C, PWM. |
| 32 | PA11 | Digital_IO | Signal terminal PA11 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_NSS, SPI1_NSS. Supported peripheral buses: UART, SPI, PWM. |
| 33 | PA12 | Digital_IO | Signal terminal PA12 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_SCK. Supported peripheral buses: USB, UART, SPI, PWM. |
| 34 | PA13 | Digital_IO | Signal terminal PA13 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MISO. Supported peripheral buses: UART, SPI, SWD/JTAG. |
| 35 | PF6 | Digital_IO | Signal terminal PF6 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MOSI, I2C2_SCL. Supported peripheral buses: UART, SPI, I2C. |
| 36 | PF7 | Digital_IO | Signal terminal PF7 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PF7. Supported peripheral buses: I2C. |
| 37 | PA14 | Digital_IO | Signal terminal PA14 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PA14. Supported peripheral buses: I2C. |
| 38 | PA15 | Digital_IO | Signal terminal PA15 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_NSS, SPI3_NSS. Supported peripheral buses: SPI, I2C. |
| 39 | PB3 | Digital_IO | Signal terminal PB3 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_SCK, SPI3_SCK. Supported peripheral buses: UART, SPI, SWD/JTAG. |
| 40 | PB4 | Digital_IO | Signal terminal PB4 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MISO, SPI3_MISO. Supported peripheral buses: UART, SPI, PWM. |
| 41 | PB5 | Digital_IO | Signal terminal PB5 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MOSI, SPI3_MOSI. Supported peripheral buses: SPI, I2C. |
| 42 | PB6 | Digital_IO | Signal terminal PB6 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PB6. Supported peripheral buses: I2C, PWM. |
| 43 | PB7 | Digital_IO | Signal terminal PB7 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PB7. Supported peripheral buses: I2C, PWM. |
| 44 | BOOT0 | Digital_IO | Signal terminal BOOT0 (I, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: BOOT0. Supported peripheral buses: General. |
| 45 | PB8 | Digital_IO | Signal terminal PB8 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_SCK. Supported peripheral buses: SPI, I2C, PWM, CAN. |
| 46 | PB9 | Digital_IO | Signal terminal PB9 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI2_NSS. Supported peripheral buses: SPI, I2C, CAN. |
| 47 | VSS_1 | GND | 0V electrical ground return terminal (VSS_1) for internal core logic, I/O drivers, and analog sub-blocks. |
| 48 | VDD_1 | Power_In | Primary positive power supply input (VDD_1) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |