PLCC-44 封裝尺寸圖P-44A
PLCC-44 封裝尺寸圖P-44A...
PLCC-44 封裝尺寸圖P-44A...
SDRAM的原理和時序 SDRAM內存模組與基本結構 我們平時看到的SDRAM都是以模組形式出現,為什么要做成這種形式呢?這首先要接觸到兩個概念:物理Bank與芯片位寬。1、 物理Bank 傳統內存系統為了保證CPU的正常工作,必須一次傳輸完CPU在一個傳輸周期內所需要的數據。而CPU在一個傳輸周期...
The PCA9546A is a quad bidirectional translating switch controlled via the I2C-bus. TheSCL/SDA upstream pair fans out to four downstream pairs, or cha...
The PCA9547 is an octal bidirectional translating multiplexer controlled by the I2C-bus.The SCL/SDA upstream pair fans out to eight downstream pairs, ...
The PCA9548A is an octal bidirectional translating switch controlled via the I2C-bus. TheSCL/SDA upstream pair fans out to eight downstream pairs, or ...