Make sure you read the LICENSE
MBC3 Flashcart based on retroreboot's cartridge that uses 0603 components (while based on the RetroReboot carts, these are completely redesigned from the ground up in kicad)
If you want a 4MB cart check out my new MBC30 flashcart repo
Version 1.5 and beyond makes use of djedditt's cartridge connector footprint
PCBWay:
As a disclaimer, i get 10% kickback on shared pcbway orders, if you want the cheaper option go with either JLCPCB or OshPark
If you want to support me for free (and get 5 USD in new user credit) you can use my PCBWay Referral link when signing up on PCBWay
OSHPark:
Make sure to select the "2 oz copper, 0.8mm thickness" option before checkout
JLCPCB:
Upload gerbers(.zip files) to JLCPCB
Make sure you order with the following settings:
PCB Thickness: 0.8
PCB Color: Any
Surface Finish: ENIG-RoHS
Gold Fingers: Yes (45° chamfered border)
Castellated Holes: No
Check out the Interactive BOM for an interactive website that lets you keep track of where everything goes.
| Reference | Part Number | Description | Package |
|---|---|---|---|
| U1 | AM29F016(2MB)/AM29F032(4MB)/MBM29F033C(4MB) | 2/4MB Flash Chip | TSOP-48/TSOP-40 |
| U2 | MBC3 | Get from real cartridge | LQFP-32 |
| U3 | FM18W08 | 256kbit FRAM | SOIC-28 |
| U4 | BA6129AF | Buy or get from real cartridge | SOIC-8 |
| U5 | 74LVC1G332GV,125 | 3-input OR gate | TSOP-6 |
| C1 | CL10B104KO8NNNC* | 100nF Capacitor | 0603 |
| C2 | CL10B104KO8NNNC* | 100nF Capacitor | 0603 |
| C3 | CL10B104KO8NNNC* | 100nF Capacitor | 0603 |
| C4 | CL10C150JB8NNNC* | 15pF Capacitor | 0603 |
| C5 | CL10C150JB8NNNC* | 15pF Capacitor | 0603 |
| C6 | CL10B104KO8NNNC* | 100nF Capacitor | 0603 |
| C7 | CL10B104KO8NNNC* | 100nF Capacitor | 0603 |
| R1 | RC0603FR-07330KL* | 330K Ω Resistor | 0603 |
| R2 | RC0603FR-0710KL* | 10K Ω Resistor | 0603 |
| R3 | RC0603FR-071KL* | 1K Ω Resistor | 0603 |
| SW1 (Unmarked) | K3-1296S-E1** | SPDT Switch | N/A |
| X1 | R26-32.768-12.5-10PPM | 32.768 kHz Crystal | N/A |
| Batt CR2025 | BK-6219-TR | CR2025 Coin Cell Retainer | N/A |
*Linked Capacitors/Resistors are suggestions, use whatever matches the ratings and package. **Switch is optional, and is only used with 4MB chips.
1.2:
- Fixed missing traces
1.3:
- Fixed some trace issues with Y1
- Rerouted the pcb entirely
1.4:
- Fixed a short between A16 and VCC
1.4.1:
- Changed AM29F016 footprint to make chip alignment easier
- Cleaned up traces (visual)
1.5:
- Updated kicad version from 5 to 6.0
- Redrew outline to be a closer match to original
- Added markings to make cart look more original
- Added switch for 2x2mb mode (this means the cart can store 2 separate roms, saves are still shared)
- Changed footprint designators
- Added test pads
- Added date marking
- Relocated alignment holes for a better fit
