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Instruction registers

ostertag·edu8·CAD/instruction_registers/instruction_registers.kicad_pcb

Instruction registers PCB layout, top view — open source AVR/Arduino board by ostertag

About the Instruction registers PCB

Instruction registers 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 × 60 mm, with 43 components from 20 distinct parts.

Its main chip is the ATmega328P-A, from the AVR/Arduino family. Other key parts include the 74HC377, 74HC245 and 74HC165. By type, the board carries 14 capacitors, 9 ICs, 9 resistors, 5 diodes, 3 switches and 1 crystal.

From the project

Educational 8 bit CPU

Main components on the Instruction registers

74HC37774HC24574HC165ATmega328P-A

Instruction registers bill of materials (BOM)

43 components, 20 distinct parts.

QtyPartRefs
3
74HC377
U1, U2, U3
2
74HC245
U4, U5
3
74HC165
U6, U7, U8
1
ATmega328P-A
U9
1
16MHz
Y1
1
Conn_01x32_Pin
J1
1
10k
RV1
2
SW_Push
SW1, SW2
1
SW_SPDT
SW3
1
IR1_IN
D1
1
IR2_IN
D2
1
IR3_IN
D3
1
IR2_OUT
D4
1
IR3_OUT
D5
11
100nF
C1, C2, C3, C4, C5, C6, C7, C8 +3
1
10uF
C9
2
12pF
C10, C11
3
10k
R1, R2, R3
1
220R
R4
5
1k
R5, R6, R7, R8, R9

Instruction registers design files

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

Instruction registers: common questions

What microcontroller does the Instruction registers use?

The Instruction registers is built around the ATmega328P-A, from the AVR/Arduino family.

How big is the Instruction registers PCB?

The Instruction registers measures 100 × 60 mm, has 2 copper layers and is 1.600198 mm thick.

How many components are on the Instruction registers?

43 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Instruction registers 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 Instruction registers 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 Instruction registers 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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