MegaDrive
About the MegaDrive PCB
MegaDrive is an open source PCB design by stonedDiscord, published on GitHub. It is a 2-layer board measuring 239.3 × 191 mm, with 256 components from 87 distinct parts.
Other key parts include the HD68HC000P8, uPD42832C-15, 315-5402, Z80CPU and uPD4364. By type, the board carries 97 capacitors, 71 resistors, 19 inductors, 15 ICs, 14 connectors and 7 jumpers.
It belongs with the retro computing designs in this gallery.
From the project
Sega Mega Drive Schematic and Board Files
The design tries to be a 1:1 recreation of the original IC BD M5 PAL board.
You will have to source the 2 SEGA custom chips from either a dead board or a chip dealer.
ArcadeTV for the stripped scans: https://circuit-board.de/forum/index.php/Thread/13913-STRIP-CLUB-PCB-Scans/
Main components on the MegaDrive
MegaDrive bill of materials (BOM)
256 components, 87 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | HD68HC000P8 | DIP-64_W22.86mm | U1 |
| 2 | uPD42832C-15 | DIP-28_DoubleLast | U2, U3 |
| 1 | 315-5402 | QFP-160_28x28_Pitch0.65mm | U4 |
| 1 | Z80CPU | DIP-40_W15.24mm | U6 |
| 1 | uPD4364 | DIP-28_DoubleFirst | U7 |
| 1 | 312-5313A | QFP128 | U8 |
| 2 | M5M4C264L | ZIP-24 | U9, U10 |
| 1 | YM2612 | DIP-24_W15.24mm | U11 |
| 1 | CXA1034P | DIP-16_W7.62mm | U12 |
| 1 | ~ | DIP-24_W10.16mm | U13 |
| 1 | LM358 | DIP-8_W7.62mm | U14 |
| 2 | L7805 | TO-220-3_Vertical | U15, U17 |
| 1 | Video | DIN8Video | J1 |
| 1 | Floppy | Expansion | J2 |
| 1 | Cartridge | SEGA_2x32_Female_Vertical_THT | J3 |
| 1 | EXT | DSUB-9_Socket_Horizontal_P2.77x2.84mm_EdgePinOffset9.40mm | J4 |
| 1 | Player1 | DSUB-9_Pins_Horizontal_P2.77x2.84mm_EdgePinOffset9.40mm | J5 |
| 1 | Player2 | DSUB-9_Pins_Horizontal_P2.77x2.84mm_EdgePinOffset9.40mm | J6 |
| 1 | Jack-DC | BarrelJack_CUI_PJ-002A_Horizontal | J7 |
| 1 | AudioJack3 | Jack_3.5mm | J8 |
Show 67 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | Conn_01x02_Pin | PinSocket_1x02_P2.54mm_Vertical | J9, J99 |
| 2 | Conn_01x04_Pin | PinHeader_1x04_P2.00mm_Vertical | J10, J110 |
| 1 | Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Vertical | J11 |
| 1 | Conn_01x02_Socket | PinHeader_1x02_P2.54mm_Vertical | J111 |
| 1 | 47uF 10V | CP_Radial_Tantal_D4.5mm_P5.00mm | CP112 |
| 24 | 100pF 50v | Resonator-3Pin_W6.0mm_H3.0mm | EM4, EM5, EM7, EM8, EM11, EM12, EM13, EM16 +16 |
| 1 | JAP | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | JP1 |
| 1 | ENG | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | JP2 |
| 1 | PAL | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | JP3 |
| 1 | NTSC | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | JP4 |
| 3 | Conn_01x01_Pin | PinSocket_1x01_P2.54mm_Vertical | JP5, JP6, JP7 |
| 1 | CK5545AC | Oscillator_DIP-14 | OSC1 |
| 1 | ~ | RFmod | RF1 |
| 1 | 50K | HeadphoneVolumeSlider | RV1 |
| 1 | SW_SPDT | SW_E-Switch_EG1224_SPDT_Angled | SW1 |
| 1 | SW_Push | SW_Tactile_Straight_KSA0Axx1LFTR | SW2 |
| 2 | ISR35-100A | D_A-405_P5.08mm_Vertical_AnodeUp | D1, D3 |
| 1 | 1S2475 | D_A-405_P5.08mm_Vertical_AnodeUp | D2 |
| 10 | FerriteBead | L_Axial_L7.0mm_D3.3mm_P5.08mm_Vertical_Fastron_MICC | FB1, FB2, FB3, FB4, FB5, FB8, FB9, FB10 +2 |
| 4 | FerriteBead | LairdTech_28C0236-0JW-10 | FB6, FB11, FB12, FB15 |
| 1 | 4T Radial | LairdTech_28C0236-0JW-10 | FB7 |
| 3 | 100uH | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | L2, L3, L7 |
| 1 | 12uH | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | L5 |
| 1 | 220uF 16V | CP_Radial_Tantal_D4.5mm_P5.00mm | C1 |
| 9 | 0.1uF | C_0805_2012Metric | C2, C3, C45, C46, C47, C48, C73, C83 +1 |
| 6 | 100uF 10V | CP_Radial_Tantal_D4.5mm_P5.00mm | C4, C23, C49, C52, C53, C74 |
| 12 | 10uF 16V | CP_Radial_Tantal_D4.5mm_P5.00mm | C5, C13, C30, C31, C38, C41, C43, C55 +4 |
| 25 | 22pF | C_0805_2012Metric | C6, C9, C10, C14, C15, C16, C17, C18 +17 |
| 9 | 22nF | C_0805_2012Metric | C7, C8, C19, C25, C26, C27, C28, C87 +1 |
| 2 | 10nF | C_0805_2012Metric | C11, C75 |
| 1 | 10uF 10V Tantalum | CP_Radial_Tantal_D4.5mm_P5.00mm | C24 |
| 4 | 220uF 10V | CP_Radial_Tantal_D4.5mm_P5.00mm | C32, C50, C51, C86 |
| 1 | 0.01u | C_0805_2012Metric | C33 |
| 1 | 180pF | C_0805_2012Metric | C34 |
| 2 | 12pF | C_0805_2012Metric | C35, C96 |
| 1 | 100pF | C_0805_2012Metric | C37 |
| 6 | 1uF 50V | CP_Radial_Tantal_D4.5mm_P5.00mm | C40, C42, C44, C58, C61, C62 |
| 6 | 47uF 10V | CP_Radial_Tantal_D4.5mm_P5.00mm | C59, C60, C63, C66, C68, C111 |
| 1 | 47uF 16V | CP_Radial_Tantal_D4.5mm_P5.00mm | C65 |
| 2 | 330pF | C_0805_2012Metric | C69, C91 |
| 2 | 1000pF | C_0805_2012Metric | C77, C85 |
| 1 | 100uF 16V | CP_Radial_Tantal_D4.5mm_P5.00mm | C79 |
| 1 | 220pF | C_0805_2012Metric | C81 |
| 1 | 20pF | C_0805_2012Metric | C82 |
| 1 | 47pF | C_0805_2012Metric | C88 |
| 1 | 39pF | C_0805_2012Metric | C113 |
| 1 | 100nF | C_0805_2012Metric | C121 |
| 4 | 47k | R_0805_2012Metric | R1, R36, R39, R52 |
| 1 | 120 | R_0805_2012Metric | R3 |
| 4 | 330 | R_0805_2012Metric | R4, R5, R6, R7 |
| 14 | 2.2k | R_0805_2012Metric | R8, R9, R10, R11, R12, R14, R15, R16 +6 |
| 12 | 4.7k | R_0805_2012Metric | R17, R19, R21, R59, R77, R78, R79, R80 +4 |
| 6 | 1.2k | R_0805_2012Metric | R18, R20, R22, R27, R28, R67 |
| 2 | 3.3k | R_0805_2012Metric | R23, R51 |
| 5 | 1k | R_0805_2012Metric | R24, R26, R29, R69, R73 |
| 5 | 75 | R_0805_2012Metric | R25, R32, R33, R49, R50 |
| 1 | 24k | R_0805_2012Metric | R30 |
| 2 | 51k | R_0805_2012Metric | R34, R37 |
| 5 | 10k | R_0805_2012Metric | R40, R41, R42, R43, R64 |
| 3 | 5.6k | R_0805_2012Metric | R55, R56, R57 |
| 1 | 36k | R_0805_2012Metric | R58 |
| 1 | 100k | R_0805_2012Metric | R65 |
| 1 | 30k | R_0805_2012Metric | R66 |
| 1 | 2k | R_0805_2012Metric | R70 |
| 1 | 1.3k | R_0805_2012Metric | R72 |
| 1 | 33k | R_0805_2012Metric | R74 |
| 1 | 10 | R_0805_2012Metric | R85 |
MegaDrive design files
The KiCad project lives in the stonedDiscord/MegaDrive repository on GitHub; these links point at the commit this page was built from.
- LayoutMegaDrive.kicad_pcb
- SchematicMegaDrive.kicad_sch
MegaDrive: common questions
How big is the MegaDrive PCB?
The MegaDrive measures 239.3 × 191 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MegaDrive?
256 components, from 87 distinct parts. The full bill of materials is listed on this page.
Where can I download the MegaDrive design files?
From the stonedDiscord/MegaDrive repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the MegaDrive design in my own project?
The repository has no license, so all rights stay with stonedDiscord. Use it as a reference, and ask the author before reusing the design.
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