半导体存储器(semi-conductor memory)是一种以半导体电路作为存储媒体的存储器,内存储器就是由称为存储器芯片的半导体集成电路组成。 存储器主要用于存储系统程序、用户程序及工作数据。存放系统软件的存储器称为系统程序存储器,存放应用软件的存储器为用户程序存储器,存放工作数据的存储器称为数据存储器,常用的存储器有RAM,EPROM和EEPROM,RAM是一种可进行读写操作的随机存储器存放用户程序,生成用户数据区,存放在RAM中的用户程序可方便地修改,RAM存储器是一种高密度,低功耗,性价比高的半导体存储器,可用锂电池做备用电源,掉电时,可有效的保存存储的信息EPROM EEPROM都是只读存储器,用这些类型存储器固化系统管理程序和应用程序。 Part Number Density Organization(bit) Access time(ns) Supply voltage(V) Operating temperature (°C) PackageType R1RW0416DSB-2SR 4Mb x 16 12 3.0 to 3.6 0°C to 70°C TSOPII(44) R1RW0416DSB-2PR 4Mb x 16 12 3.0 to 3.6 0°C to 70°C TSOPII(44) R1RW0416DSB-2PI 4Mb x 16 12 3.0 to 3.6 -40°C to 85°C TSOPII(44) R1RW0416DSB-2LR 4Mb x 16 12 3.0 to 3.6 0 °Cto 70°C TSOPII(44) R1RW0416DSB-0PR 4Mb x 16 10 3.0 to 3.6 0 °Cto 70°C TSOPII(44) R1RW0416DSB-0PI 4Mb x 16 10 3.0 to 3.6 -40°C to 85°C TSOPII(44) R1RW0416DGE-2SR 4Mb x 16 12 3.0 to 3.6 0°C to 70°C SOJ(44) R1RW0416DGE-2PR 4Mb x 16 12 3.0 to 3.6 0°C to 70°C SOJ(44) R1RW0416DGE-2PI 4Mb x 16 12 3.0 to 3.6 -40°C to 85°C SOJ(44) R1RW0416DGE-2LR 4Mb x 16 12 3.0 to 3.6 0 °Cto 70°C SOJ(44) R1RW0408DGE-2PR 4Mb x 8 12 3.0 to 3.6 0 °Cto 70°C SOJ(36) R1RW0408DGE-2PI 4Mb x 8 12 3.0 to 3.6 -40°C to 85°C SOJ(36) R1RW0408DGE-2LR 4Mb x 8 12 3.0 to 3.6 0 °Cto 70°C SOJ(36) R1RW0408DGE-0PR 4Mb x 8 10 3.0 to 3.6 0 °Cto 70°C SOJ(36) R1RP0416DSB-2SR 4Mb x 16 12 4.5 to 5.5 0 °Cto 70°C TSOPII(44) R1RP0416DSB-2PR 4Mb x 16 12 4.5 to 5.5 0 °Cto 70°C TSOPII(44) R1RP0416DSB-2PI 4Mb x 16 12 4.5 to 5.5 -40°C to 85°C TSOPII(44) R1RP0416DSB-2LR 4Mb x 16 12 4.5 to 5.5 0 °Cto 70°C TSOPII(44) R1RP0416DSB-0PR 4Mb x 16 10 4.5 to 5.5 0 °Cto 70°C TSOPII(44) R1RP0416DSB-0PI 4Mb x 16 10 4.5 to 5.5 -40°C to 85°C TSOPII(44) R1RP0416DGE-2SR 4Mb x 16 12 4.5 to 5.5 0 °Cto 70°C SOJ(44) R1RP0416DGE-2PR 4Mb x 16 12 4.5 to 5.5 0 °Cto 70°C SOJ(44) R1RP0416DGE-2PI 4Mb x 16 12 4.5 to 5.5 -40°C to 85°C SOJ(44) R1RP0416DGE-2LR 4Mb x 16 12 4.5 to 5.5 0 °Cto 70°C SOJ(44) R1RP0408DGE-2PR 4Mb x 8 12 4.5 to 5.5 0 °Cto 70°C SOJ(36) R1RP0408DGE-2PI 4Mb x 8 12 4.5 to 5.5 -40°C to 85°C SOJ(36) R1RP0408DGE-2LR 4Mb x 8 12 4.5 to 5.5 0 °Cto 70°C SOJ(36) R1RW0416DGE-0PR 4Mb x 16 10 3.0 to 3.6 0 °Cto 70°C SOJ(44) R1RW0416DGE-0PI 4Mb x 16 10 3.0 to 3.6 -40°C to 85°C SOJ(44) R1RW0408DGE-0PI 4Mb x 8 10 3.0 to 3.6 -40°C to 85°C SOJ(36) R1RP0416DGE-0PI 4Mb x 16 10 4.5 to 5.5 -40°C to 85°C SOJ(44)