4 layers208.3 × 114.3 mm
2 layers146 × 134.6 mm
Raven68k rev2
jkuituni/Raven68k5A repository for all the hardware and software development related files for a 68000 based single board computer
- Size
- 146 × 134.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 78
- Nets
- 177
- Pads
- 615
- Tracks, vias
- 3,278, 177
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 3 Jan 2018
- Updated
- 28 Jan 2026
Overview
Raven68k rev2 is an open-source printed circuit board by jkuituni, from the jkuituni/Raven68k repository on GitHub. It is a 2-layer board of 146 × 134.6 mm with 78 parts on 177 nets, routed with 3,278 tracks and 177 vias.
It is built around the 74LS373SC, DS12887+ and SB140, with the SRN5040TA-101K and RAPC722BK among its other parts. Its parts include 28 capacitors, 21 resistors, 12 ICs, 5 diodes and 3 connectors. It belongs with the computers and single-board computers boards and the FPGA and CPLD boards of this library.
Main components
5
74LS373SC
--55℃~+125℃ 1 2.6mA 24mA 38ns@5V,150pF 4.75V~5.25V 74LS 8 Output enable Tri-State - Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, TransceiversDS12887+
EDIP-240℃~+70℃ 4.5V~5.5V Temperature compensation、Backup power management and battery charging、InsideSRAM/NVRAM、Programmable clock output、Alarm function、Power-off retention of registers、Periodic interrupt output EDIP-24 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
SB140
DO-41-65℃~+125℃ 1 Independent 1A 30A 40V 500mV@1A 500uA@40V DO-41 Schottky Diodes ROHSonsemiSchottky Diodes
SRN5040TA-101K
SMD,5x5mm100uH 560mΩ 720mA 750mA ±10% SMD,5x5mm Power Inductors ROHSBournsPower InductorsRAPC722BK
插件2mm 5A 6.3mm DC Power Jack Right Angle 插件 DC Power Connectors ROHSSwitchcraftDC Power Connectors
README
README.mdRaven68k
Raven 68k is a simple Motorola 68k family based single board computer. The machine will serve as a learning tool for building a 68k based machines for learning on how to interface various chips and add on expansions for the architecture. It is also aimed to be a platform for learning on how to write firmware and operating system level code and how to implement the required logic in VHDL code to tie in all of the functionality required. We are interested on eventually getting Linux up and running on the hardware as the Linux/m68k is still maintained and it supports many of the basic building blocks.
The project will be documented to a blog along with datasheets of all the components used.
Folder Structure
datasheets/ -- The datasheets of the components used in various revisions of Raven.
firmware/ - ROM images to boot and initialize the system.
software/ - S68 programs that can be loaded from the firmware. Many of these are built with EASy68k.
hardware/ -- KiCAD schematics and other files as well as VHDL code for the CPLD are located here.
Parts
78| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 0.1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C26, C27, C28 |
| 5 | 2.2k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2, R3, R4, R5 |
| 4 | 47uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C22, C23, C24, C25 |
| 3 | 4.7K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R11, R12, R15 |
| 3 | 4.7k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R6, R7, R8 |
| 2 | 10K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R9, R10 |
| 2 | 10uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C14, C15 |
| 2 | 220pF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C16, C17 |
| 2 | 22nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C18, C19 |
| 2 | 28C256 | Package_DIP:DIP-28_W15.24mm_Socket_LongPads | U10, U11 |
| 2 | 390 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R17, R18 |
| 2 | 470pF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C20, C21 |
| 2 | 680 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R20, R21 |
| 2 | L5970D013TR | Package_SO:SO-8_5.3x6.2mm_P1.27mm | IC1, IC2 |
| 2 | SB140 | Diode_SMD:D_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1, D2 |
| 2 | SRN5040TA-101K | raven68k-rev1:SRN5040TA101K | L1, L2 |
| 1 | 1.2K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R14 |
| 1 | 2.7K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R16 |
| 1 | 22 | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | RN1 |
| 1 | 3.3V | LED_THT:LED_D3.0mm | D3 |
| 1 | 3.9K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R13 |
| 1 | 330 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R19 |
| 1 | 5V | LED_THT:LED_D3.0mm | D4 |
| 1 | 68010D | Package_DIP:DIP-64_W25.4mm_Socket_LongPads | U2 |
| 1 | 68681 | Package_DIP:DIP-40_W15.24mm_Socket | U4 |
| 1 | 74LS373 | Package_DIP:DIP-20_W7.62mm_Socket_LongPads | U5 |
| 1 | CLOCK | Oscillator:Oscillator_DIP-14_LargePads | X1 |
| 1 | CONSOLE | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | U6 |
| 1 | CPLD_JTAG | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | CXO_DIP14 | Oscillator:Oscillator_DIP-14_LargePads | X2 |
| 1 | DS12887+ | Package_DIP:DIP-24_W15.24mm_Socket_LongPads | U7 |
| 1 | DUART_IO | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J2 |
| 1 | IDE-44-PIN | raven68k-rev1:SHDR44W55P200_2X22_4665X630X640P | H1 |
| 1 | LED | LED_THT:LED_D3.0mm | D5 |
| 1 | LOGO | raven68k-rev1:Raven_Logo | G*** |
| 1 | MCP100-465D | Package_TO_SOT_THT:TO-92L_HandSolder | U1 |
| 1 | MT16D832 | KISS68030 Lib:DRAM-72-2021 | U12 |
| 1 | POWER_SW | raven68k-rev1:GPTS203212B | S2 |
| 1 | RAPC722BK | raven68k-rev1:RAPC722BK | J3 |
| 1 | RESET_SW | raven68k-rev1:TS0266170BK160SCRD | SW1 |
| 1 | XC9572XL-TQ100 | Package_QFP:TQFP-100_14x14mm_P0.5mm | U3 |
Similar boards
- 2 layers158.8 × 159.8 mm
- 2 layers65 × 56 mm
Rpi simplex clock hat
hharte/rpi-simplex-clock-hat
Raspberry Pi Hat to control a Simplex synchronous clock.
26 parts1MIT - 2 layers95.9 × 112.6 mm
- 2 layers100 × 120 mm
PartyLine80
etherkit/PartyLine80
A cheap and cheerful 80 meter QRP CW radio made from all discrete components
194 parts4 - 2 layers88.5 × 74.5 mm
- 2 layers100 × 70 mm
- 2 layers221 × 179 mm
Questions
How big is the Raven68k rev2 PCB?
It measures 146 × 134.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Raven68k rev2 use?
78 parts, built around the 74LS373SC, DS12887+, SB140 and SRN5040TA-101K. 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 Raven68k rev2 KiCad files?
From the jkuituni/Raven68k repository on GitHub, at the commit this page was made from: the board is hardware/rev2/schematics/raven68k-rev2.kicad_pcb and its schematic hardware/rev1/schematic/raven68k-rev1/DUART.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Raven68k rev2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask jkuituni before reusing the design.