【选型】SRAM芯片AS6C62256可PTP兼容IS62C256AL用于工业显示器中,多个参数基本一致
随着数字化时代的进展,工业显示器的需求日益趋增,工业显示器的图像显示需要用到SRAM,因此SRAM的需求也与日俱增,本文介绍2款256K的SRAM型号,将ALLIANCE的AS6C62256与IS62C256AL参数对比,作为一个参考供工程师选型。
256K容量的SRAM中Alliance的AS6C62256与ISSI品牌的IS62C256AL参数对比如下图1所示:
图1 Alliance的AS6C62256与ISSI品牌的IS62C256AL参数对比
从上述参数可知:
Alliance的AS6C62256的参数基本与ISSI品牌的IS62C256AL一致,相对来说Alliance的AS6C62256的工作电压范围更广,有利于供电比较复杂的车载电子环境.AS6C62256这颗主打低功耗,在相同工作情况下,功耗会更低一些,不过会相对牺牲些读写速率。
ALLIANCE的AS6C62256与ISSI品牌的IS62C256AL的PIN脚框图如下图2所示:
图2 PIN脚 框图对比
如上图所示,两者PIN脚是pin to pin的,可以替换使用。
综上所述,Alliance的AS6C62256的参数基本与ISSI品牌的IS62C256AL一致,在IS62C256AL缺货的情况下,可以使用ALLIANCE的AS6C62256进行替代备选。
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ALLIANCE 存储器选型表
提供存储器、存储芯片、SRAM、SDRAM、DDR1、DDR2、DDR3、DDR4选型,VCC(V):0.6-5,MSL LEVEL:0-5,CLOCK(MHz):133-1866,可支持商业级/工业级/汽车级。
产品型号
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品类
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Product Family
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DENSITY
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ORGANISATION
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VCC(V)
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TEMPERATURE RANGE(°C)
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PACKAGE
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MSL LEVEL
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AS7C164A-15JCN
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存储器
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FAST-Asynch
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64K Fast
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8K x 8
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5V
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Commercial (0 ~ 70°C)
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28pin SOJ(300mil)
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3
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