openhwfoundation/core-v-mcu-devkit18This is the CORE-V MCU DevKit project, hosting the open-source artifacts for the CORE-V MCU Development Kit.
OpenHW DevKit is an open-source printed circuit board by openhwfoundation, from the openhwfoundation/core-v-mcu-devkit repository on GitHub. It is a 4-layer board of 100 × 75 mm with 235 parts on 217 nets, routed with 1,714 tracks and 286 vias.
It is built around the ESP32-C3-MINI-1, FT2232HL-REEL and MCP9808-E/MS, with the W25Q32JWZPIQ, MP6400DG-01-LF-Z and AMS1117-3.3 among its other parts. Its parts include 54 capacitors, 41 resistors, 20 ICs, 13 connectors and 12 diodes. It belongs with the interfaces and adapters boards and the ESP32 and RISC-V boards of this library.
The CORE-V MCU DevKit is an evaluation platform for the OpenHW RISC-V CV32E40P core IP (v1.0.0). More information can be found at the CV32E40P repo.
This devkit has the following features:
The devkit can be powered from 5 - 18V. This can be easily accomplished via the 2.1mm DC barrel jack. The USB-C connector will negotiate 5v from the USB source.
The CORE-V-MCU has a 1.8v I/O pad ring. The 3.3v peripherals are interfaced to the 1.8v MCU with 7 level shifters. The pins directly around the MCU are connected directly to the MCU pads and will be 1.8v logic. The QSPI program flash memory is also at 1.8v logic. The JTAG interface to the Ashling Opella LD is level shifted. The enable signals on the JTAG level shifters is connected to jumper J4. Inserting a jumper will disable the level shifters to the on-board JTAG interface allowing the JTAG header to be used.
Note: the JTAG header is directly connected to the CORE-V-MCU and will require 1.8v logic.
The microBUS header provides a UART, GPIO, I2C and SPI interface. The UART interface is shared with the AWS IoT ExpressLink. The CORE-V-MCU has an I/O multiplexer and an alternate pin mode allows the UART interface to be switched between two sets of I/O pins.
The microBUS is fully wired except for the 5v power option. 5v is not available to microBUS so ensure any CLICK's are configured for 3.3v.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 63 | TestPoint_Small | TestPoint:TestPoint_Pad_D1.0mm | TP10, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18, TP19, TP25, TP27, TP28, TP29, TP30, TP31 +47 |
| 33 | 100nF | Capacitor_SMD:C_0603_1608Metric | C4, C12, C13, C14, C15, C16, C17, C18, C19, C20, C28, C29, C31, C34, C40, C41 +17 |
| 7 | 10k | Resistor_SMD:R_0603_1608Metric | R35, R37, R39, R41, R43, R44, R45 |
| 6 | 4.7k | Resistor_SMD:R_0603_1608Metric | R15, R16, R19, R20, R25, R40 |
| 6 | NTB0104BQ,115 | NTB0104:NXP_Semiconductors-SOT762-1-08_2019-0-MFG | U6, U7, U8, U9, U10, U13 |
| 6 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1, JP2, JP6, JP7, JP8, JP9 |
| 5 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R27, R28, R29, R42 |
| 4 | 10uF | Capacitor_SMD:C_0603_1608Metric | C3, C5, C33, C69 |
| 4 | 12.5pF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C7, C8 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric | C24, C36, C37, C82 |
| 4 | 2.2k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R7, R9, R26 |
| 4 | 47k | Resistor_SMD:R_0603_1608Metric | R11, R12, R13, R14 |
| 4 | Conn_01x20 | Connector_PinHeader_1.00mm:PinHeader_1x20_P1.00mm_Vertical | J7, J8, J9, J10 |
| 4 | MountingHole | MountingHole:MountingHole_2.7mm_M2.5 | H1, H2, H3, H4 |
| 3 | 150pF | Capacitor_SMD:C_0603_1608Metric | C21, C22, C23 |
| 3 | 5.1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3, R5 |
| 3 | ESD9B5.0ST5G | Diode_SMD:D_SOD-923 | D1, D2, D4 |
| 3 | LED_Small | LED_SMD:LED_0603_1608Metric | D5, D6, D7 |
| 3 | MP6400DG-01-LF-Z | MP6400:QFN6_MP6400_MNP | U5, U15, U16 |
| 3 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP3, JP4, JP5 |
| 2 | 100n | Capacitor_SMD:C_0603_1608Metric | C32, C35 |
| 2 | 1N914WT | Diode_SMD:D_SOD-523 | D10, D12 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R8, R21 |
| 2 | 220 | Resistor_SMD:R_0603_1608Metric | R17, R22 |
| 2 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C10, C11 |
| 2 | BAT760-7 | diode:Diodes-SOD323-03_2017-0-0 | D3, D11 |
| 2 | Conn_01x02_Male | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4, J11 |
| 2 | Ferrite_Bead_Small | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1, FB2 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D8, D9 |
| 2 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | SW_Push | Button:TS204225WT160SMTTR | SW1, SW2 |
| 1 | 0v8 | TestPoint:TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP5 |
| 1 | 100 | Resistor_SMD:R_0603_1608Metric | R23 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric | R24 |
| 1 | 12MHz | Crystal:Crystal_SMD_Abracon_ABM8G-4Pin_3.2x2.5mm | Y2 |
| 1 | 12k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10 |
| 1 | 1v8 | TestPoint:TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP4 |
| 1 | 200k | Resistor_SMD:R_0603_1608Metric | R18 |
| 1 | 22uF | Capacitor_SMD:C_0603_1608Metric | C81 |
| 1 | 3.3uF | Capacitor_SMD:C_0603_1608Metric | C26 |
| 1 | 32.5k | Resistor_SMD:R_0603_1608Metric | R36 |
| 1 | 32.768kHz | Crystal:Crystal_SMD_MicroCrystal_CC7V-T1A-2Pin_3.2x1.5mm_HandSoldering | Y1 |
| 1 | 3220-10-0100-00 | jtag:CONN_3220-10-0100-00_CNC | J5 |
| 1 | 3v3 | TestPoint:TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP3 |
| 1 | 65k | Resistor_SMD:R_0603_1608Metric | R34 |
| 1 | 7.5k | Resistor_SMD:R_0603_1608Metric | R38 |
| 1 | 93C56 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U17 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U18 |
| 1 | AP2127K-1.8 | Package_TO_SOT_SMD:SOT-23-5 | U19 |
| 1 | AP2127K-2.8 | Package_TO_SOT_SMD:SOT-23-5 | U12 |
| 1 | AP2127K-ADJ | Package_TO_SOT_SMD:SOT-23-5 | U20 |
| 1 | CORE-V-MCU | core-v:BGA-80-22x22 | U14 |
| 1 | Conn_01x24 | Connector_FFC-FPC:Hirose_FH12-24S-0.5SH_1x24-1MP_P0.50mm_Horizontal | J6 |
| 1 | Conn_02x03_Odd_Even | Connector_PinHeader_1.27mm:PinHeader_2x03_P1.27mm_Vertical_SMD | J2 |
| 1 | Conn_02x05_Odd_Even | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J1 |
| 1 | ECS-2520MVLC-100-CN | Oscillator:Oscillator_SMD_ECS_2520MV-xxx-xx-4Pin_2.5x2.0mm | X1 |
| 1 | ESP32-C3-MINI-1 | espressif:ESP32-C3-MINI-1 | U1 |
| 1 | FT2232HL-REEL | ft2232:QFP50P1200X1200X160-64N | U2 |
| 1 | FXMA2102UMX | FXMA2102UMX:FXMA2102UMX | U4 |
| 1 | GND | TestPoint:TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP6 |
| 1 | LOGO | logos:core-v | G*** |
| 1 | LOGO | logos:mcu_devkit_bold_275_reverse | G*** |
| 1 | LOGO | logos:openhw_group_small | G*** |
| 1 | MCP9808 | Package_DFN_QFN:DFN-8-1EP_3x2mm_P0.5mm_EP1.7x1.4mm | U11 |
| 1 | MIKROBUS_HOST_CONN | mikroBus:MIKROBUS_HOST_CONN | CON1 |
| 1 | PJ-002B | barrel:CUI_PJ-002B | J12 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | USB4105-GF-A | usb:GCT_USB4105-GF-A | J3 |
| 1 | Vdc | TestPoint:TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP2 |
| 1 | W25Q32JWZP | Package_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm | U3 |
| 1 | ~ | logos:devkits_qr | QR-Code1 |
It measures 100 × 75 mm and has 4 copper layers, 1.6 mm thick.
235 parts, built around the ESP32-C3-MINI-1, FT2232HL-REEL, MCP9808-E/MS and W25Q32JWZPIQ. 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.
From the openhwfoundation/core-v-mcu-devkit repository on GitHub, at the commit this page was made from: the board is kicad/OpenHW DevKit.kicad_pcb and its schematic kicad/OpenHW DevKit.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask openhwfoundation before reusing the design.
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