2 layers237.5 × 102.9 mm
Instruction
jes/scamp-cpu
A homebrew 16-bit CPU with a homebrew Unix-like-ish operating system.
112 parts301Unlicense
2 layers98.3 × 75.6 mm
Sbc6802
ryu10/sbc68026Single Board Computer based on Motorola 6802
- Size
- 98.3 × 75.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 34
- Nets
- 51
- Pads
- 260
- Tracks, vias
- 1,287, 18
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 16 Nov 2019
- Updated
- 19 Feb 2021
Overview
Sbc6802 is an open-source printed circuit board by ryu10, from the ryu10/sbc6802 repository on GitHub. It is a 2-layer board of 98.3 × 75.6 mm with 34 parts on 51 nets, routed with 1,287 tracks and 18 vias.
It is built around the 74LS00SC and 74LS04PC. Its parts include 12 capacitors, 8 ICs, 4 resistors, 2 connectors and 1 diode. It belongs with the computers and single-board computers boards and the PIC boards of this library.
Main components
2README
README.mdSBC6802 plus Bus
Ja | En
Rev. 2
An MC6802-based single board computer. The board design is derived from SBC6800 and SBC6809.
Features
- MC6802 1MHz
- RAM 32KB (0x0000 - 0x7fff)
- ROM 16KB (0xc000 - 0xffff x two banks, selectable using JP1)
- ACIA (0x8018/0x8019)
- SBC-Bus 2.0 Connector
In This Repository
The following files are included, along with the KiCAD project:
Programming PIC12F1822
PIC12F1822（U7）can be programmed with osc1536.hex found in SBC6800 datapack to generate the clock for 6850 ACIA. The serial port will operate at 9600 bps.
SBC-Bus
The bus connector J1 supports SBC-Bus 2.0. Pin 38 is routed to 6802 VMA.
If the board is not connected to the SBC-Bus, connect the 5V and GND pins to a +5V regulated power supply.
Software
Most of the 6800 software found in SBC6800 datapack are compatible with SBC6802.
References
- SBC6800 / Technical Data PDF
- SBC6809
- SBC-Bus 2.0
- as0 Motorola 6800 Assembler
- M6800 Assembly VSCode Extension
License
CC-BY-SA 3.0 2019 ryu10/RyuStudio.
Derived from the original works of SBC6800 and SBC6809 (c) 2017-2018 Tetsuya Suzuki.
Parts
34| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 0.1u | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C4, C5, C7, C8, C9, C10, C11, C12 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3 | mh1, mh2, mh3, mh4 |
| 3 | 4.7k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3, R4 |
| 2 | 22p | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C2, C3 |
| 1 | 100u | Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm | C6 |
| 1 | 10u | Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm | C1 |
| 1 | 28C256 EEPROM | Package_DIP:DIP-28_W15.24mm | U5 |
| 1 | 47k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 4MHz | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | Y1 |
| 1 | 71256 32KB SRAM | Package_DIP:DIP-28_W7.62mm | U6 |
| 1 | 74LS00 | Package_DIP:DIP-14_W7.62mm | U3 |
| 1 | 74LS04 | Package_DIP:DIP-14_W7.62mm | U2 |
| 1 | 74LS138 | Package_DIP:DIP-16_W7.62mm | U4 |
| 1 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J2 |
| 1 | Conn_02x20_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J1 |
| 1 | D | Diode_THT:D_A-405_P7.62mm_Horizontal | D1 |
| 1 | Jumper_NO_Small | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | LOGO | qr:qr_github_sbc6802_r2 | logo1 |
| 1 | MC6802 | Package_DIP:DIP-40_W15.24mm | U1 |
| 1 | MC6850 | Package_DIP:DIP-24_W15.24mm | U8 |
| 1 | PIC12F1822-IP | Package_DIP:DIP-8_W7.62mm | U7 |
Questions
How big is the Sbc6802 PCB?
It measures 98.3 × 75.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sbc6802 use?
34 parts, built around the 74LS00SC and 74LS04PC. 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 Sbc6802 KiCad files?
From the ryu10/sbc6802 repository on GitHub, at the commit this page was made from: the board is KiCAD/sbc6802.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sbc6802 design in my own project?
Its repository states no licence, so its author keeps all rights: ask ryu10 before reusing the design.
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