HardLabs

Program counter

ostertag·edu8·CAD/program_counter/program_counter.kicad_pcb

Program counter PCB layout, top view — open source AVR/Arduino board by ostertag

About the Program counter PCB

Program counter is an open source AVR/Arduino PCB design by ostertag, published on GitHub under the GPL-2.0 license. It is a 2-layer board measuring 100 × 50 mm, with 41 components from 17 distinct parts.

Its main chip is the ATmega328P-A, from the AVR/Arduino family. Other key parts include the 74HC161, 74HC245 and 74HC165. By type, the board carries 14 capacitors, 9 ICs, 9 resistors, 5 diodes, 2 switches and 1 crystal.

From the project

Educational 8 bit CPU

Main components on the Program counter

74HC16174HC24574HC165ATmega328P-A

Program counter bill of materials (BOM)

41 components, 17 distinct parts.

QtyPartRefs
4
74HC161
U1, U2, U3, U4
2
74HC245
U5, U6
2
74HC165
U7, U8
1
ATmega328P-A
U9
1
16MHz
Y1
1
Conn_01x18_Pin
J1
2
SW_Push
SW1, SW2
1
L_IN
D1
1
L_OUT
D2
1
H_IN
D3
1
H_OUT
D4
1
INC
D5
11
100nF
C1, C2, C3, C4, C5, C6, C7, C8 +3
1
10uF
C9
2
12pF
C10, C11
5
1k
R1, R2, R3, R4, R5
4
10k
R6, R7, R8, R9

Program counter design files

The KiCad project lives in the ostertag/edu8 repository on GitHub; these links point at the commit this page was built from.

Program counter: common questions

What microcontroller does the Program counter use?

The Program counter is built around the ATmega328P-A, from the AVR/Arduino family.

How big is the Program counter PCB?

The Program counter measures 100 × 50 mm, has 2 copper layers and is 1.600198 mm thick.

How many components are on the Program counter?

41 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the Program counter design files?

From the ostertag/edu8 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Program counter design in my own project?

Yes, under the terms of its GPL-2.0 license, which ostertag chose for the repository.

Can I test firmware for the Program counter 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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