GVC736CE101 3BHE039204P201工控模块系统备件
电池的寿命非常依赖于电路板的环境温度和通电占空比。MVME162FX嵌入式控制器上提供的锂电池应在电路板断电且环境温度为40°C的情况下提供至少两年的备份时间。如果通电占空比为50%（电路板一半时间通电），则电池寿命为四年。在较低的环境温度下，备份时间大大延长，并可能接近电池的保质期。存储板时，应断开电池以延长电池寿命。这在高环境温度下尤为重要。控制器出厂时电池已断开（即VMEbus+5V备用电压被选为主电源和辅助电源）。如果您打算将电池用作电源（无论是主电源还是辅助电源），在安装模块之前，有必要重新配置J20上的跳线。有关可用跳线配置，请参阅第2章中的SRAM备用电源选择头J20。电池的电源线暴露在电路板的焊接侧，因此，除非移除电池，否则电路板不应放置在导电表面或存储在导电袋中！警告锂电池含有易燃材料，如锂和有机溶剂。如果锂电池被不当使用或处理不当，它们可能会爆裂，功能说明http://www.mcg.mot.com/literature1-17 1点燃，可能导致受伤和/或火灾。处理锂电池时，请仔细遵守以下预防措施，以防止发生事故。❏ 不要短路。❏ 不要拆卸、变形或施加过大压力。❏ 不要加热或焚烧。❏ 不要将焊料直接涂抹在端子上。❏ 不要将不同型号的电池混合在一起。❏ 不要将新旧电池混合在一起。❏ 不要充电。❏ 始终检查极性是否正确。不要反转极性。要从模块中取出电池，请小心地将电池从插座中拔出。安装新电池之前，请确保电池针脚清洁。记下电池极性，然后将电池压入插座。注意，当电池在插座中时，不需要焊接。EPROM和闪存MVME162FX嵌入式控制器的设计包含1MB闪存（一个8Mbit闪存设备，组织为1M x 8）。有关闪存编程的更多信息，请参阅附录F中列出的Intel文档。闪存写入启用由MC2芯片中闪存访问时间控制寄存器中的一位控制。有关更多信息，请参阅《MVME162FX嵌入式控制器程序员参考指南》。EPROM位置是一个标准JEDEC 32引脚PLCC，能够以512KB x 8器件的形式组织4 Mbit密度。根据跳线设置（GPI3，J22上的引脚9-10），可以从闪存（已安装GPI3）或EPROM（已移除GPI3）获取MC68xx040重置代码。1-18计算机组文献中心网站板级硬件说明1请注意，订购的MVME162FX型号没有VMEbus接口，但随附闪存空白（工厂使用VMEbus对闪存进行调试代码编程）。要使用162Bug包MVME162Bug，请确保为EPROM内存映射配置了跳线头J22。更多详情请参阅第3章和第4章。电池备份RAM和时钟MVME162FX嵌入式控制器包含MK48T08 RAM和时钟芯片。该芯片在一个28引脚封装中提供了一个时钟、振荡器、晶体、电源故障检测、8KB RAM和电池。时钟以BCD 24小时格式提供秒、分钟、小时、日、日期、月和年的信息。28天、29天（闰年）和30天的月份会自动进行更正。时钟不会产生中断。时钟芯片是一个8位器件；然而，MC2芯片提供的接口支持对MK48T08的8位、16位和32位访问。有关编程和电池寿命信息的更多信息，请参阅《MVME162FX嵌入式控制器程序员参考指南》中的MC2芯片说明和MK48T08数据表。VMEbus接口和VMEcchip2可选的VMEchip2提供本地总线到VMEbus的接口和VMEbus到本地总线的接口。VMEchip2还可以提供VMEbus系统控制器功能。有关详细编程信息，请参阅《MVME162FX嵌入式控制器程序员参考指南》中的VMEchip2说明。注意，未使用VMEchip2中的ABORT开关逻辑。位于$FFF40088位7-0的VMEchip2的GPI输入未被使用。ABORT开关中断集成在MC2芯片ASIC的$FFF42043位置。GPI输入集成到MC2芯片中
The life 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 MVME162FX Embedded Controller 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 greatly extended 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 controller 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 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, therefore the board should not be placed on a conductive surface or stored in a conductive bag unless the battery is removed. ! Warning Lithium batteries incorporate flammable materials such as lithium and organic solvents. If lithium batteries are mistreated or handled incorrectly, they may burst open and Functional Description http://www.mcg.mot.com/literature 1-17 1 ignite, possibly resulting in injury and/or fire. When handling 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 to terminals. ❏ Do not mix different models of batteries together. ❏ Do not mix new and old batteries together. ❏ Do not charge. ❏ Always check for correct polarity. Do not reverse 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. Note that when the battery is in the socket, no soldering is required. EPROM and Flash The MVME162FX Embedded Controller’s design incorporates 1MB of flash memory (an 8-Mbit flash device organized as a 1M x 8). Refer to the Intel documents listed in Appendix F for additional information on programming flash memory, The flash write enable is controlled by a bit in the Flash Access Time Control Register in the MC2 chip. Refer to the MVME162FX Embedded Controller Programmer’s Reference Guide for additional information. The EPROM location is a standard JEDEC 32-pin PLCC capable of 4 Mbit densities organized as a 512KB x 8 device. Depending on the jumper setting (GPI3, pins 9-10 on J22), the MC68xx040 reset code can be fetched from either the flash (GPI3 installed) or EPROM (GPI3 removed). 1-18 Computer Group Literature Center Web Site Board Level Hardware Description 1 Note that MVME162FX models ordered without the VMEbus interface are shipped with flash memory blank (the factory uses the VMEbus to program the flash memory with debugger code). To use the 162Bug package, MVME162Bug, be sure that jumper header J22 is configured for the EPROM memory map. Refer to Chapters 3 and 4 for further details. Battery Backed Up RAM and Clock The MVME162FX Embedded Controller incorporates the MK48T08 RAM and clock chip. This chip provides a time-of-day clock, oscillator, crystal, power failure detection, 8KB of RAM, and a battery in one 28-pin package. The clock provides information in seconds, minutes, hours, day, date, month, and year in BCD 24-hour format. Corrections for 28- day, 29- day (leap year), and 30-day months are automatically made. No interrupts are generated by the clock. The clock chip is an 8 bit device; however, the interface provided by the MC2 chip supports 8-bit, 16-bit, and 32-bit accesses to the MK48T08. Refer to the MC2 chip description in the MVME162FX Embedded Controller Programmer’s Reference Guide and to the MK48T08 data sheet for additional information on programming and battery life information. VMEbus Interface and VMEchip2 The local bus to VMEbus interface and the VMEbus to local bus interface are provided by the optional VMEchip2. The VMEchip2 can also provide the VMEbus system controller functions. Refer to the VMEchip2 description in the MVME162FX Embedded Controller Programmer’s Reference Guide for detailed programming information. Note that the ABORT switch logic in the VMEchip2 is not used. The GPI inputs to the VMEchip2 which are located at $FFF40088 bits 7-0 are not used. The ABORT switch interrupt is integrated into the MC2 chip ASIC at location $FFF42043. The GPI inputs are integrated into the MC2 chip
