ZTO-80 CPU
About the ZTO-80 CPU PCB
ZTO-80 CPU is an open source PCB design by jacobtohahn, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 99.1 × 57.2 mm, with 24 components from 14 distinct parts.
Other key parts include the Z80CPU, 74HCT04, 74HCT541 and 74HCT245. By type, the board carries 6 capacitors, 6 resistors, 5 ICs, 3 connectors, 1 crystal and 1 jumper.
It belongs with the retro computing designs in this gallery.
From the project
A Z80 computer system
While Z80s overclock well, it is recommended that the max clock speed matches the CPU's rated speed.
Use two pin headers as jumpers on this board.
Main components on the ZTO-80 CPU
ZTO-80 CPU bill of materials (BOM)
24 components, 14 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Z80CPU | DIP-40_W15.24mm | U1 |
| 1 | 74HCT04 | DIP-14_W7.62mm | U2 |
| 2 | 74HCT541 | DIP-20_W7.62mm | U3, U4 |
| 1 | 74HCT245 | DIP-20_W7.62mm | U5 |
| 1 | CXO_DIP8 | Oscillator_DIP-8 | X1 |
| 1 | ZTO-80 Bus | PinHeader_2x20_P2.54mm_Horizontal | J1 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Horizontal | J2 |
| 1 | Conn_01x09 | PinHeader_1x09_P2.54mm_Horizontal | J3 |
| 1 | Jumper_2_Bridged | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | SW_Push | SW_PUSH_6mm | SW1 |
| 1 | LED 3MM RED | LED_D3.0mm | D1 |
| 6 | 100nF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C2, C3, C4, C5, C6 |
| 1 | 220 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1 |
| 5 | 10k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2, R3, R4, R5, R6 |
ZTO-80 CPU design files
The KiCad project lives in the jacobtohahn/ZTO-80 repository on GitHub; these links point at the commit this page was built from.
ZTO-80 CPU: common questions
How big is the ZTO-80 CPU PCB?
The ZTO-80 CPU measures 99.1 × 57.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ZTO-80 CPU?
24 components, from 14 distinct parts. The full bill of materials is listed on this page.
Where can I download the ZTO-80 CPU design files?
From the jacobtohahn/ZTO-80 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the ZTO-80 CPU design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which jacobtohahn chose for the repository.
More boards in ZTO-80
SBC3.1
127 × 96.5 mm67 parts2LCERN-OHL-S-2.020
SBC3.2
127 × 96.5 mm67 parts2LCERN-OHL-S-2.020
ZTO-80 SIO
99.1 × 57.2 mm32 parts2LCERN-OHL-S-2.020
ZTO-80 SBC Backplane 5
99.1 × 91.4 mm28 parts2LCERN-OHL-S-2.020
ZTO-80 Backplane 5
99.1 × 91.4 mm25 parts2LCERN-OHL-S-2.020
ZTO-80 CTC
99.1 × 57.2 mm17 parts2LCERN-OHL-S-2.020
ZTO-80 Memory
99.1 × 57.2 mm10 parts2LCERN-OHL-S-2.020
ZTO-80 Template
99.1 × 57.2 mm4 parts2LCERN-OHL-S-2.020
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