可pin to pin替代随机存储器MT48LC4M16A2P，时钟频率最大166MHz，不缺货、不涨价

时间： 2018-07-27 来源：ALLIANCE

技术问答

随机存取存储器（random access memory，RAM）又称作“随机存储器”，是与CPU直接交换数据的内部存储器，它可以随时读写，而且速度很快，通常作为操作系统或其他正在运行中的程序的临时数据存储媒介。在CPU的控制系统中，为了进行数据的存储、运算和扩展存储容量，通常会采用随机存储器DRAM进行数据的存储。

图1 CPU存储控制系统图

本文将介绍ALLIANCE Memory公司新推出的64Mb同步动态随机存取存储器AS4C4M16SA-6TxN，AS4C4M16SA-7TxN，可完美与S公司的MT48LC4M16A2P做替代，其性能参数对照表如下表所示。

图2 芯片AS4C4M16SA-6TxN，AS4C4M16SA-7TxN和MT48LC4M16A2P参数对比图

通过ALLIANCE Memory公司的随机存取存储器AS4C4M16SA-6TxN，AS4C4M16SA-7TxN与S公司的MT48LC4M16A2P的比较可以得出：

1、ALLIANCE Memory公司的随机存取存储器AS4C4M16SA-6TxN，AS4C4M16SA-7TxN的供电电压、内存大小、时钟频率、响应时间与S公司的MT48LC4M16A2P保持一致，说明在同样的供电条件下，两者功率等级相同，可以完全互换使用。

2、ALLIANCE Memory公司的随机存取存储器AS4C4M16SA-6TxN，AS4C4M16SA-7TxN和S公司的MT48LC4M16A2P的使用温度范围相同，两者都可以在-40~+105℃的温度范围内使用，同样的工作环境条件下，两者性能一致，可以完全替代使用。

通过参数对比分析可见ALLIANCE Memory公司的随机存取存储器AS4C4M16SA-6TxN，AS4C4M16SA-7TxN和S公司的MT48LC4M16A2P使用性能和环境条件一致，都可在CPU控制系统中可靠有效的使用。

其次介绍下AS4C4M16SA-6TxN，AS4C4M16SA-7TxN和MT48LC4M16A2P的引脚定义，两者都是54引脚芯片，而且电源引脚与功能引脚完全一致，引脚定义完全兼容。

然后介绍下AS4C4M16SA-6/7TxN的封装尺寸，都包含标准54-pin TSOP II和54-ball FBGA封装，和MT48LC4M16A2P封装对比如下图所示。图中的管脚间距和定义一致，封装尺寸完全兼容。

图3芯片AS4C4M16SA-6TxN，AS4C4M16SA-7TxN和MT48LC4M16A2P封装对比图

通过见ALLIANCE Memory公司的随机存取存储器AS4C4M16SA-6TxN，AS4C4M16SA-7TxN和S公司的MT48LC4M16A2P封装尺寸和性能参数对比，可以看出两者尺寸完全兼容可以互换，而且两者供电和性能完全一致，在CPU控制系统中都可发挥功率器件的优势。

而且市面上存储器缺货、涨价严重，ALLIANCE的存储器不缺货、不涨价。

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全部评论（2）

luosai Lv8. 研究员 2018-10-14

学习了！
微波器件 Lv5. 技术专家 2018-07-27

不错

没有更多评论了

可pin to pin替代随机存储器MT48LC4M16A1，内存大小64Mb，不缺货、不涨价

ALLIANCE Memory公司的随机存取存储器AS4C4M16SA-6TxN、AS4C4M16SA-7TxN和S公司的MT48LC4M16A1封装尺寸和性能参数对比，可以看出两者尺寸完全兼容可以互换，而且两者供电和性能完全一致，在CPU控制系统中都可发挥功率器件的优势。

设计经验发布时间 : 2018-08-13

可pin to pin替代随机存储器MT48LC4M16A2B4，内存大小64Mbit

Alliance Memory公司的随机存取存储器AS4C4M16SA-6/7BxN和S公司的MT48LC4M16A2B4封装尺寸和性能参数对比，可以看出两者尺寸完全兼容可以互换，而且两者供电和性能完全一致，在CPU控制系统中都可发挥功率器件的优势。

设计经验发布时间 : 2018-07-18

可pin to pin替代随机存储器MT46V8M16P，时钟频率最大200MHz，不缺货、不涨价

ALLIANCE Memory公司的随机存取存储器AS4C8M16D1A-5TxN的供电电压、内存大小、温度范围与MT46V8M16P参数完全一致，说明在同样的供电条件和环境使用温度下，两者功率等级相同，内存大小相同，可以完全互换使用。而且市面上存储器严重缺货和涨价，alliance的存储器不缺货、不涨价，且世强备货充足，支持小量快购，提供专业技术支持。

设计经验发布时间 : 2018-08-06

Alliance DRAM/SDRAM/SRAM/eMMC/闪存选型指南

描述- Alliance Memory is pleased to highlight our new product offerings in DRAM, SRAM, FLASH and eMMC in this new 2024 edition of our Product Selection Guide.We continue to be the premier legacy memory supplier offering high quality products, minimal die shrinks and long term support.

型号- AS4C8M16SA-7TXN,AS6C2008A,AS6C62256-55SXN,ASFC64G31T5-51BIN,AS4C8M32MD2A-25BPCN,AS4C64M32MD2A-25BIN,AS5F18G04SND-10LIN,AS1C512K16P-70BIN,AS4C8M32MSB-6BIN,AS7C38096B-10BIN,ASFC32G31T3-51BIN,AS29CF160B-55TIN,AS4C16M16SA-6TXN,AS7C31025C-12JIN,AS7C31024B-XXTCN,M29F160FT55N3E2,AS4C64M16MD2A-25BIN,AS4C32M16MSB-6BIN,M29F800FT55N3E2,AS25F1128MQ-70WIN,AS7C1024B-XXJCN,AS5F34G04SNDB-08LIN,AS29CF800T-55TIN,AS4C8M16SA-6BXN,AS4C4M16SA-6TXN,AS9F38G08SA-25BIN,N25Q064A13ESFA0F,AS25F364MQ-10WIN,AS9F31G08SA-25BIN,AS4C32M8D1-5TXN,AS4C64M4SA-6 TXN,AS4C256M16D4-83BXN,AS7C31025B-XXJIN,AS4C8M16SA-6 TXN,AS1C1M16P-70BIN,AS4C8M16SA-7 BXN,AS25F34MD-10S1IN,AS6C6416-55TIN,AS4C128M8D2A-25BXN,AS6C2008A-55TIN,AS4C2M32S-7BXN,AS4C512M16D3LC-12BXN,AS4C2M32SA-7 TXN,AS7C1026B-XXTIN,AS7C325632-10BIN,AS6C2016-55ZIN,AS4C16M16SA-7TXN,AS1C1M16PL-70BIN,N25Q064A13EF8H0E,AS6C4016B-45BIN,AS4C512M8D4A-75BXN,AS4C512M16D4A-62BXN,AS4C1G32MD4V-046BIN,AS7C34096B-10BIN,AS4C4M16SA-7TXN,AS6C1008-55PCN,AS7C164A-15PXN,AS1C8M16PL-70BIN,AS6C1008-55SIN,AS4C256M16MD4V-062BAN,N25Q032A13ESCA0F,AS7C34098B,ASFC4G31M-51BIN,AS5F32G04SNDB-08LIN,AS4C4M16SA-6BXN,AS7C34098A,N25Q064A13EF640E,AS7C38098A-10BIN,AS7C3256A-XXTIN,AS4C32M16D3-12BXN,M45PE80-VMP6G,AS4C8M16SA-6TXN,AS4C32M16D3L-12BXN,AS7C1026B-XXTCN,AS4C64M16D2B-25BCN,AS4C128M32MD2A-25BIN,AS7C4098A-XXJXN,AS4C512M16MD4V-053BIN,AS7C256A-XXTIN,AS4C1G8D3LA-10BXN,AS4C2M32S-6BXN,AS4C8M32S-6TXN,AS4C256M16D3C-93BXN,AS4C128M16MD2A-25BIN,AS7C4096A-XXTXN,AS4C64M4SA-7 TXN,AS4C32M16SB-7 TXN,AS4C512M8D4-83BXN,AS4C16M16MSA-6BIN,AS6C8016B,AS6C1008-55TIN,AS4C4M32SA-6 TXN,AS7C38098A-10TIN,AS4C64M16MD1A-5BIN,A7C351232-10BIN,AS6C8016,AS7C34096A,AS9F14G08SA-45BIN,AS7C34096B,AS7C34096B-10TIN,AS6C1616B-45BIN,AS4C2M32SA-6 TXN,AS4C4M16SA-7 TXN,AS4C16M16SA-7 TXN,AS6C1616-55TIN,AS7C316098A,AS7C316098B,AS4C16M16MD1-6BCN,AS4C256M32MD4-062BAN,AS6C1016-55BIN,AS29CF040-55CCIN,AS6C4008-55SIN,AS4C512M8D3LC-12BXN,AS6C4008-55PCN,AS6C1616B-55BIN,AS4C8M32SA-6 BXN,AS7C316096B-10TIN,AS4C128M8D3B-12BXN,AS5F31G04SND-08LIN,ASFC16G31M-51BIN,AS4C32M16D1A-5TXN,AS4C128M16MD4V-062BAN,AS6C4008-70SAN,AS6C8008B-45BIN,AS4C32M16SB-7TXN,AS7C31024B-XXTJCN,AS4C8M32MD2A-25BCN,AS7C32098A-XXTXN,AS25F304MD-10S1IN,AS7C3256A,AS25F1128MQ-70SIN,AS6C8016B-55ZIN,AS6C1608B-45BIN,M45PE16-VMW6TG,AS6C1016,AS6C4008-55BIN,AS7C351232,AS7C316096A-10TIN,AS4C8M16MSB-6BIN,M45PE20-VMN6P,AS4C256M16D3C-93BCN,AS4C16M32SB-6BXN,AS7C38096A-10TIN,AS4C32M16SB-6 TXN,AS4C64M16D1-6TXN,AS6CE4016B-45BIN,AS6C2016,AS6C1616B-45TIN,AS7C256B-XXPIN,AS7C1024B-XXJIN,AS7C34098A-XXTXN,AS7C1025B-XXJCN,AS4C256M16MD4-062BAN,AS4C16M16SB-6TXN,AS6C62256-55STXN,AS4C8M16SB-6TIN,AS7C34096A-XXJXN,AS4C256M16D4A-62BXN,AS6C8008-55ZIN,AS6C2008,AS6C4008-55STIN,AS6C2008-55TIN,AS4C16M16MSB-6BIN,M29F800FB5AN6F2,AS7C316096B-10BIN,AS4C8M16SA-7BXN,AS7C31026B-XXJCN,AS7C31025B-XXJCN,AS4C32M8SA-6TXN,AS7C32098A,AS4C64M32MD1-5BXN,AS7C38096A-10BIN,AS4C1G16D4-062BCN,AS4C1G8D4A-62BXN,AS6C1616B-55TIN,AS6C2008-55STIN,AS4C4M32S-7BXN,AS4C4M32D1A-5BXN,AS4C128M16D2-25BXN,AS6C8016B-45ZIN,AS4C4M32SA-6TXN,AS25F316MQ-10S1IN,AS7C32096A,AS6C1008-55PIN,AS4C16M16SB-7TXN,M45PE80-VMP6TG,AS4C4M32S-6BXN,AS4C4M16SA-5TXN,M29F400FT5AN6E2,AS4C32M16MD1A-5BCN,AS4C64M16D1A-6BIN,AS7C1026B,AS4C512M16D4A-62BAN,AS6C1008,AS7C513B,AS4C128M16D3C-93BCN,M29F800FB5AN6E2,AS6C6416-55BIN,AS4C512M32MD4V-046BIN,AS7C31025B-XXTJCN,AS9F14G08SA-45BAN,AS5F14G04SND-10LIN,AS6C3216A,AS7C1025B,AS9F34G08SA-25BIN,AS7C316096C-10TIN,N25Q032A13ESFA0F,AS4C32M8SA-7TXN,AS4C32M16SC-7TIN,AS4C16M32SC-7TIN,AS4C32M8SA-6 TXN,AS4C2M32SA-6TXN,AS6C6264-55SCN,AS4C32M16D1-5BXN,AS4C8M32SA-7BXN,AS7C1024B,AS7C34098B-10TIN,AS4C32M16D2C-25BXN,AS4C16M16D1-5BXN,AS7C31026B-XXTCN,AS4C4M32SA-7TXN,AS6C4016,AS7C3256A-XXJIN,AS9F18G08SA-45BAN,AS9F32G08SA-25BIN,AS7C256A-XXJIN,AS7C1026B-XXJCN,AS4C1M16S-7TXN,AS4C32M32MD1A-5BIN,AS7C38096B,AS4C64M4SA-7TXN,N25Q064A13EF8A0E,N25Q064A13EF8A0F,AS6C4008,AS4C64M8SC-7TIN,AS7C38096A,AS4C8M16D1A-5TXN,AS4C8M16D1-5BXN,AS4C256M8D2A-25BCN,AS7C4098A-XXTXN,AS5F32G04SNDA-08LIN,AS5F34G04SNDA-08LIN,AS6C1616B,AS4C16M32MD1-5BXN,AS4C1M16S-6TXN,AS4C512M16D3LA-10BXN,AS4C64M4SA-6TXN,AS4C8M16MSA-6BIN,AS6C2016-55BIN,M29F400FB55N3E2,AS4C8M32S-6 TXN,AS6C4016B-45ZIN,AS1C512K16PL-70BIN,AS7C316096C-10BIN,M29F400FB55N3F2,AS4C8M32SA-7 BXN,AS7C3513B-XXTCN,AS7C513B-XXTCN,AS4C1G8D4-75BXN,AS6C1008-55STIN,AS7C34098A-12JCNTR,AS4C512M8D3LC-10BAN,AS7C38098A,AS7C34098B-10BIN,M29F160FB5AN6F2,AS29CF800B-55TIN,AS6C2008-55BIN,AS62V256-70SIN,AS7C31024B-XXJCN,AS6C8016-55TIN,AS4C4M16SB-6TIN,AS4C32M8SA-7 TXN,AS4C16M32MSA-6BIN,AS6C1608B-45TIN,AS4C512M16D4-75BXN,AS6C4016B,AS6C8008-55BIN,AS6C6416,AS7C1025B-XXJIN,AS4C2M32SA-7TXN,AS4C8M32SA-6BXN,AS7C1024B-XXTCN,AS7C4096A-XXJXN,AS4C32M16D1-5TXN,AS7C316098A-10TIN,AS4C16M32MSB-6BIN,AS6C1616C-45TIN,AS5F32G04MND-08LIN,AS6C2008-55SIN,AS7C316096A,AS7C316096B,AS6C1608B,AS7C1024B-XXTJCN,AS6C6264-55SIN,AS4C8M32S-7 TXN,AS7C4096A,AS6C6264-55PCN,AS4C32M16D2A-25BXN,AS4C256M32MD4V-062BAN,AS4C256M16D4A-75BXN,AS7C316096C,N25Q032A13EF640F,AS1C2M16P-70BIN,AS4C64M8D3L-12BXN,N25Q064A11ESEA0F,AS7C3256A-XXJCN,AS7

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