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SRAM Board

kr239·A500-SRAM-Board·schematics/SRAM Board.kicad_pcb

SRAM Board layout, top view — open source board by kr239
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About the SRAM Board

SRAM Board is an open source PCB design by kr239, published on GitHub under the GPL-2.0 license. It is a 2-layer board measuring 105.4 × 50.8 mm, with 15 components from 5 distinct parts.

Other key parts include the SN74ABT821ADW, 74HC00, CY62157ESL-45ZSXI and 44256_DRAM. By type, the board carries 11 ICs and 4 capacitors.

It belongs with the retro computing designs in this gallery.

From the project

Replace the old 44256 DRAM chips on your A500 with newer SRAM memory

Remember to grab the A500 Parts Library so that you have the correct footprints.

Main components on the SRAM Board

SN74ABT821ADW74HC00CY62157ESL-45ZSXI44256_DRAM

SRAM Board bill of materials (BOM)

15 components, 5 distinct parts.

QtyPartRefs
1
SN74ABT821ADW
U1
1
74HC00
U2
1
CY62157ESL-45ZSXI
U3
8
44256_DRAM
U16, U17, U18, U19, U20, U21, U22, U23
4
0.1uF
C1, C2, C3, C4

SRAM Board design files

The KiCad project lives in the kr239/A500-SRAM-Board repository on GitHub; these links point at the commit this page was built from.

SRAM Board: common questions

How big is the SRAM Board?

The SRAM Board measures 105.4 × 50.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SRAM Board?

15 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the SRAM Board design files?

From the kr239/A500-SRAM-Board repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the SRAM Board design in my own project?

Yes, under the terms of its GPL-2.0 license, which kr239 chose for the repository.

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