【选型】兆易创新GD25S512MDYIG媲美华邦W25M512JVEIQ，512Mbit Flash，3.3V

时间： 2019-06-14 来源：世强

技术问答

SPI是一种高速、全双工、同步的通信总线，可以节约芯片管脚，同时为PCB布局节省空间，存储器厂商推出基于SPI接口的serial Flash，用SPI方式进行串行读取数据，减小引脚消耗。

针对512M bit的SPI serial Nor Flash，台湾华邦的W25M512JVEIQ在汽车和工业市场上存在大量应用，考虑到供应链风险，通常需要备选方案。兆易创新作为国内首家成功研发移动高速存储芯片的公司，推出了一款WSON封装的512M bit serial Nor Flash芯片GD25S512MDYIG，可以媲美市场上应用的台湾华邦的serial Flash产品W25M512JVEIQ，以下是两种器件电气性能参数对比：

表1 GD25S512MDYIG和W25M512JVEIQ参数对比

从上表中可以看出，两个器件存储容量、工作温度、时钟频率、工作电压和封装都基本一致，但兆易创新的GD25S512MDYIG待机功耗低至2μA，可以降低整机功耗，两者PIN脚定义完全一致，以下是两者封装和PIN脚定义对比。

图1 GD25S512MDYIG（左）和W25M512JVEIQ（右）封装对比

图 2 GD25S512MDYIG PIN脚定义

图 3 W25M512JVEIQ PIN脚定义

从以上对比中可得GD25S512MDYIG与W25M512JVEIQ两个器件封装和PIN脚定义完全一致，因此兆易创新的serial Flash芯片GD25S512MDYIG可以PIN-PIN兼容华邦W25M512JVEIQ，无需改动任何电路。

除了上述PIN-PIN兼容方面的优势，兆易创新GD25Q16CSIG还具有现货供应、快速样品支持、低价格的优势，是需要汽车、工控行业大容量Nor Flash应用的最佳选择。

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