Technical data

Functional Description

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Warning

Lithium batteries incorporate inflammable materials such as

lithium and organic solvents. If lithium batteries are

mistreated or handled incorrectly, they may burst open and

ignite, possibly resulting in injury and/or fire. When dealing

with lithium batteries, carefully follow the precautions listed

below in order to prevent accidents.

❏ Do not short circuit.

❏ Do not disassemble, deform, or apply excessive pressure.

❏ Do not heat or incinerate.

❏ Do not apply solder directly.

❏ Do not use different models, or new and old batteries together.

❏ Do not charge.

❏ Always check proper polarity.

To remove the battery from the module, carefully pull the battery from the

socket.

Before installing a new battery, ensure that the battery pins are clean. Note

the battery polarity and press the battery into the socket. When the battery

is in the socket, no soldering is required.

EPROM and Flash Memory

The MVME172LX may be ordered with 2MB of Flash memory and two

EPROM sockets ready for the installation of the EPROMs, which may be

ordered separately. Flash memory is a single Intel 28F016SA device

organized in a 2Mb x 8 configuration. The EPROM locations are standard

JEDEC 32-pin DIP sockets that accommodate three jumper-selectable

densities (256 Kb x 8; 512 Kb x 8; 1 Mb x8). A jumper setting (GPI4, pins

9-10 on J21), allows reset code to be fetched either from Flash memory

(GPI4 installed) or from EPROMs (GPI4 removed).