IO-Midi-SN76489
About the IO-Midi-SN76489 PCB
IO-Midi-SN76489 is an open source PCB design by Trilobyte-CPU, published on GitHub. It is a 2-layer board measuring 93.5 × 33.8 mm, with 17 components from 14 distinct parts.
Other key parts include the SN76489 and LM386. By type, the board carries 6 capacitors, 4 connectors, 2 ICs, 2 resistors and 1 crystal.
It belongs with the audio designs in this gallery.
From the project
A DIY 8-bit computer built mostly with discrete logic chips
Main components on the IO-Midi-SN76489
IO-Midi-SN76489 bill of materials (BOM)
17 components, 14 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SN76489 | DIP-16_W7.62mm | U2 |
| 1 | LM386 | DIP-8_W7.62mm | U3 |
| 1 | 4MHz | Crystal_DIP_4_14 | Y1 |
| 1 | Conn_01x26 | PinHeader_1x26_P2.54mm_Horizontal | J1 |
| 1 | Conn_01x03 | PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_Phoenix_MPT-0,5-2-2.54_1x02_P2.54mm_Horizontal | J3 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J4 |
| 2 | 10k | Potentiometer_ACP_CA9-H3,8_Horizontal | RV1, RV2 |
| 2 | C | C_0805_2012Metric | C1, C3 |
| 2 | 10µf | CP_Elec_5x5.4 | C4, C5 |
| 1 | 47µf | C_0805_2012Metric | C6 |
| 1 | 220µf | CP_Elec_6.3x7.7 | C7 |
| 1 | 10k | R_0805_2012Metric | R1 |
| 1 | 10Ω | R_0805_2012Metric | R2 |
IO-Midi-SN76489 design files
The KiCad project lives in the Trilobyte-CPU/8-bit-computer repository on GitHub; these links point at the commit this page was built from.
IO-Midi-SN76489: common questions
How big is the IO-Midi-SN76489 PCB?
The IO-Midi-SN76489 measures 93.5 × 33.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the IO-Midi-SN76489?
17 components, from 14 distinct parts. The full bill of materials is listed on this page.
Where can I download the IO-Midi-SN76489 design files?
From the Trilobyte-CPU/8-bit-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 IO-Midi-SN76489 design in my own project?
The repository has no license, so all rights stay with Trilobyte-CPU. Use it as a reference, and ask the author before reusing the design.
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