HONEYWELL 05704-A-0121卡件，数据库
SRAM由MC2chip控制，访问时间为可编程。请参阅MVME172 VME中的MC2chip说明有关更多详细信息，请参阅嵌入式控制器程序员参考指南。关于电池机载SRAM的电源为EM1275带有两个BR1225的设备（或同等设备，如RAYOVAC FB1225）-类型锂电池。电池带有插座，便于拆卸和安装替换提供小电容器，以便电池可以快速更换，无数据丢失。电池的使用寿命在很大程度上取决于环境电路板温度和通电占空比。
HONEYWELL 05704-A-0121卡件锂MVME172LX上提供的电池应至少使用两年在电路板断电和环境温度下的备份时间温度为40°C。如果通电占空比为50%，则电路板为电池寿命为四年。在较低在环境温度下，备份时间相应更长。如果您打算将电路板放入存储器，通过停止振荡器将M48T58置于省电模式将延长电池寿命。这是在高环境温度下尤其重要。进入省电模式模式下，执行172Bug PS命令（请参阅中的调试器命令）第3）章）或其等效的应用程序特定命令。恢复时电路板维修时，执行172Bug SET命令（SETmmddyyhhmm）安装后重新启动振荡器并初始化时钟MVME172LX出厂时电池已断开（VMEbus+5V备用电压选择为一次和二次电压电源）。如果您打算将电池用作电源，是一次或二次，有必要重新配置J14上的跳线安装板之前。请参阅SRAM备用电源选择第1-9页的标题（J14），用于可用跳线配置。电池的电源线暴露在电池的焊接侧板电路板不应放置在导电表面或储存在除非拆下电池，否则使用导电袋。锂电池包含易燃材料，例如锂和有机溶剂。如果锂电池如果受到虐待或处理不当，它们可能会爆裂并点燃，可能导致受伤和/或火灾。交易时对于锂电池，请仔细遵守列出的注意事项为了防止事故发生。
The SRAM is controlled by the MC2chip, and the access time is
programmable. Refer to the MC2chip description in the MVME172 VME
Embedded Controller Programmer’s Reference Guide for more detail.
About the Batteries
The power source for the onboard SRAM is an Electro Marketing EM1275
device (or equivalent, such as RAYOVAC FB1225) with two BR1225-
type lithium cells. The battery is socketed for easy removal and
replacement. Small capacitors are provided so that the batteries can be
quickly replaced without data loss.
The service life of the batteries is very dependent on the ambient
temperature of the board and the power-on duty cycle. The lithium
batteries supplied on the MVME172LX should provide at least two years
of backup time with the board powered off and with an ambient
temperature of 40° C. If the power-on duty cycle is 50% (the board is
powered on half of the time), the battery lifetime is four years. At lower
ambient temperatures, the backup time is correspondingly longer.
If you intend to place the board in storage, putting the M48T58 in powersave mode by stopping the oscillator will prolong battery life. This is
especially important at high ambient temperatures. To enter power-saving
mode, execute the 172Bug PS command (refer to Debugger Commands in
Chapter 3) or its equivalent application-specific command. When restoring
the board to service, execute the 172Bug SET command (set
mmddyyhhmm) after installation to restart the oscillator and initialize the
clock.
The MVME172LX is shipped with the batteries disconnected (i.e., with
VMEbus +5V standby voltage selected as both primary and secondary
power source). If you intend to use the battery as a power source, whether
primary or secondary, it is necessary to reconfigure the jumpers on J14
before installing the board. Refer to SRAM Backup Power Source Select
Header (J14) on page 1-9 for available jumper configurations.
The power leads from the battery are exposed on the solder side of the
board. The board should not be placed on a conductive surface or stored in
a conductive bag unless the battery is removed.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.
