2 layers124 × 83 mm
2 layers124 × 113 mm
Control board
edatki/e74-cpuA custom CPU implemented in 74-series logic
- Size
- 124 × 113 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 99
- Nets
- 174
- Pads
- 553
- Tracks, vias
- 1,577, 215
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 12 Jun 2023
- Updated
- 12 Jan 2024
Overview
Control board is an open-source printed circuit board by edatki, from the edatki/e74-cpu repository on GitHub. It is a 2-layer board of 124 × 113 mm with 99 parts on 174 nets, routed with 1,577 tracks and 215 vias.
It is built around the ATTINY85-20PU, 74LS373SC and 74LS74PC, with the 74LS192PC and 74LS273PC among its other parts. Its parts include 52 diodes, 13 resistors, 12 ICs, 4 switches and 3 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
5
ATTINY85-20PU
PDIP-8-40℃~+85℃ 10bit 2.7V~5.5V 20MHz 512Byte 512Byte 6 8 Bit 8KB AVR Built-in FLASH PDIP-8 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
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, Transceivers
74LS74PC
DIP-140ns 0℃~+70℃ 1 2 20MHz 3.5pF 35ns@5V,50pF 4.5ns 4.75V~5.25V 400uA 74LS Series 8mA 8mA Asynchronous Complementary D-Type Rising Edge Set and Reset DIP-14 Flip FlopsTexas InstrumentsFlip Flops
74LS192PC
-Counters, DividersTexas Instruments
74LS273PC
PDIP-201 15ns 27mA 27ns@5V,15pF 30MHz 5ns 74LS Series 8 D-Type Reset Rising Edge PDIP-20 Flip Flops ROHSonsemiFlip Flops
Parts
99| Qty | Value | Footprint | References |
|---|---|---|---|
| 52 | LED | LED_THT:LED_D2.0mm_W4.8mm_H2.5mm_FlatTop | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +36 |
| 7 | 330R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3, R4, R7, R8, R9, R12 |
| 6 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R5, R6, R10, R11, R13 |
| 6 | 330R | Resistor_THT:R_Array_SIP9 | RN5, RN6, RN7, RN8, RN9, RN10 |
| 4 | 1K | Resistor_THT:R_Array_SIP9 | RN1, RN2, RN3, RN4 |
| 4 | 27C512 | Package_DIP:DIP-28_W15.24mm_Socket | U7, U8, U9, U10 |
| 4 | MountingHole | MountingHole:MountingHole_3.5mm | H1, H2, H3, H4 |
| 4 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2, SW3, SW4 |
| 3 | 74LS74 | Package_DIP:DIP-14_W7.62mm_Socket | U1, U2, U12 |
| 2 | 74LS373 | Package_DIP:DIP-20_W7.62mm_Socket | U4, U6 |
| 1 | 74LS192 | Package_DIP:DIP-16_W7.62mm_Socket | U5 |
| 1 | 74LS273 | Package_DIP:DIP-20_W7.62mm_Socket | U3 |
| 1 | ATtiny85-20P | Package_DIP:DIP-8_W7.62mm_Socket | U11 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | Conn_02x32_Odd_Even | Connector_IDC:IDC-Header_2x32_P2.54mm_Vertical | J2 |
| 1 | ICSP | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J1 |
| 1 | R_Potentiometer | Potentiometer_THT:Potentiometer_Bourns_3386F_Vertical | RV1 |
Questions
How big is the Control board PCB?
It measures 124 × 113 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Control board use?
99 parts, built around the ATTINY85-20PU, 74LS373SC, 74LS74PC and 74LS192PC. 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 Control board KiCad files?
From the edatki/e74-cpu repository on GitHub, at the commit this page was made from: the board is hardware/Control_board/Control_board.kicad_pcb and its schematic hardware/Control_board/Control_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Control board design in my own project?
Its repository states no licence, so its author keeps all rights: ask edatki before reusing the design.
More from edatki/e74-cpu
2- 2 layers124 × 70 mm
Similar boards
- 2 layers486 × 306.3 mm
- 2 layers630 × 300 mm
- 4 layers254 × 137.7 mm
S100 ColorMagic-1.1-006
RichCini/LomasBoards
Small repository of files/data related to Lomas Data Products S-100 boards.
150 parts1 - 6 layers244 × 244 mm
Retroslop
CPTforever/8088-MicroATX-Computer
A 8088 based, IBM 5150 like computer compatible with the MicroATX motherboard form factor.
193 parts - 2 layers426 × 307 mm
I7000
felipesanches/Itautec_I7000_KICAD
Esquemáticos do computador Itautec I-7000 G desenhados a partir de inspeção do circuito das PCBs
115 parts - 4 layers298.9 × 270 mm
Dino v0 0 2
robertrico/dino-homebrew
A perfboard with the bus edge and the slot decode every DINO card repeats. Plug it into any of J1-J8 on the Rev 1.0 mainboard, pick the slot with one shunt, bodge the card on the grid.
239 parts - 2 layers254 × 134.6 mm
Z80-CPU
CatspersCoffee/S100-Boards
S-100 bus boards designed and built: Z80 and 80386 CPU cards, SRAM/DRAM memory, CPLD/FPGA I/O and SPI boards, an 18-slot backplane and bus terminator.
163 parts - 2 layers338.7 × 107.7 mm
