青青草p2phd高清

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首頁 >> 産品 >>配套類 >>其它 >> IC卡接口電路 AiP2224/ TDA8024

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IC卡接口電路 AiP2224/ TDA8024

産品型号：: AiP2224/ TDA8024

産品名称：: IC卡接口電路

封裝形式：: SOP28

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商品說明

iP2224/ TDA8024是一个为异步3V/5V IC卡设计的完整、高效的模拟接口电路，工作在微控制器与IC卡之间，完成对IC卡的供电、保护和数据传输任务，只需要添加少量的外围器件。

 IC卡接口電路
 3V或5V供电（VDD,GND）
 三个与IC卡C4，C7，C8口相连的有特殊保护的半双工双向缓冲IO口
 独立的DC/DC 转换电路供电（VDDP，PGND）;5V±20%
 为IC卡供电的3V或5V±5%校准电源（VCC，CGND）,适当去耦可达到如下特性：
 VDDP=4~6.5V时，ICC<80mA
 可控的上升和下降时间
 大约120mA的过载检测
 所有与IC卡接触的端口都有热保护和短路保护
 在短路，卡拔出，过热，VDD或者VDDP下降时，自动的由软件或是硬件控制电路的工作或是待机时序
 IC卡端口增强的ESD保护结构（>6KV）
 集成26M的晶振振荡器
 为IC卡提供的最高20MHz的时钟信号（通过CLKDIV1，CLKDIV2选择1,2,4或8倍分频）
 通过RETIN直接对RST进行非反向的控制
 在上电，掉电和上电复位过程中的电源检测电路可以消除尖峰的影响（起始电压由内部电路或外部电阻桥决定）
 在卡插拔过程中未探测信号提供内部去耦机制
 一个状态指示信号

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