LB-MEM-04

Features

• 32KB/128KB/512KB SRAM
  • Jumper for 28, 32-pin SRAMs
• 16KB/32KB/64KB EPROM
  • Headers to select PROM bank
• Connects to Address/Data and Memory control lines
• 50x71mm card

Design

SRAM

SRAM Pinouts

EPROM

• TL866ii_Plus_Programmer

• LB-65CXX-01 card has 16 KB PROM from 0xC000-0xFFFF
• LB-6809-01 card has 16 KB PROM from 0xC000-0xFFFF
• LB-Z80-01 card has 8KB PROM from 0x0000-0x1FFF (upper 8KB is not used)

27C256/27C512 EPROMs

• Card has a 16KB size
• 27C256 (32KB) and 27C512 (64KB) Flash EPROMs are commonly available
• Jumpers allow firmware banks to be selected
  • 2 banks in 27C256
  • 4 banks in 27C512

Backplane Connector

Mechanicals

Checkout

Rev 1

• OK

Assembly Sheet

Rev 1

• Interactive BOM