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Z80-arduino

stefanberndtsson·z80-arduino

Z80-arduino PCB layout, top view — open source AVR/Arduino board by stefanberndtsson

About the Z80-arduino PCB

Z80-arduino is an open source AVR/Arduino PCB design by stefanberndtsson, published on GitHub. It is a 2-layer board measuring 94 × 75.6 mm, with 28 components from 19 distinct parts.

Its main chip is the ATMEGA32A-P, from the AVR/Arduino family. Other key parts include the 74LS32, 74LS08, 74LS540, 74LS74 and 74LS245. By type, the board carries 8 ICs, 8 connectors, 8 capacitors, 3 resistors and 1 jumper.

It belongs with the retro computing designs in this gallery.

From the project

Z80 Computer - Arduino Module

Main components on the Z80-arduino

ATMEGA32A-P74LS3274LS0874LS54074LS7474LS245MCP23S17

Z80-arduino bill of materials (BOM)

28 components, 19 distinct parts.

QtyPartRefs
1
ATMEGA32A-P
IC1
1
74LS32
U1
1
74LS08
U2
1
74LS540
U3
1
74LS74
U4
1
74LS245
U5
2
MCP23S17
U6, U7
1
PORT_D
P1
1
PORT_C
P2
1
PORT_B
P3
1
PORT_A
P4
1
ISP
P5
1
PWR
P6
1
BUS
P7
1
CONN_4
P8
1
JUMPER
JP1
8
C
C1, C2, C3, C4, C5, C6, C7, C8
2
10k
R1, R2
1
R
R3

Z80-arduino design files

The KiCad project lives in the stefanberndtsson/z80-arduino repository on GitHub; these links point at the commit this page was built from.

Z80-arduino: common questions

What microcontroller does the Z80-arduino use?

The Z80-arduino is built around the ATMEGA32A-P, from the AVR/Arduino family.

How big is the Z80-arduino PCB?

The Z80-arduino measures 94 × 75.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Z80-arduino?

28 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the Z80-arduino design files?

From the stefanberndtsson/z80-arduino repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Z80-arduino design in my own project?

The repository has no license, so all rights stay with stefanberndtsson. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Z80-arduino without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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