4 layers160 × 100 mm
SoMProgrammerNTester
fsnitz/CcSoM
An open source system on chip based on the GateMate FPGA from Cologne Chip (Supports: CCGM1A1 & CCGM1A2)
249 parts8
6 layers67.6 × 50 mm
An open source system on chip based on the GateMate FPGA from Cologne Chip (Supports: CCGM1A1 & CCGM1A2)
- Size
- 67.6 × 50 mm
- Copper layers
- 6
- Thickness
- 1 mm
- Parts
- 135
- Nets
- 221
- Pads
- 829
- Tracks, vias
- 4,113, 500
- Pours
- 33
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 18 Dec 2024
- Updated
- 22 Feb 2026
Overview
SOM is an open-source printed circuit board by fsnitz, from the fsnitz/CcSoM repository on GitHub. It is a 6-layer board of 67.6 × 50 mm with 135 parts on 221 nets, routed with 4,113 tracks and 500 vias.
It is built around the MPM3833CGRH, 74LVC2G53DC and CCGM1A1, with the MX25V8035F and BC847 among its other parts. Its parts include 47 capacitors, 41 resistors, 5 ICs, 3 diodes and 2 transistors. It belongs with the computers and single-board computers boards of this library.
Main components
5MPM3833CGRH
QFN-18QFN-18(2.5x3.5) New Arrivals ROHSMonolithic Power SystemsUncategorised
74LVC2G53DC
VSSOP-8-0.5mm-40℃~+125℃ 1.65V~5.5V 18pF 2 2:1 300MHz 600ps 6Ω VSSOP-8-0.5mm Analog Switches, Multiplexers ROHSNexperiaAnalog Switches, Multiplexers
CCGM1A1
BGA324BGA324 New Arrivals ROHSCologne ChipUncategorisedMX25V8035F
UncategorisedMXIC
BC847
SOT-231 NPN 100MHz 100mA 100nA 110 200mW 45V 500mV 6V NPN SOT-23 Bipolar (BJT) ROHSShikuesBipolar (BJT)
README
README.mdCcSoM
Description
CcSoM is a credit card-sized System on Module built around the GateMate FPGA from Cologne Chip. It is designed to accommodate the CCGM1A1 and CCGM1A2 FPGAs with all their features. This repository contains all the necessary design files to fabricate and further develop the SoM itself or an application specific baseboard for it. A simple IO tester and programmer baseboard can be found in the Baseboards folder. The Library folder contains a symbol and footprint to simplify the process of creating a new baseboard. Each board folder includes a PDF version of the board and schematics, as well as an interactive HTML BOM.
Features:
- Choose the IO-Bank supply voltage for each IO-Bank freely within the capability of the GateMate FPGA (default 2.5V).
- All IOs are routed to the SODIMM-connector and can be accessed either as single-ended signal or as differential pair with its designated partner IO.
- Configuration of the FPGA is possible over JTAG or the on-board QSPI-Flash.
Manufacturing notes
- The SoM is designed for JLCPCBs "JLC0610H-3313" layer stack and with vias in pads. If a different manufacturer is chosen, it is advisable to either reroute all differential lines or to find a manufacturer where the layer stack can be specified.
- Most of the resistors and capacitors have a 0201 footprint, which may complicate the manufacturing process.
Author
Felix Sebastian Nitz
Acknowledgment
A special thanks to Cologne chip and its employees for their feedback on the design and FPGA samples.
License
This project falls under the open hardware licence agreement.
Project status
- SoM revision 1.0 is currently tested with the CCGM1A1 FPGA. Beginning of 2025 an evaluation of its capabilities with an CCGM1A2 will follow.
- A version of the SoM with a 0402 footprint can be found under its designated Tag 0402 Version.
Parts
135| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 10K | Resistor_SMD:R_0402_1005Metric | R2, R6, R7, R8, R11, R18, R19, R20, R21, R22, R23, R24, R27, R31, R36, R41 +1 |
| 16 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C5, C9, C15, C16, C19, C25, C26, C31, C32, C37, C38, C42, C43 |
| 9 | 2u2 | Capacitor_SMD:C_0402_1005Metric | C1, C7, C11, C13, C21, C23, C29, C35, C41 |
| 8 | 10n | Capacitor_SMD:C_0402_1005Metric | C17, C18, C27, C28, C33, C34, C39, C40 |
| 7 | 22u | Capacitor_SMD:C_0603_1608Metric | C6, C10, C20, C44, C45, C46, C47 |
| 7 | SolderJumper_3_Bridged12 | ccsom_Footprint_lib:SolderBridge3Pin | JP1, JP2, JP3, JP4, JP5, JP6, JP7 |
| 4 | 470n | Capacitor_SMD:C_0402_1005Metric | C14, C24, C30, C36 |
| 3 | 200R | Resistor_SMD:R_0402_1005Metric | R1, R12, R13 |
| 3 | 220n | Capacitor_SMD:C_0402_1005Metric | C8, C12, C22 |
| 3 | 4K7 | Resistor_SMD:R_0402_1005Metric | R4, R5, R10 |
| 2 | 1K | Resistor_SMD:R_0402_1005Metric | R26, R37 |
| 2 | 600R 1.5A, 0.1R | Capacitor_SMD:C_0603_1608Metric | L1, L2 |
| 2 | BC847 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | DNS | Resistor_SMD:R_0402_1005Metric | R16, R17 |
| 2 | GREEN | LED_SMD:LED_0603_1608Metric | D2, D3 |
| 2 | MPM3833C | ccsom_Footprint_lib:QFN18 | U4, U5 |
| 1 | +2V5 | TestPoint:TestPoint_Pad_D1.0mm | TP13 |
| 1 | 100K 1% | Resistor_SMD:R_0402_1005Metric | R29 |
| 1 | 100R | ccsom_Footprint_lib:Diff_pair_solderbridge_closed | R14 |
| 1 | 100R | Resistor_SMD:R_0402_1005Metric | R25 |
| 1 | 10MHZ | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | 120K 1% | Resistor_SMD:R_0402_1005Metric | R34 |
| 1 | 12K | Resistor_SMD:R_0402_1005Metric | R39 |
| 1 | 1R 1% | Resistor_SMD:R_0402_1005Metric | R15 |
| 1 | 200K 1% | Resistor_SMD:R_0402_1005Metric | R38 |
| 1 | 20K 1% | Resistor_SMD:R_0402_1005Metric | R28 |
| 1 | 240K 1% | Resistor_SMD:R_0402_1005Metric | R32 |
| 1 | 33R | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 47K 1% | Resistor_SMD:R_0402_1005Metric | R33 |
| 1 | 51K 1% | Resistor_SMD:R_0402_1005Metric | R30 |
| 1 | 62K 1% | Resistor_SMD:R_0402_1005Metric | R35 |
| 1 | 63K4 1% | Resistor_SMD:R_0402_1005Metric | R40 |
| 1 | 74LVC2G53 | ccsom_Footprint_lib:DCU8 | U3 |
| 1 | CCGM1A1 | Package_BGA:BGA-324_15.0x15.0mm_Layout18x18_P0.8mm_Ball0.45mm_Pad0.4mm_NSMD | U1 |
| 1 | D0 | TestPoint:TestPoint_Pad_D1.0mm | TP17 |
| 1 | D1 | TestPoint:TestPoint_Pad_D1.0mm | TP18 |
| 1 | D2 | TestPoint:TestPoint_Pad_D1.0mm | TP19 |
| 1 | D3 | TestPoint:TestPoint_Pad_D1.0mm | TP20 |
| 1 | ECS-5032MV | ccsom_Footprint_lib:5x3.2_Oscillator | X1 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.0mm | TP14 |
| 1 | MD0 | TestPoint:TestPoint_Pad_D1.0mm | TP8 |
| 1 | MD1 | TestPoint:TestPoint_Pad_D1.0mm | TP7 |
| 1 | MD2 | TestPoint:TestPoint_Pad_D1.0mm | TP6 |
| 1 | MD3 | TestPoint:TestPoint_Pad_D1.0mm | TP5 |
| 1 | MX25V8035F | ccsom_Footprint_lib:SOP-8(150_200MIL) | U2 |
| 1 | Orange | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | PG | TestPoint:TestPoint_Pad_D1.0mm | TP22 |
| 1 | SCLK | TestPoint:TestPoint_Pad_D1.0mm | TP16 |
| 1 | SODIMM-200_Split | ccsom_Footprint_lib:SODIMM-200_2.5V_Card_edge | J1 |
| 1 | SolderJumper_2_Bridged | ccsom_Footprint_lib:Solderbridge_closed | JP8 |
| 1 | TCK | TestPoint:TestPoint_Pad_D1.0mm | TP12 |
| 1 | TDI | TestPoint:TestPoint_Pad_D1.0mm | TP10 |
| 1 | TDO | TestPoint:TestPoint_Pad_D1.0mm | TP11 |
| 1 | TMS | TestPoint:TestPoint_Pad_D1.0mm | TP9 |
| 1 | VcAdj | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | Vcore | TestPoint:TestPoint_Pad_D1.0mm | TP21 |
| 1 | ~ | ccsom_Footprint_lib:Diff_pair_solderbridge_closed | JP9 |
| 1 | ~ | ccsom_Footprint_lib:OpenHardwareLogo | log2 |
| 1 | ~ | ccsom_Footprint_lib:PinguinLogo | log1 |
| 1 | ~{CS} | TestPoint:TestPoint_Pad_D1.0mm | TP15 |
| 1 | ~{Rst} | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | ~{VcAen} | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
Questions
How big is the SOM PCB?
It measures 67.6 × 50 mm and has 6 copper layers, 1 mm thick.
What parts does the SOM use?
135 parts, built around the MPM3833CGRH, 74LVC2G53DC, CCGM1A1 and MX25V8035F. 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 SOM KiCad files?
From the fsnitz/CcSoM repository on GitHub, at the commit this page was made from: the board is SoM/SOM.kicad_pcb and its schematic Baseboards/SoMProgrammerNTester/Eastbank.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SOM design in my own project?
Its repository states no licence, so its author keeps all rights: ask fsnitz before reusing the design.
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