4 layers289.4 × 318 mm
2 layers27.5 × 24 mm
Uswc
crides/uswcA debug probe that passes SWD thru USBC
- Size
- 27.5 × 24 mm
- Copper layers
- 2
- Thickness
- 0.8 mm
- Parts
- 50
- Nets
- 77
- Pads
- 252
- Tracks, vias
- 684, 107
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 Jan 2025
- Updated
- 8 Sep 2026
Overview
Uswc is an open-source printed circuit board by crides, from the crides/uswc repository on GitHub. It is a 2-layer board of 27.5 × 24 mm with 50 parts on 77 nets, routed with 684 tracks and 107 vias.
It is built around the RP2040, LMV321 and W25Q32JVZPIQ, with the SN74LVC1T45DBV, SRV05-4 and CH334F among its other parts. Its parts include 17 capacitors, 12 resistors, 10 ICs, 3 connectors and 1 diode. It belongs with the RP2040 boards of this library.
Main components
6
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
LMV321
SOT-23-5L-2.75V~-1.25V、1.25V~2.75V 0℃~+70℃ 1 10pA 10pA 1MHz 2.1V~5.5V 20mA 20nV/√Hz@10kHz 520V/ms 60uA 70dB 800uV Built-in compensation Rail-to-Rail Input, Rail-to-Rail Output SOT-23-5L Operational Amplifier ROHSJiangsu Changjing Electronics Technology (CJ)Operational Amplifier
W25Q32JVZPIQ
WSON-8-EP(5x6)-40℃~+85℃ 100,000 cycles 10uA 133MHz 2.7V~3.6V 20 Years 32Mbit 3ms SPI WSON-8-EP(5x6) NOR FLASH ROHSWinbondNOR FLASH
SN74LVC1T45DBV
SOT-23-6-40℃~+85℃ 1 1 1.65V~5.5V 1.65V~5.5V 420Mbps Bidirectional Tri-State SOT-23-6 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level ShiftersSRV05-4
SOT-23-6L-55℃~+150℃ 15V 1pF 4A 5V 5uA 6V 80W ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT-23-6L ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
CH334F
QFN-24(4x4)-40℃~+85℃ 0.4mA 3.3V、5V 4 480Mbps 85mA Hub I2C USB 2.0 QFN-24(4x4) USB HUB Controllers ROHSWCH (Nanjing Qinheng Microelectronics)USB HUB Controllers
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C3, C4, C6, C8, C9, C10, C11, C12 |
| 3 | 1uF | Capacitor_SMD:C_0603_1608Metric | C1, C19, C20 |
| 2 | + | TestPoint:TestPoint_Pad_D1.0mm | TP4, TP5 |
| 2 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C2, C5 |
| 2 | 10p | Capacitor_SMD:C_0603_1608Metric | C16, C17 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R7, R15 |
| 2 | 27 | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | 36k | Resistor_SMD:R_0603_1608Metric | R8, R9 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | SN74LVC1T45DBV | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U3, U6 |
| 2 | SRV05-4 | Package_TO_SOT_SMD:SOT-23-6 | U9, U10 |
| 1 | - | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C14 |
| 1 | 118k | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 12MHz 10ppm | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y2 |
| 1 | 150u | Capacitor_SMD:C_1206_3216Metric | C15 |
| 1 | 56k | Resistor_SMD:R_0603_1608Metric | R14 |
| 1 | 64.9k | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | CH334F | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm | U7 |
| 1 | Conn_01x02_Socket | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | J2 |
| 1 | DFP | lib:jingtuojin_918-118A2021Y40005-no-ss | P1 |
| 1 | FerriteBead | Inductor_SMD:L_0805_2012Metric | FB1 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | LMV321 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U1 |
| 1 | MCP1824 | Package_TO_SOT_SMD:TSOT-23-5 | U8 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U4 |
| 1 | SBU_C | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | SBU_D | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | W25Q32JVZP | Package_SON:Winbond_USON-8-1EP_3x2mm_P0.5mm_EP0.2x1.6mm | U2 |
| 1 | XC6206PxxxMR | Package_TO_SOT_SMD:SOT-23-3 | U5 |
Questions
How big is the Uswc PCB?
It measures 27.5 × 24 mm and has 2 copper layers, 0.8 mm thick.
What parts does the Uswc use?
50 parts, built around the RP2040, LMV321, W25Q32JVZPIQ and SN74LVC1T45DBV. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Uswc KiCad files?
From the crides/uswc repository on GitHub, at the commit this page was made from: the board is uswc.kicad_pcb and its schematic uswc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Uswc design in my own project?
Its repository states no licence, so its author keeps all rights: ask crides before reusing the design.
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