存储器分为两大类,一种称为静态RAM(Static RAM/SRAM),SRAM芯片读取速度非常快,是目前读写较快的存储芯片,价格也相对比较贵,一般在对存储条件比较苛刻的产品上使用,譬如CPU的一级缓冲,二级缓冲,或者工控智能的产品。另一种称为动态RAM(Dynamic RAM/DRAM),DRAM保留数据的时间很短,读取速度也比SRAM芯片慢,不过它还是比任何的ROM都要快,但从价格上来说DRAM相比SRAM要便宜很多,计算机内存条就是DRAM的。 Density Org. Part Number Vcc Speed(ns) Pkg(Pins) 32Mb 2Mx16 IS64WV204816BLL 2.4-3.6V 12 TSOP1(48),BGA(48) 32Mb 2Mx16 IS61WV204816ALL/BLL 1.65-3.6V 10,12 TSOP1(48),BGA(48) 16Mb 2Mx8 IS64WV20488BLL 2.4-3.6V 10 TSOP2(44),BGA(48) 16Mb 2Mx8 IS62WV20488ALL/BLL 1.65-3.6V 25,35 TSOP2(44),BGA(48) 16Mb 2Mx8 IS61WV20488ALL/BLL 1.65-3.6V 8,10,20 TSOP2(44),BGA(48) 16Mb 1Mx16 IS64WV102416DBLL 2.4-3.6V 12 TSOP1(48),BGA(48) 16Mb 1Mx16 IS64WV102416BLL 2.4-3.6V 10 TSOP1(48),BGA(48) 16Mb 1Mx16 IS61WV102416DALL/BLL 2.4~3.6 10 TSOP1(48),BGA(48) 16Mb 1Mx16 IS62WV102416ALL/BLL 1.65-3.6V 25,35 TSOP1(48),BGA(48) 16Mb 1Mx16 IS61WV102416ALL/BLL 1.65-3.6V 8,10,20 TSOP1(48),BGA(48) 16Mb 1Mx16 IS61WV102416EDALL/BLL 2.4~3.6 10 TSOP1(48),BGA(48) 16Mb 512Kx32 IS61WV51232ALL/BLL 1.65-3.6V 8,10,20 BGA(90) 8Mb 1Mx8 IS61WV10248ALL/BLL 1.65-3.6V 8,10,20 TSOP2(44),BGA(48) 8Mb 1Mx8 IS61WV10248EDBLL 2.4-3.6V 8,10,20 TSOP2(44),BGA(48) 8Mb 512Kx16 IS64WV51216EDBLL 2.4-3.6V 10 TSOP2(44),BGA(48) 8Mb 512Kx16 IS61WV51216ALL/BLL 1.65-3.6V 8,10,20 TSOP2(44),BGA(48) 8Mb 512Kx16 IS61WV51216EDALL/BLL 1.65-3.6V 8,10,20 TSOP2(44),BGA(48) 8Mb 256Kx32 IS61WV25632ALL/BLL 1.65-3.6V 8,10,20 BGA(90) 4Mb 512Kx8 IS61C5128AL 5V 10,12 SOJ(36),TSOP2(44) 4Mb 512Kx8 IS61C5128AS 5V 25ns SOP(36),sTSOP1(32),TSOP2(32) 4Mb 512Kx8 IS61WV5128ALL/BLL 1.65-3.6V 8,10,20 SOJ(36),TSOP2(44),BGA(36) 4Mb 512Kx8 IS61WV5128EDBLL 2.4-3.6V 8,10 TSOP2(44),BGA(36) 4Mb 512Kx8 IS64WV5128EDBLL 2.4-3.6V 10 TSOP2(44),BGA(36) 4Mb 256Kx16 IS61C25616AL 5V 10ns SOJ(44),TSOP2(44)