R911317453 MSK100C-0300-NN-SN-AG0-NNNN模块现货

R911317453 MSK100C-0300-NN-SN-AG0-NNNN

国家描述
4-2用户手册
4.
MC68040/MC68LC040微处理器
MVME162配备MC68040或MC68LC040微处理器。
MC68040/MC68LC040具有片上指令和数据缓存；这个
MC68040还提供浮点协处理器。请参阅M68040
有关更多信息，请参阅微处理器用户手册。
EPROM和闪存
MVME162实现包括四个组织的2-Mbit闪存设备
在256Kbit x 8配置中。EPROM位置是标准的JEDEC 32-
引脚PLCC能够实现4Mbit密度（128kbit x 8；256kbit x 7；512kbit x 8；
1Mbit x8）组织为512Kbit x 8设备。跳线设置（GPIO3，引脚9-
J22上的10）允许从闪存（GPIO3）获取重置代码
安装的）或从EPROM（GPIO3被移除）。
SRAM
MVME162在单个系统中提供512KB 32位宽的板载静态RAM
非交错架构，带车载电池备份。坏的情况
电池保护的运行时间为200天。SRAM的细节
性能可在中的SRAM内存控制器部分中找到
MVME162嵌入式控制器中的MCchip编程模型
程序员参考指南。SRAM阵列不受奇偶校验保护。
MVME162 SRAM的电池备份功能由达拉斯公司提供
DS1210S支持主电源和辅助电源的设备。在
如果主板电源故障，DS1210S将检查电源和
切换到具有较高电压的源。
如果备用电源的电压低于2伏，DS1210S将阻塞
第二存储周期；这允许软件向以下人员提供早期警告：
避免数据丢失。因为第二次访问可能在通电期间被阻止
失败时，软件应在依赖数据之前至少进行两次访问。
MVME162提供跳线（在J20上），允许
DS1210S连接到VMEbus+5V STDBY引脚或
车载电池。例如，主系统备份源可以是
电池连接到VMEbus+5V STDBY引脚和辅助电源
可以是车载电池。如果系统源发生故障，或板发生故障
从机箱中取出后，车载电池将接管。
MVME162功能描述
MVME162/D2 4-3
4.
注意：为了正确操作板载SRAM，一些跳线
组合必须安装在备用电源上
选择标题。如果其中一个跳线用于选择
电池，电池必须安装在MVME162上
如果保留DS1210的输入，SRAM可能会出现故障
未连接。
SRAM由MCchip控制，访问时间可编程。
请参阅MVME162嵌入式控制器中的MCchip说明
有关更多详细信息，请参阅程序员参考指南。
关于电池
板载SRAM的电源为RAYOVAC FB1225电池，配有：
两个BR1225型锂电池，带插座，便于拆卸和更换。A.
提供小电容器，以便快速更换电池
而没有数据丢失。
电池的寿命非常依赖于的环境温度
板和通电占空比。上提供的锂电池
MVME162应提供至少两年的电路板备份时间
关闭电源，环境温度为40°C。如果电源处于工作状态
周期为50%（电路板一半时间通电），电池寿命为
四年。在较低的环境温度下，备份时间非常长
并且可以接近电池的保质期。
存储电路板时，应断开电池以延长电池寿命
生活这在高环境温度下尤其重要。MVME162
在电池断开的情况下装运（即VMEbus+5V备用
选择为初级和次级电源的电压）。如果你打算
要将电池用作电源，无论是主电源还是辅助电源，它是
安装模块之前，需要重新配置J20上的跳线。参考
要使用SRAM备用电源，请选择第2章中的标题J20作为可用
跳线配置。
电池的电源引线暴露在电路板的焊料侧。
电路板不应放置在导电表面上或存放在
导电袋，除非电池被移除。

R911317453 MSK100C-0300-NN-SN-AG0-NNNN

R911317453 MSK100C-0300-NN-SN-AG0-NNNN

nctional Description
4-2 User’s Manual
4
MC68040/MC68LC040 MPU
The MVME162 is equipped with an MC68040 or MC68LC040 microprocessor.
The MC68040/MC68LC040 have on-chip instruction and data caches; the
MC68040 also provides a floating-point coprocessor. Refer to the M68040
Microprocessor User’s Manual for more information.
EPROM and Flash Memory
The MVME162 implementation includes four 2-Mbit Flash devices organized
in a 256Kbit x 8 configuration. The EPROM location is a standard JEDEC 32-
pin PLCC capable of 4 Mbit densities (128 Kbit x 8; 256 Kbit X 8; 512 Kbit x 8;
1 Mbit x8) organized as a 512Kbit x 8 device. A jumper setting (GPIO3, pins 9-
10 on J22) allows reset code to be fetched either from Flash memory (GPIO3
installed) or from the EPROM (GPIO3 removed).
SRAM
The MVME162 provides 512KB of 32-bit-wide onboard static RAM in a single
non-interleaved architecture with onboard battery backup. The worst case
elapsed time for battery protection is 200 days. Specifics on SRAM
performance can be found in the section on the SRAM Memory Controller in
the MCchip Programming Model in the MVME162 Embedded Controller
Programmer’s Reference Guide. The SRAM arrays are not parity protected.
The battery backup function for the MVME162 SRAM is provided by a Dallas
DS1210S device that supports primary and secondary power sources. In the
event of a main board power failure, the DS1210S checks power sources and
switches to the source with the higher voltage.
If the voltage of the backup source is lower than two volts, the DS1210S blocks
the second memory cycle; this allows software to provide an early warning to
avoid data loss. Because the second access may be blocked during a power
failure, software should do at least two accesses before relying on the data.
The MVME162 provides jumpers (on J20) that allow either power source of the
DS1210S to be connected to the VMEbus +5V STDBY pin or to one cell of the
onboard battery. For example, the primary system backup source may be a
battery connected to the VMEbus +5V STDBY pin and the secondary source
may be the onboard battery. If the system source should fail or the board is
removed from the chassis, the onboard battery takes over.
MVME162 Functional Description
MVME162/D2 4-3
4
Caution For proper operation of the onboard SRAM, some jumper
combination must be installed on the Backup Power Source
Select Header. If one of the jumpers is used to select the
battery, the battery must be installed on the MVME162. The
SRAM may malfunction if inputs to the DS1210S are left
unconnected.
The SRAM is controlled by the MCchip, and the access time is programmable.
Refer to the MCchip description in the MVME162 Embedded Controller
Programmer’s Reference Guide for more detail.
About the Battery
The power source for the onboard SRAM is a RAYOVAC FB1225 battery with
two BR1225 type lithium cells, socketed for easy removal and replacement. A
small capacitor is provided so that the batteries can be quickly replaced
without data loss.
The lifetime of the battery is very dependent on the ambient temperature of the
board and the power-on duty cycle. The lithium battery supplied on the
MVME162 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 significantly
longer and may approach the shelf life of the battery.
When a board is stored, the battery should be disconnected to prolong battery
life. This is especially important at high ambient temperatures. The MVME162
is shipped with the battery 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 J20 before installing the module. Refer
to SRAM Backup Power Source Select Header J20 in Chapter 2 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.