LB-MEM-03

• 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

EPROM Size Jumpers

• 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

• 28 pin parts
• 27C256 jumpers (32B)
  • A15: J2:1-2 (Vcc)
  • A19: J3 - Not installed
  • A17: J4:1-2 (Vcc)
  • A18 J5 - Not installed
  • A14: J6:2-3 (A14)

• 27C512 jumpers (64KB)
  • A15: J2:2-3 (A15)
  • A19: J3 - Not installed
  • A17: J4::1-2 (Vcc)
  • A18: J5 - Not installed
  • A14 J6:2-3 (A14)

All EPROMs

Backplane

Mechanicals

Checkout

Rev 2

• Rev 2 PCB holes are good size
• Tested with LB-6809-01 card
  • Works

Rev 1

• Holes were very tight for ZIF pins

Assembly Sheet

• Interactive BOM