MUL1 SMD
About the MUL1 SMD PCB
MUL1 SMD is an open source PCB design by TheJustMoose, published on GitHub. It is a 2-layer board measuring 83.8 × 27.3 mm, with 13 components from 9 distinct parts.
Other key parts include the 74LS08 and 74LS283. By type, the board carries 6 connectors, 4 ICs, 2 capacitors and 1 resistor.
From the project
Handmade CPU. See README.md
Not a very scary instruction set discrete logic processor.
8 bit data 16 bit address / 64KB RAM 17 bit address (in V register) / 128KW Dual Bank Video RAM 16 instructions 8 data registers and 4 pointer registers in 2 banks 1 flags register in IO port 32 input ports and 32 output ports (You can write a constant to the first 8 ports. Only registers can be written to the remaining ports.) Assembled from 74HCxx series ICs!
Main components on the MUL1 SMD
MUL1 SMD bill of materials (BOM)
13 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 74LS08 | SOIC-14_3.9x8.7mm_P1.27mm | U1, U3 |
| 2 | 74LS283 | SOP-16_3.9x9.9mm_P1.27mm | U2, U4 |
| 2 | Conn_01x08_Male | PinHeader_1x08_P2.54mm_Horizontal | J1, J3 |
| 1 | Conn_01x09_Male | PinHeader_1x09_P2.54mm_Horizontal | J2 |
| 1 | Conn_01x01_Male | PinHeader_1x01_P2.54mm_Horizontal | J4 |
| 1 | Conn_01x02_Male | PinHeader_1x02_P2.54mm_Horizontal | J5 |
| 1 | Conn_01x01_Male | PinHeader_1x01_P2.54mm_Vertical | J6 |
| 2 | 0.1uF | C_Axial_L3.8mm_D2.6mm_P12.50mm_Horizontal | C1, C2 |
| 1 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
MUL1 SMD design files
The KiCad project lives in the TheJustMoose/74HCPU repository on GitHub; these links point at the commit this page was built from.
MUL1 SMD: common questions
How big is the MUL1 SMD PCB?
The MUL1 SMD measures 83.8 × 27.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MUL1 SMD?
13 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the MUL1 SMD design files?
From the TheJustMoose/74HCPU repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the MUL1 SMD design in my own project?
The repository has no license, so all rights stay with TheJustMoose. Use it as a reference, and ask the author before reusing the design.
More boards in 74HCPU
Regs v6
160 × 99.1 mm59 parts2LNo license2
MUX8x1-v5
99.1 × 99.1 mm47 parts4LNo license2
MUX8x1-100x150-r2
160 × 99.1 mm44 parts2LNo license2
ROM
149.9 × 99.1 mm40 parts2LNo license2
Reg
71.1 × 42.6 mm38 parts2LNo license2
MUX
152.4 × 152.4 mm38 parts2LNo license2
MUX4x1
87.6 × 65.4 mm30 parts2LNo license2
RAM
99.1 × 99.1 mm26 parts2LNo license2
MUX16bit
99.1 × 99.1 mm24 parts2LNo license2
AND
81.3 × 31.8 mm10 parts2LNo license2
MUX1
58.4 × 21.3 mm7 parts2LNo license2