License

GPL 3.0

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42D Memory Module

7 months ago 142
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

The design is based on SMBakers 64k memory module (www.smbaker.com).

Pageable 64k RAM memory module using 2x 32k RAM chips a 64kb ROM (16/32kb). I recommend using SCMonitor R3 with this module for ordinary operation. The module has been modified to be working with the #28 Z180 CPU module and SCMonitor 1.00 43. Address selectable, the default address is $38. RC2014 compliant

Documents

42d Memory Module

42d Memory Module

BOM

ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted BOM_Manufacturer Part BOM_Supplier BOM_Manufacturer BOM_Supplier Part
1 62256P RAM1,RAM2 DIP28-600 2
2 100nF C2,C3,C1,C4,C5,C6,C7 RAD-0.1 7
3 27C512D ROM1 DIP28-600 1
4 SN74HCT32N U4 DIP14 1
5 SN74HCT74N U2 DIP14 1
6 SN74HCT139N U1 DIP16 1
7 SN74HCT238E U3 DIP16 1
8 DIP switchEI-08 DIP1 DIP-8-2.54MM 1 DIP switchEI-08 LCSC DIP C90019
9 2.54mm 1x40P RC40_BUS HDR-2.54-Z-1X40P 1 2.54mm 1x40P LCSC BOOMELE C2337
10 Header-Male-2.54_1x3 P4,P6 HDR-3X1/2.54 2 Header2.54mm 1*3P LCSC BOOMELE C49257
11 Header-Male-2.54_1x1 P5,P7 HDR-1X1/2.54 2 Header-Male-2.54_1x1 LCSC ReliaPro C81276
12 10k R1,R2 AXIAL-0.3 2

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