4 layers101.6 × 101.6 mm
2 layers196.3 × 114.7 mm
This was the final project for the Microcomputer Design Course at LeTourneau University.
- Size
- 196.3 × 114.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 85
- Nets
- 116
- Pads
- 483
- Tracks, vias
- 1,514, 1,276
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 20 Nov 2024
- Updated
- 20 Nov 2024
Overview
MCD Rev2 is an open-source printed circuit board by prrtzel, from the prrtzel/GeorgeOS-Single-Board-Computer repository on GitHub. It is a 2-layer board of 196.3 × 114.7 mm with 85 parts on 116 nets, routed with 1,514 tracks and 1,276 vias.
It is built around the SST39SF020A-70-4C-PHE, AS6C1008-55PCN and AP2114HA-3.3TRG1, with the STM1001LWX6F, XR68C681CJ-F and ECS-100AX-036 among its other parts. Its parts include 25 resistors, 23 capacitors, 10 ICs, 8 diodes and 8 connectors. It belongs with the FPGA and CPLD boards of this library.
Main components
7
SST39SF020A-70-4C-PHE
PDIP-320℃~+70℃ 100 Years 100,000 cycles 18ms 2Mbit 30uA 4.5V~5.5V PDIP-32 NOR FLASH ROHSMicrochip TechnologyNOR FLASH
AS6C1008-55PCN
PDIP-320℃~+70℃ 1Mbit 1uA 2.7V~5.5V 55ns 60mA PDIP-32 SRAM ROHSAlliance MemorySRAM
AP2114HA-3.3TRG1
SOT-223-40℃~+85℃@(Ta) 1 1A 3.3V 30uVrms 65dB@(1kHz) 65uA 6V 750mV@(1A) Fixed Over Current Protection、Thermal Shutdown、使能控制 Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
STM1001LWX6F
SOT-23-40℃~+85℃@(TA) 1 1V~5.5V 30ms 4.63V Active Low Open-drain Voltage monitor SOT-23 Supervisor and Reset ICs ROHSSTMicroelectronicsSupervisor And Reset ICs
XR68C681CJ-F
PLCC-44(16.6x16.6)2 5V Low-power mode、Hardware flow control support、Automatic error detection PLCC-44(16.6x16.6) UART ROHSMaxLinearUART
ECS-100AX-036
DIP-40℃~+70℃ 15mA 3.6864MHz 5V TTL DIP-4 Crystal Oscillators ROHSECSCrystal Oscillators
ECS-100AX-080
DIP-4DIP-4 Crystal Oscillators ROHSECSCrystal Oscillators
README
README.mdGeorgeOS Single Board Computer
This was the final project for the Microcomputer Design Course at LeTourneau University.
Software for this project can be found here: Morg Monitor Program
The schematic and PCB designs can be viewed in detail using the Kicanvas Online Viewer
The requirements for the project were as follows:
- Read from memory
- Write to memory
- Read from registers
- Write to registers
- Load an S-Record file
- Jump to the S-Record file and run it
Schematic
Printed Circuit Board
Assembled Board
Hardware Specifications
- Motorola 68000 32-bit CPU with an 8MHz clock speed
- Xilinx XC9572XL CPLD for address decoding / glue logic
- Dual channel UART interface for serial communication
Parts
85| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 4k7 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6, R7, R8, R10, R11, R12, R13, R14, R15, R24, R25 +1 |
| 14 | 0u1 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C6, C8, C9, C10, C14, C15, C16, C17, C20, C21, C22, C23 |
| 8 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16, R17, R18, R19, R20, R21, R22, R23 |
| 8 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D2, D3, D4, D5, D6, D7, D8 |
| 7 | 0u01 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C5, C7, C11, C12, C13 |
| 6 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | BERR, HALT, LDS, R/W, RESET, UDS |
| 2 | 4u7 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C18, C19 |
| 2 | AS6C1008-55PCN | Imported:PDIP32_PH_SST_MCH | U2, U3 |
| 2 | LOGO | LOGO | G***, G*** |
| 2 | SST39SF020A-70-4C-PHE | Imported:PDIP32_PH_SST_MCH | U4, U5 |
| 1 | ABUS | Imported:CON18_2X9_TU_HTS_SAI | J3 |
| 1 | AP2114HA-3.3TRG1 | Imported:SOT-223_DIO-L | U7 |
| 1 | Conn_01x02_Male | Imported:CON2_1X2_TU_HTS_SAI | J6 |
| 1 | DBUS_HIGH | Imported:CON8_1X8_TU_HTS_SAI | J2 |
| 1 | DBUS_LOW | Imported:CON8_1X8_TU_HTS_SAI | J1 |
| 1 | DUART A | Imported:CON6_1X6_TU_HTS_SAI | J7 |
| 1 | DUART B | Imported:CON6_1X6_TU_HTS_SAI | J8 |
| 1 | ECS-100AX-036 | Imported:OSC_ECS-100AX-036 | Y1 |
| 1 | ECS-100AX-080 | Imported:OSC_ECS-100AX-080 | Y2 |
| 1 | JTAG | Imported:CON6_1X6_TU_HTS_SAI | J5 |
| 1 | MAX6816EUS_T | Package_TO_SOT_SMD:SOT-143_Handsoldering | U8 |
| 1 | MC68000FN | Imported:3M_8468-11B1-RK-TP | U9 |
| 1 | POWER | Imported:CON4_1X4_TU_HTS_SAI | J4 |
| 1 | STM1001LWX6F | Imported:SOT-23_STM-L | U10 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | XC9572XL-PC44 | Imported:TO_11B1-RK-TP_3MM | U1 |
| 1 | XR68C681CJ-F | Imported:TO_11B1-RK-TP_3MM | U6 |
Questions
How big is the MCD Rev2 PCB?
It measures 196.3 × 114.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MCD Rev2 use?
85 parts, built around the SST39SF020A-70-4C-PHE, AS6C1008-55PCN, AP2114HA-3.3TRG1 and STM1001LWX6F. 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 MCD Rev2 KiCad files?
From the prrtzel/GeorgeOS-Single-Board-Computer repository on GitHub, at the commit this page was made from: the board is Hardware/KiCAD/MCD_Rev2.kicad_pcb and its schematic Hardware/KiCAD/MCD_Rev2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MCD Rev2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask prrtzel before reusing the design.
Similar boards
- 2 layers53.3 × 22.9 mm
BluePillF4
rogerclarkmelbourne/STM32_Pill_Boards
Various STM32 boards in a form factor similar to the Maple Mini or Blue Pill board
198 parts51 - 2 layers54 × 12.5 mm
BrodBoost C2
axiometa/BrodBoost-C2
USB - C Breadboard Powersupply: BrodBoost-C
31 parts36CERN-OHL-S-2.0 - 4 layers32 × 80 mm
- 4 layers30 × 40 mm
Imu module
bit-bots/bitbots_imu_dxl
The Bitbots IMU DXL module is a Sensor module that can be connected to the Dynamixel Bus (RS485 or TTL).
36 parts4MIT - 2 layers45.7 × 22.9 mm
- 2 layers99.1 × 108.6 mm
PROJ500 - Power Distribution Board
AislingBee/MEng-PROJ500-2025-26
The Github Repository for MEng project 2025/26
317 parts - 4 layers38 × 55 mm
