Mechanical Dimensions & Land Pattern (LFBGA-144)
Extracted from Datasheet & IPC-7351B NormalizedRecommended 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 |
|---|---|---|
| C1, C2, C3 BOM | 3× 100nF (0.1µF) 50V X7R 0402 / 0603 | Digital supply decoupling caps for VDD_1..3 (Pins 24, 36, 48) — place < 1.5mm from each VDD pin. |
| C4 BOM | 4.7µF ~ 10µF 10V X5R 0603 / 0805 | Bulk decoupling capacitor for main VDD rail — place near 3.3V power entry to the MCU. |
| C5, C6 + FB1 BOM | 100nF + 1µF + Ferrite 600Ω@100MHz 0402 / 0603 | Analog rail filter for VDDA/VSSA (Pins 8, 9) 12-bit ADC — isolate digital switching noise. |
| Y1 + C7, C8 BOM | 8MHz Crystal (CL=12pF) + 2× 18pF NP0 SMD-3225 + 0402 | Main HSE oscillator crystal (Pin 5 PD0, Pin 6 PD1) — route matched traces < 4mm with GND guard ring. |
| STM32F103CBT6 STMicroelectronics | 100% Drop-in (128KB Flash Upgrade) | 100% Drop-in (128KB Flash Upgrade) — identical LQFP-48 pinout with doubled Flash capacity. |
| GD32F103C8T6 GigaDevice | Pin-to-Pin LQFP-48 (108MHz) | Pin-to-Pin LQFP-48 (108MHz) — higher core clock; verify Flash wait-states & USB timing. |
| APM32F103C8T6 Geehy | Pin-to-Pin LQFP-48 (96MHz) | Pin-to-Pin LQFP-48 (96MHz) — direct hardware replacement, register-compatible with STM32F1. |
Technical Frequently Asked Questions (FAQ) — STM32F103ZGH6 (LFBGA-144)
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of STM32F103ZGH6 (LFBGA-144)?
Manufactured by ST, the STM32F103ZGH6 is housed in a LFBGA-144 package with 144 pins and a 0.80 mm lead pitch. Key pins include: A1 (PC13TAMPER - - RTC: Multiplexed I/O & Peripheral Pin PC13TAMPER - - RTC (RTC/CLK)), A2 (PE3: Multiplexed I/O & Peripheral Pin PE3 (General)), A3 (PE2: Multiplexed I/O & Peripheral Pin PE2 (General)), A4 (PE1: Multiplexed I/O & Peripheral Pin PE1 (General)), A5 (PE0: Multiplexed I/O & Peripheral Pin PE0 (General)), A6 (PB4: Multiplexed I/O & Peripheral Pin PB4 (SPI, SWD/JTAG)).
What are the IPC-7351B PCB Footprint dimensions for STM32F103ZGH6?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), STM32F103ZGH6 (LFBGA-144) has a nominal body envelope of 10.00 × 10.00 mm, pitch e = 0.80 mm, and 144 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for STM32F103ZGH6?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for STM32F103ZGH6 (ST, LFBGA-144) 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) & STM32F103 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| A1 | PC13TAMPER - - RTC | Digital_IO | Signal terminal PC13TAMPER - - RTC (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC13TAMPER - - RTC. Supported peripheral buses: RTC/CLK. |
| A2 | PE3 | Digital_IO | Signal terminal PE3 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PE3. Supported peripheral buses: General. |
| A3 | PE2 | Digital_IO | Signal terminal PE2 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PE2. Supported peripheral buses: General. |
| A4 | PE1 | Digital_IO | Signal terminal PE1 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PE1. Supported peripheral buses: General. |
| A5 | PE0 | Digital_IO | Signal terminal PE0 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PE0. Supported peripheral buses: General. |
| A6 | PB4 | Digital_IO | Signal terminal PB4 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI3_MISO. Supported peripheral buses: SPI, SWD/JTAG. |
| A7 | PB3 | Digital_IO | Signal terminal PB3 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI3_SCK. Supported peripheral buses: SPI, SWD/JTAG. |
| A8 | PD6 | Digital_IO | Signal terminal PD6 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PD6. Supported peripheral buses: General. |
| A9 | PD7 | Digital_IO | Signal terminal PD7 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PD7. Supported peripheral buses: General. |
| A10 | PA15 | Digital_IO | Signal terminal PA15 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI3_NSS. Supported peripheral buses: SPI, SWD/JTAG. |
| A11 | PA14 | Digital_IO | Signal terminal PA14 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PA14. Supported peripheral buses: SWD/JTAG. |
| A12 | PA13 | Digital_IO | Signal terminal PA13 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PA13. Supported peripheral buses: SWD/JTAG. |
| B1 | PC14OSC32 IN(5) -_ | Digital_IO | Signal terminal PC14OSC32 IN(5) -_ (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC14OSC32 IN(5) -_. Supported peripheral buses: RTC/CLK. |
| B2 | PE4 | Digital_IO | Signal terminal PE4 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PE4. Supported peripheral buses: General. |
| B3 | PE5 | Digital_IO | Signal terminal PE5 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PE5. Supported peripheral buses: General. |
| B4 | PE6 | Digital_IO | Signal terminal PE6 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PE6. Supported peripheral buses: General. |
| B5 | PB9 | Digital_IO | Signal terminal PB9 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PB9. Supported peripheral buses: General. |
| B6 | PB5 | Digital_IO | Signal terminal PB5 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: I2C1_SMBA, SPI3_MOSI. Supported peripheral buses: SPI, I2C. |
| B7 | PG15 | Digital_IO | Signal terminal PG15 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PG15. Supported peripheral buses: General. |
| B8 | PG12 | Digital_IO | Signal terminal PG12 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PG12. Supported peripheral buses: General. |
| B9 | PD5 | Digital_IO | Signal terminal PD5 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PD5. Supported peripheral buses: General. |
| B10 | PC11 | Digital_IO | Signal terminal PC11 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC11. Supported peripheral buses: UART. |
| B11 | PC10 | Digital_IO | Signal terminal PC10 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC10. Supported peripheral buses: UART. |
| B12 | PA12 | Digital_IO | Signal terminal PA12 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: USB_DP. Supported peripheral buses: USB, UART, CAN. |
| C1 | PC15 - OSC32 OUT(5)_ | Digital_IO | Signal terminal PC15 - OSC32 OUT(5)_ (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC15 - OSC32 OUT(5)_. Supported peripheral buses: RTC/CLK. |
| C2 | VBAT | Power_In | Primary positive power supply input (VBAT) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| C3 | PF0 | Digital_IO | Signal terminal PF0 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PF0. Supported peripheral buses: General. |
| C4 | PF1 | Digital_IO | Signal terminal PF1 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PF1. Supported peripheral buses: General. |
| C5 | PB8 | Digital_IO | Signal terminal PB8 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PB8. Supported peripheral buses: General. |
| C6 | PB6 | Digital_IO | Signal terminal PB6 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: I2C1_SCL. Supported peripheral buses: I2C. |
| C7 | PG14 | Digital_IO | Signal terminal PG14 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PG14. Supported peripheral buses: General. |
| C8 | PG11 | Digital_IO | Signal terminal PG11 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PG11. Supported peripheral buses: General. |
| C9 | PD4 | Digital_IO | Signal terminal PD4 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PD4. Supported peripheral buses: General. |
| C10 | PC12 | Digital_IO | Signal terminal PC12 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC12. Supported peripheral buses: UART. |
| C11 | Notconnected | Digital_IO | Signal terminal Notconnected (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: Notconnected. Supported peripheral buses: General. |
| C12 | PA11 | Digital_IO | Signal terminal PA11 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: USB_DM. Supported peripheral buses: USB, UART, CAN. |
| D1 | OSC_IN | Digital_IO | Signal terminal OSC_IN (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: OSC_IN. Supported peripheral buses: RTC/CLK. |
| D2 | VSS_5 | GND | 0V electrical ground return terminal (VSS_5) for internal core logic, I/O drivers, and analog sub-blocks. |
| D3 | VDD_5 | Power_In | Primary positive power supply input (VDD_5) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| D4 | PF2 | Digital_IO | Signal terminal PF2 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PF2. Supported peripheral buses: General. |
| D5 | BOOT0 | Digital_IO | Signal terminal BOOT0 (I, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: BOOT0. Supported peripheral buses: General. |
| D6 | PB7 | Digital_IO | Signal terminal PB7 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: I2C1_SDA. Supported peripheral buses: I2C. |
| D7 | PG13 | Digital_IO | Signal terminal PG13 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PG13. Supported peripheral buses: General. |
| D8 | PG10 | Digital_IO | Signal terminal PG10 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PG10. Supported peripheral buses: General. |
| D9 | PD3 | Digital_IO | Signal terminal PD3 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PD3. Supported peripheral buses: General. |
| D10 | PD1 | Digital_IO | Signal terminal PD1 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PD1. Supported peripheral buses: General. |
| D11 | PA10 | Digital_IO | Signal terminal PA10 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PA10. Supported peripheral buses: UART. |
| D12 | PA9 | Digital_IO | Signal terminal PA9 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PA9. Supported peripheral buses: UART. |
| E1 | OSC_OUT | Digital_IO | Signal terminal OSC_OUT (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: OSC_OUT. Supported peripheral buses: RTC/CLK. |
| E2 | PF3 | Digital_IO | Signal terminal PF3 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PF3. Supported peripheral buses: General. |
| E3 | PF4 | Digital_IO | Signal terminal PF4 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PF4. Supported peripheral buses: General. |
| E4 | PF5 | Digital_IO | Signal terminal PF5 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PF5. Supported peripheral buses: General. |
| E5 | VSS_3 | GND | 0V electrical ground return terminal (VSS_3) for internal core logic, I/O drivers, and analog sub-blocks. |
| E6 | VSS_11 | GND | 0V electrical ground return terminal (VSS_11) for internal core logic, I/O drivers, and analog sub-blocks. |
| E7 | VSS_10 | GND | 0V electrical ground return terminal (VSS_10) for internal core logic, I/O drivers, and analog sub-blocks. |
| E8 | PG9 | Digital_IO | Signal terminal PG9 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PG9. Supported peripheral buses: General. |
| E9 | PD2 | Digital_IO | Signal terminal PD2 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PD2. Supported peripheral buses: UART. |
| E10 | PD0 | Digital_IO | Signal terminal PD0 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PD0. Supported peripheral buses: General. |
| E11 | PC9 | Digital_IO | Signal terminal PC9 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC9. Supported peripheral buses: General. |
| E12 | PA8 | Digital_IO | Signal terminal PA8 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PA8. Supported peripheral buses: UART, RTC/CLK. |
| F1 | NRST | Digital_IO | Active-low hardware reset terminal (NRST): pulling this pin Low resets the processor core and peripherals. |
| F2 | PF7 | Digital_IO | Signal terminal PF7 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PF7. Supported peripheral buses: ADC. |
| F3 | PF6 | Digital_IO | Signal terminal PF6 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PF6. Supported peripheral buses: ADC. |
| F4 | VDD_4 | Power_In | Primary positive power supply input (VDD_4) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |












