2 layers233.4 × 160 mm
2 layers265.4 × 95.3 mm
- Size
- 265.4 × 95.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 102
- Pads
- 278
- Tracks, vias
- 552, 16
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 3 Feb 2017
- Updated
- 13 Sep 2023
Overview
CPU is an open-source printed circuit board by jonathan-tooley, from the jonathan-tooley/903 repository on GitHub. It is a 2-layer board of 265.4 × 95.3 mm with 36 parts on 102 nets, routed with 552 tracks and 16 vias.
It is built around the MAX232N, TCA9548APW and MCP23017-E/SS. Its parts include 9 capacitors, 9 resistors, 9 connectors and 5 ICs.
Main components
3
MAX232N
PDIP-160℃~+70℃ 120Kbps 2 2 4.5V~5.5V Transceiver PDIP-16 RS232 ICs ROHSTexas InstrumentsRS232 ICs
TCA9548APW
TSSOP-24-40℃~+85℃ 1.65V~5.5V 2uA 400Kbps 80uA I2C、SMBus Power-up/reset configuration TSSOP-24 Interface - Specialized ROHSTexas InstrumentsSignal Switches, Multiplexers, Decoders
MCP23017-E/SS
SSOP-28(5.3x10.2x0.65)-40℃~+125℃ 1.7MHz 1.8V~5.5V 16 1uA 600mV 8 8mA I2C Interrupt Output Reset function、Cascading and address extension SSOP-28 I/O Expanders ROHSMicrochip TechnologyI/O Expanders
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100n | lib_fp:C_Rect_L7.0mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5, C6, C7, C9 |
| 8 | 4k7 | lib_fp:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4, R5, R6, R8, R9 |
| 2 | MCP23017 | lib_fp:DIP-28_W7.62mm | U1.3, U1.5 |
| 1 | 10u | lib_fp:CP_Radial_D5.0mm_P2.50mm | C8 |
| 1 | 20R | lib_fp:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7 |
| 1 | CONN_01X02 | lib_fp:Harwin_LTek-Male_02_P2.00mm_Vertical_StrainRelief | P1.5 |
| 1 | Control Panel | lib_fp:Harwin_LTek-Male_05_P2.00mm_Vertical_StrainRelief | P1.1 |
| 1 | Display Unit | lib_fp:Harwin_LTek-Male_05_P2.00mm_Vertical_StrainRelief | P1.2 |
| 1 | IO Control | lib_fp:Harwin_LTek-Male_05_P2.00mm_Vertical_StrainRelief | P1.8 |
| 1 | MAX232 | lib_fp:DIP-16_W7.62mm | U1.4 |
| 1 | MISC GPIO | lib_fp:Harwin_LTek-Male_06_P2.00mm_Vertical_StrainRelief | P1.7 |
| 1 | Plotter | lib_fp:Harwin_LTek-Male_2x06_P2.00mm_Vertical_StrainRelief | P1.6 |
| 1 | RS232 | lib_fp:Harwin_LTek-Male_03_P2.00mm_Vertical_StrainRelief | P1.9 |
| 1 | Raspberry_Pi_2_3 | lib_fp:RASPI_BPLUS_MIRRORED | U1.1 |
| 1 | TCA9548A | lib_fp:ADAMult | U1.2 |
| 1 | Tape Punch | lib_fp:Harwin_LTek-Male_2x06_P2.00mm_Vertical_StrainRelief | P1.3 |
| 1 | Tape Reader | lib_fp:Harwin_LTek-Male_2x06_P2.00mm_Vertical_StrainRelief | P1.4 |
The 32 most common of 36 parts.
Questions
How big is the CPU PCB?
It measures 265.4 × 95.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CPU use?
36 parts, built around the MAX232N, TCA9548APW and MCP23017-E/SS. 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 CPU KiCad files?
From the jonathan-tooley/903 repository on GitHub, at the commit this page was made from: the board is KiCad/CPU/CPU.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the CPU design in my own project?
Its repository states no licence, so its author keeps all rights: ask jonathan-tooley before reusing the design.
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