LB-MEM-03

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LB-MEM-03 P1659-720px.jpg

  • EPROM/EEPROM card
  • 32-pin ZIF socket
  • Up to 1MB
    • Headers to jump for smaller parts
  • Connects to Address/Data and Memory control lines
  • 50x75mm card


Design

EPROM in ZIF socket

LB-MEM-03 EPROM.PNG

EPROM Size Jumpers

LB-MEM-03 JUMPERS.PNG

  • J2 (A15/Vcc)
    • Pin 3 on 32-pin part
    • Pin 1 on 28-pin part
  • J3 (A19/Vcc)
    • Pin 1 on 32 pin part
    • Not used on 28-pin part
  • J4 (A17/Vcc)
    • Pin 30 on 32-pin part
    • Pin 28 on 28-pin part
  • J5 (A18/Vcc)
    • Pin 31 on 32-pin part
    • Not used on 28-pin part
  • J6 (A14/Vcc)
    • Pin 29 on 32-pin part
    • Pin 27 on 28-pin part

27C256/27C512 EPROMs

LB-MEM-03 EPROM 27C256 512.PNG

  • 28 pin parts
  • 27C256 jumpers (32B)
    • J2:1-2 (Vcc)
    • J3 - Not installed
    • J4:1-2 (Vcc)
    • J5 - Not installed
    • J6:2-3 (A14)
  • 27C512 jumpers (64KB)
    • J2:2-3 (A15)
    • J3 - Not installed
    • J4::1-2 (Vcc)
    • J5 - Not installed
    • J6:2-3 (A14)

All EPROMs

LB-MEM-03 EPROM VARS.PNG

Backplane

LB-MEM-03 BKPL.PNG

Mechanicals

LB-MEM-03 REV1 MECH.PNG

Checkout

Rev 1

  • Holes were very tight for ZIF pins

Assembly Sheet

  • Interactive BOM
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