4 layers293 × 406 mm
4 layers116 × 135 mm
Memory Module
SSCsimsi/8Bit_Computer- Size
- 116 × 135 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 89
- Nets
- 229
- Pads
- 774
- Tracks, vias
- 2,734, 665
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 20 Jun 2023
- Updated
- 28 Apr 2026
Overview
Memory Module is an open-source printed circuit board by SSCsimsi, from the SSCsimsi/8Bit_Computer repository on GitHub. It is a 4-layer board of 116 × 135 mm with 89 parts on 229 nets, routed with 2,734 tracks and 665 vias.
It is built around the M29F800FT55N3E2, MP2338GTL-Z and SN74LVC1G14DBVR, with the SN74AHC74DRE4, AS7C1024B-12TCN and DS1100Z-20+T among its other parts. Its parts include 33 capacitors, 27 ICs, 17 resistors, 9 connectors and 2 diodes.
Main components
8M29F800FT55N3E2
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
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 Converters
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 Instruments
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
DS1100Z-20+T
SOIC-8-40℃~+85℃ 20ns 4.75V~5.25V SOIC-8 Time Delays ROHSMaxim Integrated (Analog Devices)Time DelaysM20-8890845
SMD,P=2.54mm,卧贴-40℃~+105℃ 1 2.54mm 3A 8P Black Brass Surface Mount, Right Angle SMD,P=2.54mm,卧贴 Pin Headers ROHSHarwinPin Headers
1N4148WS-7-F-CN
SOD-323Switching DiodesChipNobo
README
README.mdComputer_HTL
Parts
89| Qty | Value | Footprint | References |
|---|---|---|---|
| 26 | 100nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C217, C218, C219, C220, C221, C222, C223, C224, C225, C226, C227, C228, C229, C230, C231, C232 +10 |
| 14 | SN74ABT245BDWR | Samacsys:SOIC127P1030X265-20N | IC200, IC201, IC202, IC203, IC204, IC206, IC208, IC209, IC210, IC211, IC212, IC213, IC214, IC215 |
| 11 | 4.7k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R62 |
| 7 | M20-8890845 | Samacsys:M208890845 | J25, J26, J27, J28, J29, J30, J31 |
| 4 | SN74LVC1G14DBVR | Samacsys:SOT95P280X145-5N | IC218, IC219, IC220, IC222 |
| 3 | 10k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R8, R11, R13 |
| 3 | 22uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C6, C7, C9 |
| 2 | 0.1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C11, C12 |
| 2 | 1N4148WS-7-F | Samacsys:SOD2513X120N | D3, D30 |
| 2 | Conn_02x25_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x25_P2.54mm_Vertical | J35, J36 |
| 2 | M29F800FT55N3E2 | Samacsys:SOP50P2000X120-48N | IC205, IC207 |
| 2 | SN74AHC74DR | Samacsys:SOIC127P600X175-14N | IC199, IC221 |
| 2 | SN74F521DWR | Samacsys:SOIC127P1030X265-20N | IC216, IC217 |
| 1 | 191k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R9 |
| 1 | 22nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C13 |
| 1 | 300pF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C14 |
| 1 | 49.9k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R10 |
| 1 | 6.8uH | Samacsys:INDPM108100X400N | L2 |
| 1 | 90.9k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R12 |
| 1 | AS7C1024B-12TCN | Samacsys:SOP50P2000X120-32N | IC223 |
| 1 | DS1100Z-20+ | Samacsys:SOIC127P600X175-8N | IC198 |
| 1 | MP2338GTL-Z | Samacsys:MP2338GTLZ | IC2 |
Questions
How big is the Memory Module PCB?
It measures 116 × 135 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Memory Module use?
89 parts, built around the M29F800FT55N3E2, MP2338GTL-Z, 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 Memory Module 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/Memory_Module.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 Memory Module 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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