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Cpld board max2

roberto314·Unicomp2·CPLD_board/schematic/cpld_board_max2/cpld_board_max2.kicad_pcb

Cpld board max2 layout, top view — open source STM32 board by roberto314

About the Cpld board max2

Cpld board max2 is an open source STM32 PCB design by roberto314, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 46 components from 20 distinct parts.

Its main chip is the STM32F401, from the STM32 family. Other key parts include the ebay MAX II board, 74HC245 and IS61LV256AL-10JL. By type, the board carries 27 connectors, 5 resistors, 4 switches, 4 capacitors, 3 ICs and 2 diodes.

It belongs with the retro computing designs in this gallery.

From the project

A modular 8-bit Computer able to recreate (nearly) every Retro computer of the late 70s to mid 80s.

A modular 8-bit Computer able to recreate (nearly) every microcomputer of the mid 70s to early 80s in Hardware without FPGAs (although an FPGA can be added). Can also be used as a teaching tool for:

VHDL or Verilog C RTOS (STM32F401 runs ChibiOS Link: https://www.chibios.org) Python bash and linux in general (Olimex board runs linux with fbterm and tmux) Harwaredesign Timing of CPUs maybe Assembler SPI and I2C Interfaces CPLDs and FPGAs

Cpld board max2, from the project README
From the project README

Main components on the Cpld board max2

ebay MAX II board74HC245IS61LV256AL-10JL

Cpld board max2 bill of materials (BOM)

46 components, 20 distinct parts.

QtyPartRefs
1
ebay MAX II board
U1
1
74HC245
U2
1
IS61LV256AL-10JL
U3
2
BUS-Master
J1, J2
2
BUS-Master-BO
J3, J4
1
BUS-AnHSYNCed
J5
1
STM32F401
J6
1
Micro_SD_Card_Det2
J7
1
USB_A_Molex_67643
J8
1
GND
J10
2
Conn_01x02
J11, J15
1
RX_TX
J12
1
Conn_02x05_Odd_Even
J13
14
.
J14, J16, J17, J18, J19, J20, J22, J23 +6
1
Jumper_3_Bridged12
JP1
4
SW_Push
SW1, SW2, SW3, SW4
2
RED
D1, D2
4
100n
C1, C2, C3, C4
3
10k
R1, R2, R3
2
220E
R4, R5

Cpld board max2 design files

The KiCad project lives in the roberto314/Unicomp2 repository on GitHub; these links point at the commit this page was built from.

Cpld board max2: common questions

What microcontroller does the Cpld board max2 use?

The Cpld board max2 is built around the STM32F401, from the STM32 family.

How big is the Cpld board max2?

The Cpld board max2 measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cpld board max2?

46 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Cpld board max2 design files?

From the roberto314/Unicomp2 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Cpld board max2 design in my own project?

The repository has no license, so all rights stay with roberto314. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Cpld board max2 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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