2 layers199 × 34 mm
Display Board
juniperlynx/Uno-14500
A trainer / demonstration system for the Motorola MC14500B
49 parts1
2 layers212 × 126 mm
Uno-14500
juniperlynx/Uno-145001A trainer / demonstration system for the Motorola MC14500B
- Size
- 212 × 126 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 84
- Nets
- 112
- Pads
- 492
- Tracks, vias
- 1,273, 151
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 21 Aug 2024
- Updated
- 26 Aug 2024
Overview
Uno-14500 is an open-source printed circuit board by juniperlynx, from the juniperlynx/Uno-14500 repository on GitHub. It is a 2-layer board of 212 × 126 mm with 84 parts on 112 nets, routed with 1,273 tracks and 151 vias.
It is built around the 74HC02, 74HC00D and 74HC193D, with the 74HC251D, 74HC259D and L7805 among its other parts. Its parts include 20 capacitors, 16 resistors, 15 ICs, 14 connectors and 6 diodes.
Main components
674HC02
-- Logic Gates ROHSonsemiLogic Gates
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
74HC193D
SO-16-40℃~+125℃ 1 18ns@6V 2V~6V 4 49MHz 500mW 74HC Asynchronous Divide-by-2 Reset function、Synchronous counting、Asynchronous parallel load、Multi-mode counting Rising Edge Synchronous Up Counter、Down Counter SO-16 Counters, Dividers ROHSNexperiaCounters / Dividers
74HC251D
SOIC-16-40℃~+125℃ 14ns@6.0V,50pF 160uA 2V~6V 5.2mA 5.2mA 74HC 8/2 Multiplexer Output enable high-impedance、Tri-state output Single Supply SOIC-16 Signal Switches, Multiplexers, Decoders ROHSNexperiaSignal Switches, Multiplexers, Decoders74HC259D
SOP-16L-40℃~+125℃ 15ns 17ns 2V~6V 40uA 5ns 74HC 8 Addressable Latch SOP-16L Latches ROHSMDDLatches
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdUno 14500
The Uno 14500 is a demonstration and training system built around the Motorola MC14500BCP Industrial Control Unit.
Its design borrows heavily from several sources including the Motorola ICU Handbook, Usagi Electric's MC14500 SBC, Nicola Cimmino's PLC14500, and my original Uno computer, a CMOS CPU I wire wrapped in college.
The system has 256 bytes of program memory, an 8 bit scratch register, an 8 bit output register, and an 8 bit input mux.
Program Input is primarily through toggle switches on the front panel, though memory boards with external ROMs are planned for the future. Switch and LED I/O is built into the console, and an external I/O connector is provided to use other peripherals.
I/O and memory mapping is designed to be compatible with either the MCU demonstration system from the Motorola ICU Handbook and the PLC14500 and the mapping of RR into I/O space is jumper selectable on the "Config" header. This header also houses jumpers to enable usage of the JMP and F flags from the CPU for returning to the reset vector and halting the system respectively
This repo, and the system, are still very much works in progress so check back as things are added.
Parts
84| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 0.1uF | Capacitor_THT:C_Axial_L3.8mm_D2.6mm_P10.00mm_Horizontal | C1, C2, C3, C4, C5, C9, C10, C11, C12, C13, C14, C15, C16, C17 |
| 8 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R12 |
| 3 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R11, R16, R17 |
| 3 | 4.7uF | Capacitor_THT:C_Rect_L4.6mm_W3.0mm_P2.50mm_MKS02_FKP02 | C7, C8, C20 |
| 3 | 74HC02 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U2, U13, U15 |
| 2 | 10K | Resistor_THT:R_Array_SIP9 | RN1, RN2 |
| 2 | 2101 | Package_DIP:DIP-22_W10.16mm_Socket_LongPads | U11, U12 |
| 2 | 47K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R18, R19 |
| 2 | 47nF | Capacitor_THT:C_Axial_L3.8mm_D2.6mm_P10.00mm_Horizontal | C19, C21 |
| 2 | 74HC00 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U3, U14 |
| 2 | 74HC193 | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | U9, U10 |
| 2 | 74HC251 | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | U6, U7 |
| 2 | 74HC259 | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | U4, U5 |
| 2 | HALT | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | D3, J3 |
| 2 | RUN | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | D4, J16 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C6 |
| 1 | 150K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10 |
| 1 | 15K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8 |
| 1 | 1M | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R9 |
| 1 | 1N4004 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | 1N5404 | Diode_THT:D_DO-201AE_P15.24mm_Horizontal | D2 |
| 1 | 750mA | Fuse:Fuseholder_Clip-5x20mm_Eaton_1A5601-01_Inline_P20.80x6.76mm_D1.70mm_Horizontal | F1 |
| 1 | CLK_SRC | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J5 |
| 1 | CONFIG | Connector_IDC:IDC-Header_2x05_P2.54mm_Horizontal | J13 |
| 1 | DATA SW | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J1 |
| 1 | DISP1 | Connector_IDC:IDC-Header_2x09_P2.54mm_Vertical | J17 |
| 1 | DISP2 | Connector_IDC:IDC-Header_2x12_P2.54mm_Vertical | J11 |
| 1 | EXT_MEM | Connector_IDC:IDC-Header_2x10_P2.54mm_Horizontal | J6 |
| 1 | I / O | Connector_IDC:IDC-Header_2x10_P2.54mm_Horizontal | J8 |
| 1 | INPUT SW | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J2 |
| 1 | L7805 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U16 |
| 1 | LD_ADDR | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J7 |
| 1 | LD_INST | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J10 |
| 1 | LOGO | Logo:PCBway Logo | G*** |
| 1 | LOGO | Logo:JNP-3R Logo | G*** |
| 1 | MC14500B | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | U1 |
| 1 | PC_PHASE | Jumper:SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm | JP1 |
| 1 | POWER | Uno Switches:SW_SPDT_SW-R3-2B-C-5-13 | SW1 |
| 1 | PWR_IN | Connector_BarrelJack:BarrelJack_Horizontal | J9 |
| 1 | RESET | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J12 |
| 1 | SPEED | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J15 |
| 1 | STEP | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J14 |
| 1 | U14-10 | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP3 |
| 1 | U14-9 | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP2 |
The 80 most common of 84 parts.
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Questions
How big is the Uno-14500 PCB?
It measures 212 × 126 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Uno-14500 use?
84 parts, built around the 74HC02, 74HC00D, 74HC193D and 74HC251D. 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 Uno-14500 KiCad files?
From the juniperlynx/Uno-14500 repository on GitHub, at the commit this page was made from: the board is KiCAD Files/Main Board/Main Board.kicad_pcb and its schematic KiCAD Files/Display Board/Display Board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Uno-14500 design in my own project?
Its repository states no licence, so its author keeps all rights: ask juniperlynx before reusing the design.