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Z80 Z50Bus SBC
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SC118 v1.1 Processor Card for Z50Bus

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SC118 v1.1 (

Z80 processor card for Z50Bus

This card can work in a modest way as a Single Board Computer (SBC) or be used part of a larger system on a Z50Bus backplane.

Documentation at


SC118 v1.1 Processor

SC118 v1.1 Processor


ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted BOM_Manufacturer Part BOM_Supplier Part BOM_Supplier BOM_Manufacturer
1 100nF C1,C2,C3,C4,C5,C6,C7 CAP-RAD-2.54MM 7
2 Z80 CPU U1 PDIP-40-0.6 1 692-Z84C0010PEG Mouser
3 7.3728MHz X1 OSC-08 1 774-MXO45HS-3C-7.3 Mouser
4 RAM 128k bytes U2 PDIP-32-0.6 1 913-AS6C1008-55PCN Mouser
5 74HCT259 U5 PDIP-16 1 595-SN74HCT138N Mouser
6 EPROM 32k bytes U3 PDIP-28-0.6 1 556-AT27C256R-45PU Mouser
7 470R R1 AXIAL-0.3 1
8 GRN-3MM LED1 LED-3MM/2.54 1 WP934AD/GD 604-WP934ADGD Mouser Kingbright
9 RESET SW1 TACTILE-PTH-SW 1 479-1413 RS-Online
10 10k R2 AXIAL-0.3 1
11 Serial P2 HDR-1X06-S-M-2.54MM 1 undefined
12 Z50Bus P1 Z50BUS-HDR-2X25-A-M-2.54MM 1
13 8x10k RP1 SIL-9 1
14 GND P3 HDR-1X02-S-M-2.54MM 1
15 1nF C8 CAP-RAD-2.54MM 1
16 DS1233-5+ U6 TO92 WIDE 1 DS1233A-5+ 700-DS1233-5 Mouser
17 74HCT4075 U4 PDIP-14 1 595-CD74HCT4075E Mouser




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