HardLabs

GW4302

garrettsworkshop·GW4302

GW4302 PCB layout, top view — open source FPGA board by garrettsworkshop

About the GW4302 PCB

GW4302 is an open source FPGA PCB design by garrettsworkshop, published on GitHub under the Custom license license. It is a 4-layer board measuring 57.9 × 59.4 mm, with 95 components from 27 distinct parts.

Its main chip is the LCMXO2-640-TG100, from the FPGA family. Other key parts include the W9825G6KH-6, W25Q128JVSIQ, 74AHCT125PW, 74LVC245APW and 74AHCT573PW. By type, the board carries 40 capacitors, 28 resistors, 16 ICs, 4 connectors, 1 crystal and 1 diode.

It belongs with the retro computing designs in this gallery.

From the project

Prototype RAM cartridge compatible with Commodore 1700/1750/1764 RAM Expansion Unit (REU)

Main components on the GW4302

LCMXO2-640-TG100W9825G6KH-6W25Q128JVSIQ74AHCT125PW74LVC245APW74AHCT573PWCH340G74LVC1G17GWXC6206P332MRLM66200DRL

GW4302 bill of materials (BOM)

95 components, 27 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LCMXO2-640-TG100
U1
1
W9825G6KH-6
U2
1
W25Q128JVSIQ
U3
2
74AHCT125PW
U4, U5
4
74LVC245APW
U6, U10, U11, U12
3
74AHCT573PW
U7, U8, U9
1
CH340G
U13
1
74LVC1G17GW
U14
1
XC6206P332MR
U15
1
LM66200DRL
U16
1
12M
Y1
1
C64
J1
1
microUSB
J2
1
JTAG
J3
1
BTN
J4
2
~
H1, H2
3
~
H3, H4, H5
1
LED
D1
33
2U2
2u2
C1, C2, C3, C4, C5, C6, C7, C8 +25
4
10U
10u
C9, C10, C11, C12
Show 7 more
QtyPartRefs
3
22P
22p
C37, C38, C39
8
47
R1, R2, R6, R7, R10, R21, R24, R26
7
10K
10k
R3, R4, R9, R11, R12, R13, R14
2
1k
R5, R28
3
DNP
R8, R23, R25
7
3K3
3k3
R15, R16, R17, R18, R19, R20, R27
1
220
R22

GW4302 design files

The KiCad project lives in the garrettsworkshop/GW4302 repository on GitHub; these links point at the commit this page was built from.

GW4302: common questions

What microcontroller does the GW4302 use?

The GW4302 is built around the LCMXO2-640-TG100, from the FPGA family.

How big is the GW4302 PCB?

The GW4302 measures 57.9 × 59.4 mm, has 4 copper layers and is 1.6108 mm thick.

How many components are on the GW4302?

95 components, from 27 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the GW4302 design files?

From the garrettsworkshop/GW4302 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the GW4302 design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the GW4302 without the hardware?

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

Similar boards