2 layers96.5 × 132.1 mm
2 layers127 × 127 mm
6502 sbc
davidday99/6502-sbc6502 SBC EE schematics and software
- Size
- 127 × 127 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 60
- Nets
- 122
- Pads
- 414
- Tracks, vias
- 1,263, 215
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 11 Jun 2025
- Updated
- 11 Jun 2025
Overview
6502 sbc is an open-source printed circuit board by davidday99, from the davidday99/6502-sbc repository on GitHub. It is a 2-layer board of 127 × 127 mm with 60 parts on 122 nets, routed with 1,263 tracks and 215 vias.
It is built around the FT232RL, 74HC00D and CAT28C256GI-15T, with the CY62256NLL-55SNXI, DS1813-5+ and SB140 among its other parts. Its parts include 16 capacitors, 13 connectors, 10 ICs, 5 resistors and 5 diodes. It belongs with the computers and single-board computers and retro computing and games boards of this library.
Main components
6
FT232RL
SSOP-28-208mil-40℃~+85℃ 3.3V~5.25V、4V~5.25V USB 2.0 USB to UART SSOP-28-208mil USB Converters ROHSFTDIUSB Converters
74HC00D
SOP-14-40℃~+125℃ 1.5V、3.15V、4.2V 1.9V、3.7V、5.9V 100mV、400mV、400mV 2 2V~6V 4 40uA 5.2mA 5.2mA 500mV~1.8V 74HC Series 7ns@6V,50pF NAND Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
CAT28C256GI-15T
PLCC-32(11.4x14)PLCC-32(11.4x14) EEPROM ROHSonsemiEEPROM
CY62256NLL-55SNXI
SOIC-28-300mil-40℃~+85℃ 10uA 256Kbit 4.5V~5.5V 50mA 55ns Auto power-down function Parallel Port (Parallel) SOIC-28-300mil SRAM ROHSAlliance MemorySRAMDS1813-5+
TO-92-3-40℃~+85℃@(Ta) 1 1.2V~5.5V 150ms 4.75V Active Low No Open Drain Voltage Monitor Yes TO-92-3 Supervisor and Reset ICs ROHSAnalog DevicesSupervisor And Reset ICs
SB140
DO-41-65℃~+125℃ 1 Independent 1A 30A 40V 500mV@1A 500uA@40V DO-41 Schottky Diodes ROHSonsemiSchottky Diodes
Parts
60| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 22uF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C16 |
| 7 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1, J8, J9, J10, J11, J12, J13 |
| 4 | MountingHole | MountingHole:MountingHole_2.5mm_Pad | H1, H2, H3, H4 |
| 4 | TestPoint | TestPoint:TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP1, TP2, TP3, TP4 |
| 3 | LED | LED_SMD:LED_0805_2012Metric | D2, D4, D5 |
| 2 | 270 | Resistor_SMD:R_0805_2012Metric | R4, R5 |
| 2 | 3.3K | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | Conn_02x06_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J2, J3 |
| 2 | SB140 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D3 |
| 1 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C15 |
| 1 | 100uF | Capacitor_SMD:CP_Elec_6.3x5.3 | C14 |
| 1 | 220 | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 74HC00 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U10 |
| 1 | 74LS138 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U9 |
| 1 | ASCO | Oscillator:Oscillator_SMD_EuroQuartz_XO53-4Pin_5.0x3.2mm | X2 |
| 1 | AT28C256-15SU | Package_LCC:PLCC-32_THT-Socket | U3 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_GCT_DCJ200-10-A_Horizontal | J4 |
| 1 | CXO_DIP8 | Oscillator:Oscillator_DIP-8 | X1 |
| 1 | CY62256NLL-55SNXI | Package_SO:TSOP-I-28_11.8x8mm_P0.55mm | U4 |
| 1 | Conn_01x03_Pin | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J7 |
| 1 | Conn_02x20_Counter_Clockwise | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J5 |
| 1 | DS1813 | Package_TO_SOT_THT:TO-92 | U2 |
| 1 | FT232RL | Package_SO:SSOP-28_5.3x10.2mm_P0.65mm | U8 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_Omron_B3FS-100xP | SW1 |
| 1 | TLV1117-50 | Package_TO_SOT_SMD:SOT-223 | U6 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Amphenol_10118194_Horizontal | J6 |
| 1 | W65C02SxP | Package_LCC:PLCC-44_THT-Socket | U1 |
| 1 | W65C22SxP | Package_LCC:PLCC-44_THT-Socket | U5 |
| 1 | W65C51NxQ | Package_LCC:PLCC-28_THT-Socket | U7 |
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Questions
How big is the 6502 sbc PCB?
It measures 127 × 127 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 6502 sbc use?
60 parts, built around the FT232RL, 74HC00D, CAT28C256GI-15T and CY62256NLL-55SNXI. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the 6502 sbc KiCad files?
From the davidday99/6502-sbc repository on GitHub, at the commit this page was made from: the board is ee/v2/6502_sbc/6502_sbc.kicad_pcb and its schematic ee/v1/6502_sbc/6502_sbc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 6502 sbc design in my own project?
Its repository states no licence, so its author keeps all rights: ask davidday99 before reusing the design.