Mechanical Dimensions & Land Pattern (LQFP-48(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-48(7x7) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — CH567L (LQFP-48(7x7))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of CH567L (LQFP-48(7x7))?
Manufactured by WCH, the CH567L is housed in a LQFP-48(7x7) package with 48 pins and a 0.50 mm lead pitch. Key pins include: 1 (PA1: Multiplexed I/O & Peripheral Pin PA1 (SPI)), 2 (PA0: Multiplexed I/O & Peripheral Pin PA0 (SPI)), 3 (V33IO1: Power Supply Input (V33IO1 — 3.3V / 5.0V Standard Logic)), 4 (PB7: Multiplexed I/O & Peripheral Pin PB7 (General)), 5 (PB6: Multiplexed I/O & Peripheral Pin PB6 (General)), 6 (PB5: Multiplexed I/O & Peripheral Pin PB5 (General)).
What are the IPC-7351B PCB Footprint dimensions for CH567L?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), CH567L (LQFP-48(7x7)) 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 CH567L?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for CH567L (WCH, LQFP-48(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 (48 pins) & CH567 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | PA1 | Digital_IO | Signal terminal PA1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: SPI1SERIALDATAPIN. Supported peripheral buses: SPI. |
| 2 | PA0 | Digital_IO | Signal terminal PA0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: SPI1SERIALCLOCKPIN. Supported peripheral buses: SPI. |
| 3 | V33IO1 | Power_In | Primary positive power supply input (V33IO1) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| 4 | PB7 | Digital_IO | Signal terminal PB7 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB7. Supported peripheral buses: General. |
| 5 | PB6 | Digital_IO | Signal terminal PB6 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB6. Supported peripheral buses: General. |
| 6 | PB5 | Digital_IO | Signal terminal PB5 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB5. Supported peripheral buses: General. |
| 7 | PB4 | Digital_IO | Signal terminal PB4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB4. Supported peripheral buses: General. |
| 8 | PB3 | Digital_IO | Signal terminal PB3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB3. Supported peripheral buses: General. |
| 9 | PB2 | Digital_IO | Signal terminal PB2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB2. Supported peripheral buses: General. |
| 10 | PB1 | Digital_IO | Signal terminal PB1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB1. Supported peripheral buses: General. |
| 11 | PB0 | Digital_IO | Signal terminal PB0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB0. Supported peripheral buses: General. |
| 12 | RUSB0 | Digital_IO | Signal terminal RUSB0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: RUSB0. Supported peripheral buses: General. |
| 13 | UDP0 | Digital_IO | Signal terminal UDP0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: UDP0. Supported peripheral buses: General. |
| 14 | UDM0 | Digital_IO | Signal terminal UDM0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: UDM0. Supported peripheral buses: General. |
| 15 | V33USB | Power_In | Primary positive power supply input (V33USB) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| 16 | XO | Digital_IO | Signal terminal XO (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: XO. Supported peripheral buses: RTC/CLK. |
| 17 | XI | Digital_IO | Signal terminal XI (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: XI. Supported peripheral buses: RTC/CLK. |
| 18 | RUSB1 | Digital_IO | Signal terminal RUSB1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: RUSB1. Supported peripheral buses: General. |
| 19 | UDP1 | Digital_IO | Signal terminal UDP1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: UDP1. Supported peripheral buses: General. |
| 20 | UDM1 | Digital_IO | Signal terminal UDM1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: UDM1. Supported peripheral buses: General. |
| 21 | V33IO3 | Power_In | Primary positive power supply input (V33IO3) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| 22 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 23 | VCORE | Digital_IO | Signal terminal VCORE (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VCORE. Supported peripheral buses: General. |
| 24 | PB11 | Digital_IO | Signal terminal PB11 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB11. Supported peripheral buses: General. |
| 25 | PB12 | Digital_IO | Signal terminal PB12 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB12. Supported peripheral buses: General. |
| 26 | PB13 | Digital_IO | Signal terminal PB13 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB13. Supported peripheral buses: General. |
| 27 | PB8 | Digital_IO | Signal terminal PB8 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB8. Supported peripheral buses: General. |
| 28 | PB9 | Digital_IO | Signal terminal PB9 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB9. Supported peripheral buses: General. |
| 29 | PB10 | Digital_IO | Signal terminal PB10 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PB10. Supported peripheral buses: General. |
| 30 | RST# | Digital_IO | Signal terminal RST# (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: RST#. Supported peripheral buses: General. |
| 31 | PA3 | Digital_IO | Signal terminal PA3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA3. Supported peripheral buses: General. |
| 32 | PA4 | Digital_IO | Signal terminal PA4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA4. Supported peripheral buses: General. |
| 33 | PA5 | Digital_IO | Signal terminal PA5 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA5. Supported peripheral buses: General. |
| 34 | PA6 | Digital_IO | Signal terminal PA6 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA6. Supported peripheral buses: General. |
| 35 | PA7 | Digital_IO | Signal terminal PA7 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA7. Supported peripheral buses: General. |
| 36 | PA8 | Digital_IO | Signal terminal PA8 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA8. Supported peripheral buses: General. |
| 37 | PA10 | Digital_IO | Signal terminal PA10 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA10. Supported peripheral buses: General. |
| 38 | PA11 | Digital_IO | Signal terminal PA11 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA11. Supported peripheral buses: General. |
| 39 | V33IO2 | Power_In | Primary positive power supply input (V33IO2) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| 40 | PA9 | Digital_IO | Signal terminal PA9 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA9. Supported peripheral buses: General. |
| 41 | V33REG | Power_In | Primary positive power supply input (V33REG) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| 42 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 43 | VCORE | Digital_IO | Signal terminal VCORE (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VCORE. Supported peripheral buses: General. |
| 44 | PA15 | Digital_IO | Signal terminal PA15 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA15. Supported peripheral buses: General. |
| 45 | PA14 | Digital_IO | Signal terminal PA14 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA14. Supported peripheral buses: General. |
| 46 | PA13 | Digital_IO | Signal terminal PA13 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA13. Supported peripheral buses: General. |
| 47 | PA12 | Digital_IO | Signal terminal PA12 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA12. Supported peripheral buses: General. |
| 48 | PA2 | Digital_IO | Signal terminal PA2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: PA2. Supported peripheral buses: General. |






