4 layers166 × 317 mm
4 layers293 × 406 mm
Computer
SSCsimsi/8Bit_Computer- Size
- 293 × 406 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 994
- Nets
- 1,193
- Pads
- 5,498
- Tracks, vias
- 17,621, 4,755
- Pours
- 20
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 20 Jun 2023
- Updated
- 28 Apr 2026
Overview
Computer is an open-source printed circuit board by SSCsimsi, from the SSCsimsi/8Bit_Computer repository on GitHub. It is a 4-layer board of 293 × 406 mm with 994 parts on 1,193 nets, routed with 17,621 tracks and 4,755 vias.
It is built around the MP2338GTL-Z, M29F800FT55N3E2 and SN74LVC1G14DBVR, with the SN74AHC74DRE4, SN74LVC1G08DBVR and SN74LVC1G32DBVR among its other parts. Its parts include 326 capacitors, 285 ICs, 173 resistors, 150 diodes and 40 connectors.
Main components
12
MP2338GTL-Z
SOT-583-40℃~+125℃ 1 160uA 3A 4.5V~28V 450kHz 500mV~16V Adjustable Buck Buck Built-in Yes SOT-583 DC-DC Converters ROHSMonolithic Power SystemsDC-DC ConvertersM29F800FT55N3E2
TFSOP-48-18.4mm-40℃~+125℃ 100,000 cycles 20 Years 4.5V~5.5V 50ns 55ns 8Mbit TFSOP-48-18.4mm NOR FLASH ROHSAlliance MemoryNOR FLASH
SN74LVC1G14DBVR
SOT-23-5-40℃~+125℃ 1 1 1.65V~5.5V 10uA 24mA 24mA 6ns@4.5V~5.5V,50pF 74LVC SOT-23-5 Inverters ROHSTECH PUBLICLogic Gates
SN74AHC74DRE4
-Flip FlopsTexas InstrumentsSN74LVC1G08DBVR
SOT-23-5-40℃~+85℃ 1 1.65V~5.5V 1.7V、2V 100nA 2 3.4ns@5V,15pF 32mA 32mA 350mV 4V 700mV、800mV 74LVC AND Gate Local shutdown mode SOT-23-5 Logic Gates ROHSTWGMCLogic GatesSN74LVC1G32DBVR
SOT-23-5SOT-23-5 Logic Gates ROHSTECH PUBLICLogic Gates
SN74F283D
SOIC-16SOIC-16 Specialty Logic ROHSTexas InstrumentsSpecialty Logic
CY74FCT163CTSOC
SOIC-16-40℃~+85℃ 1 4.75V~5.25V Divide-by-2 Rising Edge Synchronous Up Counter SOIC-16 Counters, Dividers ROHSTexas InstrumentsCounters, Dividers
SN74AHC86DR-TP
SOP-14SOP-14 Logic Gates ROHSTECH PUBLICLogic GatesSN74LVC1G86DBVR-TP
SOT-23-5-40℃~+125℃ 1 1.2V、1.9V、2.3V、2.4V、3.8V 1.65V~5.5V 10uA 2 300mV、400mV、450mV、550mV 32mA 32mA 4ns@3.3V,50pF 74LVC XOR Gate SOT-23-5 Logic Gates ROHSTECH PUBLICLogic GatesSN74AHC14DRG3
SOIC-14-40℃~+125℃ 10.6ns@5V,50pF 2.2V~3.85V 2V~5.5V 2uA 6 74AHC 8mA 8mA 900mV~1.65V Noise suppression function Push-pull Schmitt trigger SOIC-14 Inverters ROHSTexas InstrumentsInverters
AS7C1024B-12TCN
TSOPI-32-8.0mm0℃~+70℃ 100mA 10mA 12ns 1Mbit 4.5V~5.5V Parallel Port (Parallel) TSOPI-32-8.0mm SRAM ROHSAlliance MemorySRAM
README
README.mdComputer_HTL
Parts
994| Qty | Value | Footprint | References |
|---|---|---|---|
| 293 | 100nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C100, C101, C102, C103, C104, C105, C106, C107, C108, C109, C110, C111, C112, C113, C114, C115 +277 |
| 76 | SN74LVC1G14DBVR | Samacsys:SOT95P280X145-5N | IC10, IC11, IC12, IC13, IC14, IC15, IC101, IC105, IC110, IC115, IC120, IC125, IC136, IC137, IC145, IC146 +60 |
| 74 | 390 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R112, R113, R114, R115, R116, R117, R118, R119, R120, R121, R122, R123, R124, R125, R126, R127 +58 |
| 48 | LTST-C170KFKT | Samacsys:LEDC2012X120N | LED17, LED18, LED19, LED20, LED21, LED22, LED23, LED24, LED25, LED26, LED27, LED28, LED29, LED30, LED31, LED32 +32 |
| 42 | SN74F521DWR | Samacsys:SOIC127P1030X265-20N | IC32, IC33, IC34, IC35, IC155, IC156, IC216, IC217, IC224, IC225, IC226, IC236, IC237, IC242, IC243, IC272 +26 |
| 38 | 150 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R72, R73, R74, R75, R100, R101, R102, R103, R104, R105, R106, R107, R108, R109, R110, R111 +22 |
| 30 | 1N4148WS-7-F | Samacsys:SOD2513X120N | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +14 |
| 29 | SN74AHC74DR | Samacsys:SOIC127P600X175-14N | IC22, IC23, IC103, IC108, IC113, IC118, IC123, IC129, IC130, IC131, IC138, IC150, IC173, IC189, IC199, IC221 +13 |
| 25 | SN74ABT245BDWR | Samacsys:SOIC127P1030X265-20N | IC134, IC184, IC200, IC201, IC202, IC203, IC204, IC206, IC208, IC209, IC210, IC211, IC212, IC213, IC214, IC215 +9 |
| 24 | 4.7k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R20, R23, R26, R31, R35, R39, R42, R45, R50, R176, R177, R178, R179, R180, R181 +8 |
| 24 | LTST-C170KGKT | Samacsys:LEDC2012X110N | LED73, LED74, LED75, LED76, LED77, LED78, LED79, LED80, LED106, LED108, LED110, LED112, LED114, LED116, LED118, LED120 +8 |
| 24 | LTST-C171KSKT | Samacsys:LTSTC171KSKT | LED57, LED58, LED59, LED60, LED61, LED62, LED63, LED64, LED105, LED107, LED109, LED111, LED113, LED115, LED117, LED119 +8 |
| 23 | SN74ABT574ADWR | Samacsys:SOIC127P1030X265-20N | IC19, IC20, IC21, IC100, IC104, IC109, IC114, IC119, IC124, IC133, IC143, IC144, IC154, IC182, IC195, IC196 +7 |
| 19 | M20-7910842R | Samacsys:M207910842R | J1, J2, J3, J4, J5, J6, J10, J11, J12, J13, J14, J15, J16, J17, J38, J39 +3 |
| 17 | M20-8890845 | Samacsys:M208890845 | J18, J19, J20, J21, J22, J23, J24, J25, J26, J27, J28, J29, J30, J31, J32, J33 +1 |
| 16 | LTST-C170KRKT | Samacsys:LEDC2012X120N | LED1, LED2, LED3, LED4, LED6, LED8, LED10, LED12, LED97, LED98, LED99, LED100, LED101, LED102, LED103, LED104 |
| 14 | SN74LVC1G08DBVR | Samacsys:SOT95P280X145-5N | IC25, IC26, IC27, IC67, IC90, IC153, IC160, IC174, IC177, IC178, IC186, IC222, IC251, IC258 |
| 12 | 10k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2, R5, R7, R8, R11, R13, R14, R17, R19, R32, R36, R38 |
| 12 | 22uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C2, C3, C6, C7, C9, C167, C168, C169, C175, C176, C177 |
| 11 | 2MS1T2B3M2QES | Samacsys:2MS1T2B3M2QES | S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13 |
| 10 | SN74AHC540DWR | Samacsys:SOIC127P1030X265-20N | IC262, IC263, IC274, IC275, IC276, IC277, IC278, IC279, IC280, IC281 |
| 9 | SN74LVC1G32DBVR | Samacsys:SOT95P280X145-5N | IC86, IC88, IC102, IC135, IC161, IC163, IC170, IC190, IC271 |
| 8 | 0.1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C4, C5, C11, C12, C170, C171, C178, C179 |
| 8 | 270 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R46, R48, R51, R53, R56, R58, R59, R61 |
| 8 | LTST-C171TBKT | Samacsys:LTSTC171TBKT | LED5, LED7, LED9, LED11, LED13, LED14, LED15, LED16 |
| 6 | SN74AHC08DR | Samacsys:SOIC127P600X175-14N | IC106, IC107, IC128, IC132, IC148, IC179 |
| 6 | SN74AHC157DR | Samacsys:SOIC127P600X175-16N | IC171, IC172, IC175, IC176, IC180, IC181 |
| 6 | SN74F283D | Samacsys:SOIC127P600X175-16N | IC139, IC140, IC141, IC191, IC192, IC193 |
| 6 | SN74HCS4075DR | Samacsys:SOIC127P600X175-14N | IC85, IC87, IC127, IC149, IC162, IC185 |
| 4 | 191k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3, R9, R15, R33 |
| 4 | 22nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C8, C13, C172, C180 |
| 4 | 300pF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C10, C14, C173, C182 |
| 4 | 49.9k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R4, R10, R16, R34 |
| 4 | 6.8uH | Samacsys:INDPM108100X400N | L1, L2, L3, L4 |
| 4 | 90.9k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R6, R12, R18, R37 |
| 4 | CY74FCT163CTSOC | Samacsys:SOIC127P1030X265-16N | IC165, IC166, IC167, IC168 |
| 4 | MP2338GTL-Z | Samacsys:MP2338GTLZ | IC1, IC2, IC31, IC261 |
| 4 | SN74AHC86DR | Samacsys:SOIC127P600X175-14N | IC121, IC122, IC187, IC188 |
| 4 | SN74LVC1G86DBVR | Samacsys:SOT95P280X145-5N | IC98, IC142, IC194, IC240 |
| 3 | B3FS-4055P | Samacsys:B3FS4055P | S1, S2, S14 |
| 3 | SN74AHC32DR | Samacsys:SOIC127P600X175-14N | IC116, IC117, IC126 |
| 2 | 1M | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R63, R66 |
| 2 | 27pF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C243, C245 |
| 2 | Conn_02x25_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x25_P2.54mm_Vertical | J35, J36 |
| 2 | M20-7911042R | Samacsys:M207911042R | J40, J41 |
| 2 | M29F800FT55N3E2 | Samacsys:SOP50P2000X120-48N | IC205, IC207 |
| 2 | SN74AHC14DR | Samacsys:SOIC127P600X175-14N | IC111, IC112 |
| 2 | SN74HCS32DR | Samacsys:SOIC127P600X175-14N | IC265, IC283 |
| 1 | 100 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R65 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C322 |
| 1 | 10nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C249 |
| 1 | 1500 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R67 |
| 1 | 330 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R64 |
| 1 | 4.7uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C250 |
| 1 | 4MHz | Crystal:Crystal_SMD_HC49-SD_HandSoldering | Y1 |
| 1 | AS7C1024B-12TCN | Samacsys:SOP50P2000X120-32N | IC223 |
| 1 | DS1100Z-150+ | Samacsys:SOIC127P600X175-8N | IC3 |
| 1 | DS1100Z-20+ | Samacsys:SOIC127P600X175-8N | IC198 |
| 1 | LM555CMX_NOPB | Samacsys:SOIC127P600X175-8N | IC269 |
| 1 | M61P104KT20T607 | Samacsys:M61P104KT20T607 | VR1 |
| 1 | SN74HC682N | Samacsys:DIP794W53P254L2540H508Q20N | IC147 |
| 1 | SN74LVC1GU04DCKR | Samacsys:SOT65P210X110-5N | IC266 |
| 1 | TMUX1309DYYR | Samacsys:SOP50P326X110-16N | IC267 |
| 1 | ~ | Samacsys:USB_C_PD_Triggerboard | U1 |
Questions
How big is the Computer PCB?
It measures 293 × 406 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Computer use?
994 parts, built around the MP2338GTL-Z, M29F800FT55N3E2, SN74LVC1G14DBVR and SN74AHC74DRE4. 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 Computer KiCad files?
From the SSCsimsi/8Bit_Computer repository on GitHub, at the commit this page was made from: the board is 8Bit Computer ver2.0/Kicad/Computer/Computer.kicad_pcb and its schematic 8Bit Computer ver2.0/Kicad/ClockGen/ClockGen.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Computer design in my own project?
Its repository states no licence, so its author keeps all rights: ask SSCsimsi before reusing the design.
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