Mechanical Dimensions & Land Pattern (QFN-68(7x7))
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 QFN-68(7x7) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — CH32X315WCU6 (QFN-68(7x7))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of CH32X315WCU6 (QFN-68(7x7))?
Manufactured by WCH, the CH32X315WCU6 is housed in a QFN-68(7x7) package with 69 pins and a 0.35 mm lead pitch. Key pins include: 1 (XI/PD0: Multiplexed I/O & Peripheral Pin XI/PD0 (RTC/CLK)), 2 (XO/PD1: Multiplexed I/O & Peripheral Pin XO/PD1 (RTC/CLK)), 3 (PD14/ADC36: Multiplexed I/O & Peripheral Pin PD14/ADC36 (ADC)), 4 (PD15/ADC37: Multiplexed I/O & Peripheral Pin PD15/ADC37 (ADC)), 5 (PC0/ADC38: Multiplexed I/O & Peripheral Pin PC0/ADC38 (ADC)), 6 (PC1/ADC39: Multiplexed I/O & Peripheral Pin PC1/ADC39 (ADC)).
What are the IPC-7351B PCB Footprint dimensions for CH32X315WCU6?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), CH32X315WCU6 (QFN-68(7x7)) has a nominal body envelope of 7.00 × 7.00 mm, pitch e = 0.35 mm, and 69 copper pads plus a central exposed thermal pad (EPAD) of 5.50 × 5.50 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 CH32X315WCU6?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for CH32X315WCU6 (WCH, QFN-68(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 (69 pins) & CH32X315 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | XI/PD0 | Digital_IO | Signal terminal XI/PD0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: XI/PD0. Supported peripheral buses: RTC/CLK. |
| 2 | XO/PD1 | Digital_IO | Signal terminal XO/PD1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: XO/PD1. Supported peripheral buses: RTC/CLK. |
| 3 | PD14/ADC36 | Analog | Signal terminal PD14/ADC36 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD14/ADC36. Supported peripheral buses: ADC. |
| 4 | PD15/ADC37 | Analog | Signal terminal PD15/ADC37 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD15/ADC37. Supported peripheral buses: ADC. |
| 5 | PC0/ADC38 | Analog | Signal terminal PC0/ADC38 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC0/ADC38. Supported peripheral buses: ADC. |
| 6 | PC1/ADC39 | Analog | Signal terminal PC1/ADC39 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC1/ADC39. Supported peripheral buses: ADC. |
| 7 | PC2/ADC40 | Analog | Signal terminal PC2/ADC40 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC2/ADC40. Supported peripheral buses: ADC. |
| 8 | PC3/ADC41 | Analog | Signal terminal PC3/ADC41 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC3/ADC41. Supported peripheral buses: ADC. |
| 9 | PC4/ADC42 | Analog | Signal terminal PC4/ADC42 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC4/ADC42. Supported peripheral buses: ADC. |
| 10 | PC5/ADC43 | Analog | Signal terminal PC5/ADC43 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC5/ADC43. Supported peripheral buses: ADC. |
| 11 | PC6/ADC44 | Analog | Signal terminal PC6/ADC44 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC6/ADC44. Supported peripheral buses: ADC. |
| 12 | PC7/ADC45 | Analog | Signal terminal PC7/ADC45 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC7/ADC45. Supported peripheral buses: ADC. |
| 13 | VREF+ | Analog | Signal terminal VREF+ (Analog, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VREF+. Supported peripheral buses: General. |
| 14 | VDD/VDDA | Power_In | Primary positive power supply input (VDD/VDDA) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| 15 | PA0/ADC46 | Analog | Signal terminal PA0/ADC46 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA0/ADC46. Supported peripheral buses: ADC. |
| 16 | PA1/ADC47 | Analog | Signal terminal PA1/ADC47 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA1/ADC47. Supported peripheral buses: ADC. |
| 17 | PA2/ADC0 | Analog | Signal terminal PA2/ADC0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA2/ADC0. Supported peripheral buses: ADC. |
| 18 | PA3/ADC1 | Analog | Signal terminal PA3/ADC1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA3/ADC1. Supported peripheral buses: ADC. |
| 19 | PA4/ADC2 | Analog | Signal terminal PA4/ADC2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA4/ADC2. Supported peripheral buses: ADC. |
| 20 | PA5/ADC3 | Analog | Signal terminal PA5/ADC3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA5/ADC3. Supported peripheral buses: ADC. |
| 21 | PA6/ADC4 | Analog | Signal terminal PA6/ADC4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA6/ADC4. Supported peripheral buses: ADC. |
| 22 | PA7/ADC5 | Analog | Signal terminal PA7/ADC5 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA7/ADC5. Supported peripheral buses: ADC. |
| 23 | PB0/ADC6 | Analog | Signal terminal PB0/ADC6 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB0/ADC6. Supported peripheral buses: ADC. |
| 24 | PB1/ADC7 | Analog | Signal terminal PB1/ADC7 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB1/ADC7. Supported peripheral buses: ADC. |
| 25 | PB2/ADC8 | Analog | Signal terminal PB2/ADC8 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB2/ADC8. Supported peripheral buses: ADC. |
| 26 | PB3/ADC9 | Analog | Signal terminal PB3/ADC9 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB3/ADC9. Supported peripheral buses: ADC. |
| 27 | PB4/ADC10 | Analog | Signal terminal PB4/ADC10 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB4/ADC10. Supported peripheral buses: ADC. |
| 28 | PB5/ADC11 | Analog | Signal terminal PB5/ADC11 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB5/ADC11. Supported peripheral buses: ADC. |
| 29 | PB6/ADC12 | Analog | Signal terminal PB6/ADC12 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB6/ADC12. Supported peripheral buses: ADC. |
| 30 | PB7/ADC13 | Analog | Signal terminal PB7/ADC13 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB7/ADC13. Supported peripheral buses: ADC. |
| 31 | PC8/ADC14 | Analog | Signal terminal PC8/ADC14 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC8/ADC14. Supported peripheral buses: ADC. |
| 32 | PC9/ADC15 | Analog | Signal terminal PC9/ADC15 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC9/ADC15. Supported peripheral buses: ADC. |
| 33 | PC10/ADC16 | Analog | Signal terminal PC10/ADC16 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC10/ADC16. Supported peripheral buses: ADC. |
| 34 | PC11/ADC17 | Analog | Signal terminal PC11/ADC17 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC11/ADC17. Supported peripheral buses: ADC. |
| 35 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| 36 | PC12/ADC18 | Analog | Signal terminal PC12/ADC18 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC12/ADC18. Supported peripheral buses: ADC. |
| 37 | PC13/ADC19 | Analog | Signal terminal PC13/ADC19 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC13/ADC19. Supported peripheral buses: ADC. |
| 38 | PC14/ADC20 | Analog | Signal terminal PC14/ADC20 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC14/ADC20. Supported peripheral buses: ADC. |
| 39 | PC15/ADC21 | Analog | Signal terminal PC15/ADC21 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PC15/ADC21. Supported peripheral buses: ADC. |
| 40 | PB8/ADC22 | Analog | Signal terminal PB8/ADC22 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB8/ADC22. Supported peripheral buses: ADC. |
| 41 | PB9/ADC23 | Analog | Signal terminal PB9/ADC23 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB9/ADC23. Supported peripheral buses: ADC. |
| 42 | PB10/ADC24 | Analog | Signal terminal PB10/ADC24 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB10/ADC24. Supported peripheral buses: ADC. |
| 43 | PB11/ADC25 | Analog | Signal terminal PB11/ADC25 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB11/ADC25. Supported peripheral buses: ADC. |
| 44 | PD8/ADC26 | Analog | Signal terminal PD8/ADC26 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD8/ADC26. Supported peripheral buses: ADC. |
| 45 | PD9/ADC27 | Analog | Signal terminal PD9/ADC27 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD9/ADC27. Supported peripheral buses: ADC. |
| 46 | PD10/ADC28 | Analog | Signal terminal PD10/ADC28 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD10/ADC28. Supported peripheral buses: ADC. |
| 47 | PD11/ADC29 | Analog | Signal terminal PD11/ADC29 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD11/ADC29. Supported peripheral buses: ADC. |
| 48 | PD12/ADC30 | Analog | Signal terminal PD12/ADC30 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD12/ADC30. Supported peripheral buses: ADC. |
| 49 | PD13/ADC31 | Analog | Signal terminal PD13/ADC31 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD13/ADC31. Supported peripheral buses: ADC. |
| 50 | PA8/ADC32 | Analog | Signal terminal PA8/ADC32 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA8/ADC32. Supported peripheral buses: ADC. |
| 51 | PA9/ADC33 | Analog | Signal terminal PA9/ADC33 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA9/ADC33. Supported peripheral buses: ADC. |
| 52 | PA10/ADCS0 | Analog | Signal terminal PA10/ADCS0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA10/ADCS0. Supported peripheral buses: ADC. |
| 53 | PA11/ADCS1 | Analog | Signal terminal PA11/ADCS1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA11/ADCS1. Supported peripheral buses: ADC. |
| 54 | PA12/ADCS2 | Analog | Signal terminal PA12/ADCS2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA12/ADCS2. Supported peripheral buses: ADC. |
| 55 | PA13/SWDIO | Digital_IO | Signal terminal PA13/SWDIO (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA13/SWDIO. Supported peripheral buses: SWD/JTAG. |
| 56 | PA14/SWCLK | Digital_IO | Signal terminal PA14/SWCLK (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA14/SWCLK. Supported peripheral buses: SWD/JTAG. |
| 57 | PA15/ARGB | Digital_IO | Signal terminal PA15/ARGB (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA15/ARGB. Supported peripheral buses: General. |
| 58 | PD3 | Digital_IO | Signal terminal PD3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD3. Supported peripheral buses: General. |
| 59 | PD4/CC1/ADC34 | Analog | Signal terminal PD4/CC1/ADC34 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD4/CC1/ADC34. Supported peripheral buses: ADC. |
| 60 | PD5/CC2/ADC35 | Analog | Signal terminal PD5/CC2/ADC35 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD5/CC2/ADC35. Supported peripheral buses: ADC. |
| 61 | PD6/USB2DM | Digital_IO | Signal terminal PD6/USB2DM (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD6/USB2DM. Supported peripheral buses: USB. |
| 62 | PD7/USB2DP | Digital_IO | Signal terminal PD7/USB2DP (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PD7/USB2DP. Supported peripheral buses: USB. |
| 63 | SSTXB | Digital_IO | Signal terminal SSTXB (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: SSTXB. Supported peripheral buses: General. |
| 64 | SSTXA | Digital_IO | Signal terminal SSTXA (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: SSTXA. Supported peripheral buses: General. |









