Mechanical Dimensions & Land Pattern (LQFP-64(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 LQFP-64(7x7) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — CH32V205RCT6 (LQFP-64(7x7))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of CH32V205RCT6 (LQFP-64(7x7))?
Manufactured by WCH, the CH32V205RCT6 is housed in a LQFP-64(7x7) package with 64 pins and a 0.40 mm lead pitch, supporting a VCC supply range of 1.8V~3.6V. Key pins include: 1 (VBAT: Power Supply Input (VBAT — 1.8V~3.6V)), 2 (PC13/TAMPER-RTC: Multiplexed I/O & Peripheral Pin PC13/TAMPER-RTC (RTC/CLK)), 3 (PC14/OSC32IN: Multiplexed I/O & Peripheral Pin PC14/OSC32IN (RTC/CLK)), 4 (PC15/OSC32OUT: Multiplexed I/O & Peripheral Pin PC15/OSC32OUT (RTC/CLK)), 5 (OSC_IN/PD0: Multiplexed I/O & Peripheral Pin OSC_IN/PD0 (RTC/CLK)), 6 (OSC_OUT/PD1: Multiplexed I/O & Peripheral Pin OSC_OUT/PD1 (RTC/CLK)).
What are the IPC-7351B PCB Footprint dimensions for CH32V205RCT6?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), CH32V205RCT6 (LQFP-64(7x7)) has a nominal body envelope of 7.00 × 7.00 mm, pitch e = 0.40 mm, and 64 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for CH32V205RCT6?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for CH32V205RCT6 (WCH, LQFP-64(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 (64 pins) & CH32V205 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 1.8V~3.6V domain (Max rating: 3.6V). |
| 2 | PC13/TAMPER-RTC | Digital_IO | Signal terminal PC13/TAMPER-RTC (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC13/TAMPER-RTC. Supported peripheral buses: RTC/CLK. |
| 3 | PC14/OSC32IN | Digital_IO | Signal terminal PC14/OSC32IN (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC14/OSC32IN. Supported peripheral buses: RTC/CLK. |
| 4 | PC15/OSC32OUT | Digital_IO | Signal terminal PC15/OSC32OUT (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC15/OSC32OUT. Supported peripheral buses: RTC/CLK. |
| 5 | OSC_IN/PD0 | Digital_IO | Signal terminal OSC_IN/PD0 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: OSC_IN/PD0. Supported peripheral buses: RTC/CLK. |
| 6 | OSC_OUT/PD1 | Digital_IO | Signal terminal OSC_OUT/PD1 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: OSC_OUT/PD1. Supported peripheral buses: RTC/CLK. |
| 7 | NRST | Digital_IO | Active-low hardware reset terminal (NRST): pulling this pin Low resets the processor core and peripherals. |
| 8 | PC0/ADC10 | Analog | Signal terminal PC0/ADC10 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC0/ADC10. Supported peripheral buses: ADC. |
| 9 | PC1/ADC11 | Analog | Signal terminal PC1/ADC11 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC1/ADC11. Supported peripheral buses: ADC. |
| 10 | PC2/ADC12 | Analog | Signal terminal PC2/ADC12 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC2/ADC12. Supported peripheral buses: ADC. |
| 11 | PC3/ADC13 | Analog | Signal terminal PC3/ADC13 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC3/ADC13. Supported peripheral buses: ADC. |
| 12 | VSSA | GND | 0V electrical ground return terminal (VSSA) for internal core logic, I/O drivers, and analog sub-blocks. |
| 13 | VREF+ | Analog | Signal terminal VREF+ (Analog, 1.8V~3.6V domain). Multiplexed alternate functions: VREF+. Supported peripheral buses: General. |
| 14 | VDDA | Power_In | Primary positive power supply input (VDDA) operating in the 1.8V~3.6V domain (Max rating: 3.6V). |
| 15 | PA0/CC1/WKUP/ADC0 | Analog | Signal terminal PA0/CC1/WKUP/ADC0 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA0/CC1/WKUP/ADC0. Supported peripheral buses: ADC. |
| 16 | PA1/CC2/ADC1 | Analog | Signal terminal PA1/CC2/ADC1 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA1/CC2/ADC1. Supported peripheral buses: ADC. |
| 17 | PA2/ADC2 | Analog | Signal terminal PA2/ADC2 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA2/ADC2. Supported peripheral buses: ADC. |
| 18 | PA3/ADC3 | Analog | Signal terminal PA3/ADC3 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA3/ADC3. Supported peripheral buses: ADC. |
| 19 | VDD_4 | Power_In | Primary positive power supply input (VDD_4) operating in the 1.8V~3.6V domain (Max rating: 3.6V). |
| 20 | PA4/ADC4 | Analog | Signal terminal PA4/ADC4 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA4/ADC4. Supported peripheral buses: ADC. |
| 21 | PA5/ADC5 | Analog | Signal terminal PA5/ADC5 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA5/ADC5. Supported peripheral buses: ADC. |
| 22 | PA6/ADC6 | Analog | Signal terminal PA6/ADC6 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA6/ADC6. Supported peripheral buses: ADC. |
| 23 | PA7/ADC7 | Analog | Signal terminal PA7/ADC7 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA7/ADC7. Supported peripheral buses: ADC. |
| 24 | PC4/ADC14 | Analog | Signal terminal PC4/ADC14 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC4/ADC14. Supported peripheral buses: ADC. |
| 25 | PC5/ADC15 | Analog | Signal terminal PC5/ADC15 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC5/ADC15. Supported peripheral buses: ADC. |
| 26 | PB0/ADC8 | Analog | Signal terminal PB0/ADC8 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB0/ADC8. Supported peripheral buses: ADC. |
| 27 | PB1/ADC9 | Analog | Signal terminal PB1/ADC9 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB1/ADC9. Supported peripheral buses: ADC. |
| 28 | PB2/BOOT1 | Digital_IO | Signal terminal PB2/BOOT1 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB2/BOOT1. Supported peripheral buses: General. |
| 29 | PB10/P10C0 | Digital_IO | Signal terminal PB10/P10C0 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB10/P10C0. Supported peripheral buses: General. |
| 30 | PB11/P10C1 | Digital_IO | Signal terminal PB11/P10C1 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB11/P10C1. Supported peripheral buses: General. |
| 31 | VSS_1 | GND | 0V electrical ground return terminal (VSS_1) for internal core logic, I/O drivers, and analog sub-blocks. |
| 32 | VIO_1 | Digital_IO | Signal terminal VIO_1 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: VIO_1. Supported peripheral buses: General. |
| 33 | PB12 | Digital_IO | Signal terminal PB12 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB12. Supported peripheral buses: General. |
| 34 | PB13 | Digital_IO | Signal terminal PB13 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB13. Supported peripheral buses: General. |
| 35 | PB14 | Digital_IO | Signal terminal PB14 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB14. Supported peripheral buses: General. |
| 36 | PB15 | Digital_IO | Signal terminal PB15 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB15. Supported peripheral buses: General. |
| 37 | PC6 | Digital_IO | Signal terminal PC6 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC6. Supported peripheral buses: General. |
| 38 | PC7 | Digital_IO | Signal terminal PC7 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC7. Supported peripheral buses: General. |
| 39 | PC8 | Digital_IO | Signal terminal PC8 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC8. Supported peripheral buses: General. |
| 40 | PC9 | Digital_IO | Signal terminal PC9 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC9. Supported peripheral buses: General. |
| 41 | PA8 | Digital_IO | Signal terminal PA8 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA8. Supported peripheral buses: General. |
| 42 | PA9 | Digital_IO | Signal terminal PA9 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA9. Supported peripheral buses: General. |
| 43 | PA10 | Digital_IO | Signal terminal PA10 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA10. Supported peripheral buses: General. |
| 44 | PA11/USB1DM/PIOC0 | Digital_IO | Signal terminal PA11/USB1DM/PIOC0 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA11/USB1DM/PIOC0. Supported peripheral buses: USB. |
| 45 | PA12/USB1DP/PIOC1 | Digital_IO | Signal terminal PA12/USB1DP/PIOC1 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA12/USB1DP/PIOC1. Supported peripheral buses: USB. |
| 46 | PA13/SWDIO | Digital_IO | Signal terminal PA13/SWDIO (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA13/SWDIO. Supported peripheral buses: SWD/JTAG. |
| 47 | VSS_2 | GND | 0V electrical ground return terminal (VSS_2) for internal core logic, I/O drivers, and analog sub-blocks. |
| 48 | VDD_2 | Power_In | Primary positive power supply input (VDD_2) operating in the 1.8V~3.6V domain (Max rating: 3.6V). |
| 49 | PA14/SWCLK | Digital_IO | Signal terminal PA14/SWCLK (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA14/SWCLK. Supported peripheral buses: SWD/JTAG. |
| 50 | PA15 | Digital_IO | Signal terminal PA15 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PA15. Supported peripheral buses: General. |
| 51 | PC10 | Digital_IO | Signal terminal PC10 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC10. Supported peripheral buses: General. |
| 52 | PC11 | Digital_IO | Signal terminal PC11 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC11. Supported peripheral buses: General. |
| 53 | PC12 | Digital_IO | Signal terminal PC12 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PC12. Supported peripheral buses: General. |
| 54 | PD2 | Digital_IO | Signal terminal PD2 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PD2. Supported peripheral buses: General. |
| 55 | PB3 | Digital_IO | Signal terminal PB3 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB3. Supported peripheral buses: General. |
| 56 | PB4 | Digital_IO | Signal terminal PB4 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB4. Supported peripheral buses: General. |
| 57 | PB5 | Digital_IO | Signal terminal PB5 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB5. Supported peripheral buses: General. |
| 58 | PB7/USB2_DM | Digital_IO | Signal terminal PB7/USB2_DM (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB7/USB2_DM. Supported peripheral buses: USB. |
| 59 | PB6/USB2_DP | Digital_IO | Signal terminal PB6/USB2_DP (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB6/USB2_DP. Supported peripheral buses: USB. |
| 60 | PB8 | Digital_IO | Signal terminal PB8 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB8. Supported peripheral buses: General. |
| 61 | PB9 | Digital_IO | Signal terminal PB9 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PB9. Supported peripheral buses: General. |
| 62 | PE0 | Digital_IO | Signal terminal PE0 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: PE0. Supported peripheral buses: General. |
| 63 | VSS_3 | GND | 0V electrical ground return terminal (VSS_3) for internal core logic, I/O drivers, and analog sub-blocks. |
| 64 | VIO_3 | Digital_IO | Signal terminal VIO_3 (I/O, 1.8V~3.6V domain). Multiplexed alternate functions: VIO_3. Supported peripheral buses: General. |












