VCU CM4
About the VCU CM4 PCB
VCU CM4 is an open source STM32 PCB design by NTURacingTeam, published on GitHub. It is a 4-layer board measuring 100 × 90 mm, with 445 components from 122 distinct parts.
Its main chip is the STM32F103CBT6, from the STM32 family. Other key parts include the LM66100DCK, TLV75733, TPS5430DDA, TCAN1042VDRQ1 and MCP2518FD. By type, the board carries 173 resistors, 136 capacitors, 38 diodes, 26 fuses, 18 ICs and 17 test points.
Main components on the VCU CM4
VCU CM4 bill of materials (BOM)
445 components, 122 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM66100DCK | SOT-363_SC-70-6 | U1 |
| 4 | TLV75733 | SOT-23-5 | U2, U6, U7, U8 |
| 2 | TPS5430DDA | TI_SO-PowerPAD-8 | U3, U13 |
| 4 | TCAN1042VDRQ1 | SOIC-8_3.9x4.9mm_P1.27mm | U4, U14, U17, U19 |
| 1 | STM32F103CBT6 | LQFP-48_7x7mm_P0.5mm | U5 |
| 2 | MCP2518FD | SOIC-14_3.9x8.7mm_P1.27mm | U9, U10 |
| 1 | REF3133AIDBZR | SOT-23 | U11 |
| 1 | STM32H743ZITx | LQFP-144_20x20mm_P0.5mm | U12 |
| 1 | USB2514B_Bi | QFN-36-1EP_6x6mm_P0.5mm_EP3.7x3.7mm | U15 |
| 1 | MCP7940N-xSN | SOIC-8_3.9x4.9mm_P1.27mm | U20 |
| 1 | AO3400A | SOT-23 | Q1 |
| 1 | MMBT3904 | SOT-23 | Q2 |
| 1 | 2N7002 | SOT-23 | Q3 |
| 1 | AO3401A | SOT-23 | Q4 |
| 1 | 8MHz X50328MSB2GI | Crystal_SMD_5032-2Pin_5.0x3.2mm | Y1 |
| 2 | 40Mhz XTM32040000DT00351001 | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2, Y3 |
| 1 | 8Mhz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y4 |
| 2 | 32.768kHz Q13FC13500004 | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y5, Y7 |
| 1 | 24Mhz X322524MOB4SI | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y6 |
| 1 | RPI_UPS | PinHeader_1x02_P2.00mm_Horizontal | J1 |
Show 102 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | VCU_UPS | PinHeader_1x02_P2.00mm_Horizontal | J2 |
| 1 | MIPI_DSI_22P | Hirose_FH12-22S-0.5SH_1x22-1MP_P0.50mm_Horizontal | J4 |
| 1 | MIPI_CAM_22P | Hirose_FH12-22S-0.5SH_1x22-1MP_P0.50mm_Horizontal | J5 |
| 2 | MSD-4-A | MSD4A | J7, J10 |
| 1 | current_loops | Amphenol_F32Q-1A7x1-11040_1x40-1MP_P0.5mm_Horizontal | J8 |
| 1 | to_Dash_Screen | PinHeader_2x15_P2.00mm_Vertical_SMD | J9 |
| 1 | USB_C_stm32 | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J24 |
| 1 | 1056 | BAT_1056 | BT1 |
| 1 | 0.5A | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F1 |
| 1 | 1A | Fuse_1206_3216Metric | F2 |
| 2 | 3A | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F3, F25 |
| 1 | RPI_FUSE_5A | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F4 |
| 20 | 30mA | Fuse_0805_2012Metric_Pad1.15x1.40mm_HandSolder | F5, F6, F7, F8, F9, F10, F11, F12 +12 |
| 1 | 0.5A | Fuse_1206_3216Metric | F26 |
| 1 | ACM70V-701-2PL-TL00 | Common_Mode_Choke_4A_ACM70V7012PLTL00 | FL1 |
| 4 | EXC-X4CE900U EXC14CE121U | EXCX4CE900U | FL2, FL3, FL4, FL5 |
| 1 | ComputeModule4 | Raspberry-Pi-4-Compute-Module | Module1 |
| 1 | RPI_CPU_RST | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW1 |
| 3 | RESET | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW2, SW4, SW5 |
| 1 | BOOT0 | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW3 |
| 1 | RPI_PWR | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW6 |
| 1 | RPI_CAN0_H | edge_pad_1.4mm_0.7mm | TP1 |
| 1 | RPI_CAN0_L | edge_pad_1.4mm_0.7mm | TP2 |
| 1 | RPI_CAN1_H | edge_pad_1.4mm_0.7mm | TP3 |
| 1 | RPI_CAN1_L | edge_pad_1.4mm_0.7mm | TP4 |
| 1 | STM32_CAN1_H | edge_pad_1.4mm_0.7mm | TP5 |
| 1 | STM32_CAN1_L | edge_pad_1.4mm_0.7mm | TP6 |
| 1 | STM32_CAN2_H | edge_pad_1.4mm_0.7mm | TP7 |
| 1 | STM32_CAN2_L | edge_pad_1.4mm_0.7mm | TP8 |
| 1 | GND_in | edge_pad_1.4mm_0.7mm | TP9 |
| 2 | GND | edge_pad_1.4mm_0.7mm | TP10, TP18 |
| 1 | 24V_in | edge_pad_1.4mm_0.7mm | TP11 |
| 1 | +5V | edge_pad_1.4mm_0.7mm | TP12 |
| 1 | BUZZER_P | edge_pad_1.4mm_0.7mm | TP13 |
| 1 | BUZZER_N | edge_pad_1.4mm_0.7mm | TP14 |
| 1 | RPI_CPU_RST | edge_pad_1.4mm_0.7mm | TP19 |
| 1 | RPI_PWR | edge_pad_1.4mm_0.7mm | TP21 |
| 1 | zener 27V (BZT52C27) | D_SOD-123 | D1 |
| 1 | WHITE | LED_0603_1608Metric | D2 |
| 1 | zener 3.6V | D_SOD-123 | D3 |
| 3 | SS54 | D_SMA | D4, D33, D39 |
| 3 | SMBJ5.0A | D_SMB | D5, D17, D34 |
| 4 | NUP2105L | SOT-23 | D6, D35, D36, D38 |
| 20 | zener 3.6V | D_SOD-323 | D7, D8, D9, D10, D11, D12, D18, D19 +12 |
| 1 | GREEN led | LED_0603_1608Metric | D13 |
| 1 | RED led | LED_0603_1608Metric | D14 |
| 1 | GREEN_LED | LED_0603_1608Metric | D15 |
| 1 | RED_LED | LED_0603_1608Metric | D16 |
| 1 | WHITE LED | LED_0603_1608Metric | D32 |
| 1 | SDFL2012Q1R0KTF 0805 | L_0805_2012Metric | FB1 |
| 1 | 7A 220nH NBMC0420HN-R22M | L_Ferrocore_DLG-0403 | L1 |
| 2 | 22uH 3.7A (SMDRI129-220MT) | L_Bourns_SRR1260 | L2, L3 |
| 2 | 220u 35V | CP_Elec_6.3x5.2 | C1, C5 |
| 3 | 10u 35V | C_1206_3216Metric | C2, C3, C4 |
| 31 | 1u | C_0402_1005Metric | C6, C7, C8, C20, C22, C24, C26, C28 +23 |
| 2 | 10u 50V | C_1206_3216Metric | C9, C111 |
| 2 | 0u1 | C_0603_1608Metric | C10, C112 |
| 2 | 10n | C_0603_1608Metric | C11, C113 |
| 12 | 47u 10V | C_1206_3216Metric | C12, C13, C14, C15, C16, C17, C114, C115 +4 |
| 9 | 0u1 | C_0402_1005Metric | C18, C19, C102, C120, C121, C136, C137, C143 +1 |
| 20 | 10u | C_0402_1005Metric | C21, C23, C25, C27, C29, C31, C57, C59 +12 |
| 6 | 30p | C_0402_1005Metric | C32, C33, C50, C51, C52, C53 |
| 4 | 10u 6V | C_0402_1005Metric | C34, C35, C103, C104 |
| 26 | 100n | C_0402_1005Metric | C36, C37, C38, C39, C54, C55, C86, C88 +18 |
| 1 | 100n | C_0603_1608Metric | C41 |
| 1 | 10u | C_0603_1608Metric | C49 |
| 2 | 470n | C_0603_1608Metric | C82, C83 |
| 2 | 22u | C_0805_2012Metric | C84, C85 |
| 2 | 2u2 | C_0402_1005Metric | C87, C90 |
| 3 | 4u7 | C_0402_1005Metric | C101, C130, C131 |
| 2 | 33p | C_0402_1005Metric | C105, C106 |
| 2 | 15p | C_0402_1005Metric | C107, C108 |
| 2 | Xp | C_0402_1005Metric | C122, C123 |
| 14 | 0R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R4, R133, R154, R157, R159 +6 |
| 3 | 15k | R_0402_1005Metric | R5, R14, R146 |
| 3 | 1k | R_0402_1005Metric | R6, R167, R168 |
| 16 | 10k | R_0402_1005Metric | R7, R8, R17, R30, R31, R34, R43, R127 +8 |
| 1 | 49k9 | R_0402_1005Metric | R9 |
| 1 | 5k6 | R_0402_1005Metric | R10 |
| 7 | 100k | R_0402_1005Metric | R11, R12, R32, R54, R55, R56, R143 |
| 2 | 47k | R_0402_1005Metric | R13, R145 |
| 8 | 22R | R_0402_1005Metric | R15, R16, R147, R148, R155, R156, R160, R161 |
| 20 | 150R 1% | R_0603_1608Metric | R18, R20, R22, R24, R26, R28, R101, R103 +12 |
| 20 | 100R | R_0603_1608Metric | R19, R21, R23, R25, R27, R29, R102, R104 +12 |
| 2 | 100R | R_0402_1005Metric | R33, R37 |
| 3 | 220R | R_0402_1005Metric | R35, R36, R134 |
| 5 | 100R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R38, R39, R40, R41, R42 |
| 1 | 33k | R_0402_1005Metric | R44 |
| 1 | 1k5 | R_0402_1005Metric | R45 |
| 2 | 100R | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R46, R47 |
| 2 | 680R | R_0402_1005Metric | R48, R49 |
| 8 | 2k2 | R_0402_1005Metric | R50, R51, R52, R53, R170, R171, R172, R173 |
| 1 | 0R | R_0402_1005Metric | R57 |
| 20 | 75R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R61, R62, R63, R64, R65, R66, R67, R68 +12 |
| 20 | 75R | R_0603_1608Metric | R81, R82, R83, R84, R85, R86, R87, R88 +12 |
| 1 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R128 |
| 2 | 0R | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R131, R132 |
| 5 | 4k7 | R_0402_1005Metric | R135, R136, R137, R138, R139 |
| 1 | 100 | R_0402_1005Metric | R142 |
| 2 | 56k | R_0402_1005Metric | R150, R152 |
| 1 | 12k | R_0402_1005Metric | R151 |
| 1 | 0R | R_0603_1608Metric | R153 |
VCU CM4 design files
The KiCad project lives in the NTURacingTeam/nturt_kicad_EP7 repository on GitHub; these links point at the commit this page was built from.
VCU CM4: common questions
What microcontroller does the VCU CM4 use?
The VCU CM4 is built around the STM32F103CBT6, from the STM32 family.
How big is the VCU CM4 PCB?
The VCU CM4 measures 100 × 90 mm, has 4 copper layers and is 1.6062 mm thick.
How many components are on the VCU CM4?
445 components, from 122 distinct parts. The full bill of materials is listed on this page.
Where can I download the VCU CM4 design files?
From the NTURacingTeam/nturt_kicad_EP7 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the VCU CM4 design in my own project?
The repository has no license, so all rights stay with NTURacingTeam. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the VCU CM4 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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