【产品】支持USB 2.0高速模式的USB集线器控制器LSI S2R72A54，具有AEC-Q100认证
EPSON公司推出了一款支持USB 2.0（通用串行总线规格2.0版）高速模式的USB集线器控制器LSI——S2R72A54。通过使用S2R72A54，可以轻松扩展主芯片的USB主机端口，允许将多个USB设备（如手机，音频播放器或ETC设备）连接到汽车导航系统。该芯片符合严格的汽车使用质量要求，并能够在高达105°C的温度下运行。
S2R72A54具有1个上行端口和4个下行端口，支持高速模式, 且内置终端，无需外部电阻。其中上行端口支持HS（480 Mbps）和FS（12 Mbps）和自动检测。下行端口支持HS（480 Mbps），FS（12 Mbps）和LS（1.5 Mbps）。该芯片内置单个事务转换器，具有四个非周期性缓冲区，支持Gang或Individual作为过流控制，采用24 MHz晶振。
S2R72A54的工作电压的典型值为3.3 V，工作电压范围为3.0V至3.6V。该芯片具有宽的工作温度范围-40°C至+ 105°C，有QFP12-48和SQFN6-36两种封装，其封装和引脚定义如图1所示。
a） QFP12-48封装
b）SQFN6-36封装
图1：S2R72A54封装图
S2R72A54的产品特性：
·AEC-Q100认证
·卓越的数据通信特性
·宽温度范围：工作温度范围为-40°C至+ 105°C
·USB规格
·上行端口
·支持HS（480 Mbps）和FS（12 Mbps），并自动检测
·内置终端（无需外部电阻）
·下行端口
·支持HS（480 Mbps），FS（12 Mbps）和LS（1.5 Mbps），全部4个端口
·内置终端（无需外部电阻），全部4个端口
·内置单个事务转换器，具有四个非周期性缓冲区
·支持Gang或Individual作为过流控制
·支持24 MHz晶振（内置振荡电路和反馈电阻）
·电源电压：3.3 V（3.0V至3.6V）
·内置稳压器可产生内部核心电压1.8 V和PLL/OSC电压1.8 V.
·封装：
·QFP12-48（48针，7mm见方，0.5mm间距，1.4mm厚）
·产品编号：S2R72A54F12E3xx
·SQFN6-36（36针，6mm见方，0.5mm间距，1.0mm厚）
·产品编号：S2R72A54F06E3xx
S2R72A54的应用领域：
·汽车电子，如车载导航仪、行车记录仪、ETC、车载充电器等
技术顾问：惠惠
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