ALSTOM NRD108031 TRVC070999000底部數(shù)字量控制板卡
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中文資料：
可編程EPROM功能? 地圖解碼器? 訪問時(shí)間? 當(dāng)可在地址0訪問靜態(tài)RAM時(shí)，ALSTOM NRD108031 TRVC070999000包括128KB的32位寬100 ns靜態(tài)RAM（SRAM），它：? 支持8位、16位和32位范圍的訪問。? 允許調(diào)試器在沒有DRAM夾層的情況下運(yùn)行和執(zhí)行有限的診斷。? 由VMEchip2控制；訪問時(shí)間是可編程的。
可選的SRAM電池備份在ALSTOM NRD108031 TRVC070999000上可以選擇SRAM電池備用，但只能作為工廠制造，也只能根據(jù)特殊要求。（有關(guān)詳細(xì)信息，請聯(lián)系您當(dāng)?shù)氐哪ν辛_拉銷售辦事處）。電池備份功能由Dallas DS1210S非易失性控制器芯片和RAYOVAC FB1225電池提供，支持主電源和輔助電源。
車載電源為RAYOVAC FB1225電池，該電池有兩個(gè)BR1225型鋰電池，并帶有插座，便于拆卸和更換。提供了一個(gè)小電容器，以便在沒有數(shù)據(jù)丟失的情況下快速更換電池（即，必須在30秒內(nèi)更換電池）。
英文資料：
Programmable EPROM Features ? Map decoder ? Access time ? When accessible at address 0 Static RAM The ALSTOM NRD108031 TRVC070999000 includes 128KB of 32-bit wide 100 ns static RAM (SRAM), which: ? Supports 8-, 16-, and 32-bit wide accesses. ? Allows debugger operation and execution of limited diagnostics without the DRAM mezzanine. ? Is controlled by the VMEchip2; the access time is programmable.
Optional SRAM Battery Backup SRAM battery backup is optionally available on the ALSTOM NRD108031 TRVC070999000, but only as a factory build and only by special request. (Contact your local Motorola sales office for details). The battery backup function, provided by a Dallas DS1210S nonvolatile controller chip and a RAYOVAC FB1225 battery, supports primary and secondary power sources.
The onboard power source is a RAYOVAC FB1225 battery which has two BR1225-type lithium cells and is socketed for easy removal and replacement. A small capacitor is provided to allow the battery to be quickly replaced without data loss (i.e., the battery must be replaced within 30 seconds).
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