GP8B
About the GP8B PCB
GP8B is an open source PCB design by JonathSpirit, published on GitHub under the CERN-OHL-W-2.0 license. It is a 4-layer board measuring 133 × 93 mm, with 105 components from 32 distinct parts.
Other key parts include the XC2C256-VQ100, 74AHC05, 74AHC1G02, 74AHC1G08 and 74AHC273. By type, the board carries 49 capacitors, 40 ICs, 9 resistors, 5 connectors and 2 diodes.
It belongs with the wearables and retro computing designs in this gallery.
From the project
G_Processor8Bits a homemade without any microcontroller 8bits processor
Copyright (C) 2021 Guillaume Guillet\ Licensed under CERN-OHL-W v2 or later
8bits instuction is separated in 2 category :
Main components on the GP8B
GP8B bill of materials (BOM)
105 components, 32 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | XC2C256-VQ100 | VQFP-100_14x14mm_P0.5mm | IC1 |
| 3 | 74AHC05 | SOIC-14_3.9x8.7mm_P1.27mm | U1, U2, U5 |
| 1 | 74AHC1G02 | SOT-23-5 | U3 |
| 1 | 74AHC1G08 | SOT-23-5 | U4 |
| 9 | 74AHC273 | SOIC-20W_7.5x12.8mm_P1.27mm | U6, U24, U26, U27, U29, U31, U33, U35 +1 |
| 1 | 74AHCT273 | SOIC-20W_7.5x12.8mm_P1.27mm | U7 |
| 1 | 74HC163 | SOIC-16_3.9x9.9mm_P1.27mm | U8 |
| 4 | CD74AC238 | SOIC-16_3.9x9.9mm_P1.27mm | U9, U11, U13, U15 |
| 4 | 74AHC1G04 | SOT-23-5 | U10, U12, U36, U39 |
| 2 | 74AHC08 | SOIC-14_3.9x8.7mm_P1.27mm | U14, U16 |
| 1 | 74AHC138 | SOIC-16W_5.3x10.2mm_P1.27mm | U17 |
| 1 | 74HC166 | SOIC-16_3.9x9.9mm_P1.27mm | U18 |
| 5 | 74AHCT244 | SOIC-20W_7.5x12.8mm_P1.27mm | U19, U20, U21, U22, U23 |
| 1 | 74AHCT595 | SOIC-16_3.9x9.9mm_P1.27mm | U25 |
| 1 | TPS7A0518PDBZR | SOT-23 | U28 |
| 1 | SN74LVC8T245DW | SOIC-24W_7.5x15.4mm_P1.27mm | U30 |
| 1 | SN74AVC4T245D | SOIC-16_3.9x9.9mm_P1.27mm | U32 |
| 1 | 74LVC1G34 | SOT-23-5 | U34 |
| 1 | 74AHC374 | SOIC-20W_7.5x12.8mm_P1.27mm | U38 |
| 1 | ALU_JTAG | PinHeader_1x06_P2.54mm_Vertical | J1 |
Show 12 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TE_Eurocard_96pole | Eurocard_5536475-1 | J2 |
| 1 | MM1_5530843-2 | TE_5530843-2 | J3 |
| 1 | UnusedPins_Connector | PinHeader_2x15_P1.27mm_Vertical | J4 |
| 1 | ALU_PINS | PinHeader_2x19_P1.27mm_Vertical | J5 |
| 2 | GREEN_2.65V_2mA | LED_1206_3216Metric | D1, D2 |
| 33 | 10nF | C_0805_2012Metric | C1, C2, C3, C4, C5, C6, C8, C10 +25 |
| 12 | 100nF | C_0805_2012Metric | C7, C9, C20, C24, C26, C28, C30, C31 +4 |
| 4 | 1uF | C_0805_2012Metric | C33, C40, C48, C49 |
| 5 | 10k | R_0805_2012Metric | R1, R2, R3, R6, R7 |
| 1 | 1k5 | R_0805_2012Metric | R4 |
| 1 | 470E | R_0805_2012Metric | R5 |
| 2 | 8x10k | R_Array_SIP9 | RN1, RN2 |
GP8B design files
The KiCad project lives in the JonathSpirit/GP8B repository on GitHub; these links point at the commit this page was built from.
- LayoutProject_GP8B.kicad_pcb
GP8B: common questions
How big is the GP8B PCB?
The GP8B measures 133 × 93 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the GP8B?
105 components, from 32 distinct parts. The full bill of materials is listed on this page.
Where can I download the GP8B design files?
From the JonathSpirit/GP8B repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the GP8B design in my own project?
Yes, under the terms of its CERN-OHL-W-2.0 license, which JonathSpirit chose for the repository.
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