4 layers139.2 × 112.3 mm
4 layers99.3 × 88.6 mm
Z180-comp
89Mods/misc-computers3Misc microcomputer projects
- Size
- 99.3 × 88.6 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 64
- Nets
- 129
- Pads
- 378
- Tracks, vias
- 785, 44
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 28 Sep 2023
- Updated
- 13 Sep 2026
Overview
Z180-comp is an open-source printed circuit board by 89Mods, from the 89Mods/misc-computers repository on GitHub, published under the MIT licence. It is a 4-layer board of 99.3 × 88.6 mm with 64 parts on 129 nets, routed with 785 tracks and 44 vias.
It is built around the MAX232N, 74HC04D and 74HC32D, with the 74HC74D, AMS1117-3.3 and HM628512LFP among its other parts. Its parts include 21 resistors, 15 capacitors, 10 ICs, 8 connectors and 7 diodes.
Main components
6
MAX232N
PDIP-160℃~+70℃ 120Kbps 2 2 4.5V~5.5V Transceiver PDIP-16 RS232 ICs ROHSTexas InstrumentsRS232 ICs
74HC04D
SOP-14-40℃~+125℃ 1 1.5V~4.2V 1.9V、3.7V、5.2V 100mV、400mV、400mV 14ns@6V,50pF 2V~6V 2uA 5.2mA 5.2mA 500mV~1.8V 6 74HC SOIC-14 Inverters ROHSNexperiaInverters74HC32D
SOP-14-40℃~+125℃ 1.5V~4.2V 1.9V、4.4V、5.9V 100mV、400mV、400mV 2 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 6ns@6V,50pF 74HC Series OR Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates74HC74D
SOIC-14-40℃~+125℃ 1 15ns 2 2V~6V 3.5pF 37ns@6V,50pF 3ns、3ns、3ns 40uA 5.2mA 5.2mA 74HC Series 82MHz Asynchronous Complementary D-Type Rising Edge Set and Reset SOIC-14 Flip Flops ROHSNexperiaFlip Flops
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsHM628512LFP
SOP-32-11.7mmSOP-32-11.7mm New Arrivals ROHSHITUncategorised
README
README.mdmisc-computers
Misc microcomputer projects I’ve built. More info @ https://tholin.dev/misc_comps
Contains hardware schematics and PCB design files (if applicable) for each computer, as well as example software.
I hope this repo will help people with building their own computers. You can either re-build one of the systems from here, or reference my code and schematics when designing your own.
Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 4.7K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2, R3, R4, R5, R6, R7, R8, R13, R14, R16, R17, R18, R19, R20, R21, R22 |
| 6 | LED | LED_THT:LED_D3.0mm | D3, D4, D7, D8, D9, D10 |
| 5 | 100nF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C1, C3, C5, C9, C10 |
| 5 | 10µF | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C11, C12, C13, C14, C15 |
| 5 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R9, R10, R11, R12, R15 |
| 3 | 1µF | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C2, C4, C6 |
| 3 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J5, J6, J7 |
| 2 | 22pF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C7, C8 |
| 2 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2 |
| 1 | 1N4148 | Diode_THT:D_DO-34_SOD68_P7.62mm_Horizontal | D2 |
| 1 | 6MHz | Crystal:Crystal_HC18-U_Vertical | Y1 |
| 1 | 74HC04 | Package_DIP:DIP-14_W7.62mm | U2 |
| 1 | 74HC32 | Package_DIP:DIP-14_W7.62mm | U1 |
| 1 | 74HC74 | Package_DIP:DIP-14_W7.62mm | U3 |
| 1 | 82C55A | Package_DIP:DIP-40_W15.24mm | U10 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | Conn_01x01 | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J8 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | DE9_Receptacle | Connector_Dsub:DSUB-9_Female_Horizontal_P2.77x2.84mm_EdgePinOffset4.94mm_Housed_MountingHolesOffset7.48mm | J4 |
| 1 | HM628512 | Package_DIP:DIP-32_W15.24mm | U7 |
| 1 | MAX232 | Package_DIP:DIP-16_W7.62mm | U8 |
| 1 | SST39SF010 | Package_DIP:DIP-32_W15.24mm | U9 |
| 1 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J1 |
| 1 | W25Q32 | Package_DIP:DIP-8_W7.62mm | U6 |
| 1 | Z180 | TholinsStuff:DIP-64_744 | U5 |
Questions
How big is the Z180-comp PCB?
It measures 99.3 × 88.6 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Z180-comp use?
64 parts, built around the MAX232N, 74HC04D, 74HC32D and 74HC74D. 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 Z180-comp KiCad files?
From the 89Mods/misc-computers repository on GitHub, at the commit this page was made from: the board is Z180/HW/Z180-comp.kicad_pcb and its schematic 8X305/HW/8X305.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Z180-comp design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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