Mechanical Dimensions & Land Pattern (LFBGA-100)
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 |
|---|---|---|
| N/A BOM | Per application circuit LFBGA-100 | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — ATSAM3X8CA-CU (LFBGA-100)
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of ATSAM3X8CA-CU (LFBGA-100)?
Manufactured by MICROCHIP, the ATSAM3X8CA-CU is housed in a LFBGA-100 package with 100 pins and a 0.80 mm lead pitch, supporting a VCC supply range of 1.62V to 3.6V. Key pins include: A1 (PB26: Multiplexed I/O & Peripheral Pin PB26 (General)), A2 (PB24: Multiplexed I/O & Peripheral Pin PB24 (General)), A3 (PB22: Multiplexed I/O & Peripheral Pin PB22 (General)), A4 (PB14: Multiplexed I/O & Peripheral Pin PB14 (General)), A5 (PC0: Multiplexed I/O & Peripheral Pin PC0 (General)), A6 (PB9: Multiplexed I/O & Peripheral Pin PB9 (General)).
What are the IPC-7351B PCB Footprint dimensions for ATSAM3X8CA-CU?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ATSAM3X8CA-CU (LFBGA-100) has a nominal body envelope of 9.00 × 9.00 mm, pitch e = 0.80 mm, and 100 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for ATSAM3X8CA-CU?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ATSAM3X8CA-CU (MICROCHIP, LFBGA-100) 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 (100 pins) & ATSAM3X8CA Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| A1 | PB26 | Digital_IO | Signal terminal PB26 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB26. Supported peripheral buses: General. |
| A2 | PB24 | Digital_IO | Signal terminal PB24 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB24. Supported peripheral buses: General. |
| A3 | PB22 | Digital_IO | Signal terminal PB22 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB22. Supported peripheral buses: General. |
| A4 | PB14 | Digital_IO | Signal terminal PB14 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB14. Supported peripheral buses: General. |
| A5 | PC0 | Digital_IO | Signal terminal PC0 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PC0. Supported peripheral buses: General. |
| A6 | PB9 | Digital_IO | Signal terminal PB9 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB9. Supported peripheral buses: General. |
| A7 | PB6 | Digital_IO | Signal terminal PB6 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB6. Supported peripheral buses: General. |
| A8 | PB2 | Digital_IO | Signal terminal PB2 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB2. Supported peripheral buses: General. |
| A9 | PA28 | Digital_IO | Signal terminal PA28 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA28. Supported peripheral buses: General. |
| A10 | PA26 | Digital_IO | Signal terminal PA26 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA26. Supported peripheral buses: General. |
| B1 | PA11 | Digital_IO | Signal terminal PA11 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA11. Supported peripheral buses: General. |
| B2 | PB25 | Digital_IO | Signal terminal PB25 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB25. Supported peripheral buses: General. |
| B3 | PB23 | Digital_IO | Signal terminal PB23 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB23. Supported peripheral buses: General. |
| B4 | PA10 | Digital_IO | Signal terminal PA10 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA10. Supported peripheral buses: General. |
| B5 | PA9 | Digital_IO | Signal terminal PA9 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA9. Supported peripheral buses: General. |
| B6 | PB10 | Digital_IO | Signal terminal PB10 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB10. Supported peripheral buses: General. |
| B7 | PB7 | Digital_IO | Signal terminal PB7 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB7. Supported peripheral buses: General. |
| B8 | PB3 | Digital_IO | Signal terminal PB3 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB3. Supported peripheral buses: General. |
| B9 | PA29 | Digital_IO | Signal terminal PA29 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA29. Supported peripheral buses: General. |
| B10 | PA27 | Digital_IO | Signal terminal PA27 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA27. Supported peripheral buses: General. |
| C1 | PA12 | Digital_IO | Signal terminal PA12 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA12. Supported peripheral buses: General. |
| C2 | PA14 | Digital_IO | Signal terminal PA14 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA14. Supported peripheral buses: General. |
| C3 | PA13 | Digital_IO | Signal terminal PA13 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA13. Supported peripheral buses: General. |
| C4 | PA17 | Digital_IO | Signal terminal PA17 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA17. Supported peripheral buses: General. |
| C5 | PA15 | Digital_IO | Signal terminal PA15 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA15. Supported peripheral buses: General. |
| C6 | PB11 | Digital_IO | Signal terminal PB11 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB11. Supported peripheral buses: General. |
| C7 | PB8 | Digital_IO | Signal terminal PB8 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB8. Supported peripheral buses: General. |
| C8 | PB4 | Digital_IO | Signal terminal PB4 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB4. Supported peripheral buses: General. |
| C9 | PB0 | Digital_IO | Signal terminal PB0 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB0. Supported peripheral buses: General. |
| C10 | PA25 | Digital_IO | Signal terminal PA25 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA25. Supported peripheral buses: General. |
| D1 | PA5 | Digital_IO | Signal terminal PA5 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA5. Supported peripheral buses: General. |
| D2 | PA0 | Digital_IO | Signal terminal PA0 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA0. Supported peripheral buses: General. |
| D3 | PA1 | Digital_IO | Signal terminal PA1 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA1. Supported peripheral buses: General. |
| D4 | VDDCORE | Power_In | Primary positive power supply input (VDDCORE) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| D5 | VDDIO | Power_In | Primary positive power supply input (VDDIO) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| D6 | VDDCORE | Power_In | Primary positive power supply input (VDDCORE) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| D7 | VDDCORE | Power_In | Primary positive power supply input (VDDCORE) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| D8 | PB5 | Digital_IO | Signal terminal PB5 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB5. Supported peripheral buses: General. |
| D9 | PB1 | Digital_IO | Signal terminal PB1 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB1. Supported peripheral buses: General. |
| D10 | PA21 | Digital_IO | Signal terminal PA21 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA21. Supported peripheral buses: General. |
| E1 | PB28 | Digital_IO | Signal terminal PB28 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB28. Supported peripheral buses: General. |
| E2 | PA7 | Digital_IO | Signal terminal PA7 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA7. Supported peripheral buses: General. |
| E3 | PA8 | Digital_IO | Signal terminal PA8 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PA8. Supported peripheral buses: General. |
| E4 | VDDCORE | Power_In | Primary positive power supply input (VDDCORE) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| E5 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| E6 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| E7 | VDDIO | Power_In | Primary positive power supply input (VDDIO) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| E8 | PB19 | Digital_IO | Signal terminal PB19 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB19. Supported peripheral buses: General. |
| E9 | PB20 | Digital_IO | Signal terminal PB20 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB20. Supported peripheral buses: General. |
| E10 | PB21 | Digital_IO | Signal terminal PB21 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB21. Supported peripheral buses: General. |
| F1 | VDDPLL | Power_In | Primary positive power supply input (VDDPLL) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| F2 | GNDPLL | GND | 0V electrical ground return terminal (GNDPLL) for internal core logic, I/O drivers, and analog sub-blocks. |
| F3 | PB30 | Digital_IO | Signal terminal PB30 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB30. Supported peripheral buses: General. |
| F4 | PB29 | Digital_IO | Signal terminal PB29 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB29. Supported peripheral buses: General. |
| F5 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| F6 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| F7 | VDDIO | Power_In | Primary positive power supply input (VDDIO) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| F8 | PB13 | Digital_IO | Signal terminal PB13 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB13. Supported peripheral buses: General. |
| F9 | PB17 | Digital_IO | Signal terminal PB17 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB17. Supported peripheral buses: General. |
| F10 | PB18 | Digital_IO | Signal terminal PB18 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB18. Supported peripheral buses: General. |
| G1 | XOUT | Digital_IO | Signal terminal XOUT (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: XOUT. Supported peripheral buses: RTC/CLK. |
| G2 | VDDUTMI | Power_In | Primary positive power supply input (VDDUTMI) operating in the 1.62V to 3.6V domain (Max rating: 3.6V). |
| G3 | PB31 | Digital_IO | Signal terminal PB31 (I/O, 1.62V to 3.6V domain). Multiplexed alternate functions: PB31. Supported peripheral buses: General. |
| G4 | GNDBU | GND | 0V electrical ground return terminal (GNDBU) for internal core logic, I/O drivers, and analog sub-blocks. |










