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82C55 GPIO Unit

oberrow·i8088-computer·kicad/82C55_GPIO_Unit/82C55_GPIO_Unit.kicad_pcb

82C55 GPIO Unit PCB layout, top view — open source board by oberrow
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About the 82C55 GPIO Unit PCB

82C55 GPIO Unit is an open source PCB design by oberrow, published on GitHub under the MIT license. It is a 4-layer board measuring 52 × 72 mm, with 11 components from 7 distinct parts.

Other key parts include the 82C55A, 74LS540 and AMS1117-3.3. By type, the board carries 3 ICs, 2 transistors, 2 connectors, 2 capacitors and 2 resistors.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

Code for an i8088-based non-PC compatible breadboard computer

Main components on the 82C55 GPIO Unit

82C55A74LS540AMS1117-3.3

82C55 GPIO Unit bill of materials (BOM)

11 components, 7 distinct parts.

QtyPartRefs
1
82C55A
U1
1
74LS540
U2
1
AMS1117-3.3
U3
2
2N7000
Q1, Q2
2
Conn_01x28
J1, J2
2
C
C1, C2
2
R 10k
R2, R6

82C55 GPIO Unit design files

The KiCad project lives in the oberrow/i8088-computer repository on GitHub; these links point at the commit this page was built from.

82C55 GPIO Unit: common questions

How big is the 82C55 GPIO Unit PCB?

The 82C55 GPIO Unit measures 52 × 72 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the 82C55 GPIO Unit?

11 components, from 7 distinct parts. The full bill of materials is listed on this page.

Where can I download the 82C55 GPIO Unit design files?

From the oberrow/i8088-computer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the 82C55 GPIO Unit design in my own project?

Yes, under the terms of its MIT license, which oberrow chose for the repository.

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