不可靠。在5V VDD，IITS逻辑“1”输出电平将过度驱动3.3V设备，如果它不具有5V容错输入，并且来自3.3V设备的逻辑“1”可能不满足其最小逻辑“1”输入阈值。除非你想在所有线路上使用电平转换器，你需要配置MC2200为3.3V自供电的操作，即TIE VDD到VUSB，并且从你的工作3…3V电源供电，或者如果你真的需要它是总线供电，从USB VBUS供电的3.3V LDO供电。
以上来自于百度翻译
以下为原文
Not reliably. At 5V Vdd, iIts logic '1' output level will over-drive the 3.3V device if that doesn't have 5V tolerant inputs, and logic '1' from the 3.3V device may not meet its minimum logic '1' input threshold. Unless you want to use level converters on all lines, you need to configure the MCP2200 for 3.3V self-powered operation i.e. tie Vdd to Vu***, and power both from your exernal 3..3V supply or if you *REALLY* need it to be bus powered, from a 3.3V LDO powered from USB Vbus
不可靠。在5V VDD，IITS逻辑“1”输出电平将过度驱动3.3V设备，如果它不具有5V容错输入，并且来自3.3V设备的逻辑“1”可能不满足其最小逻辑“1”输入阈值。除非你想在所有线路上使用电平转换器，你需要配置MC2200为3.3V自供电的操作，即TIE VDD到VUSB，并且从你的工作3…3V电源供电，或者如果你真的需要它是总线供电，从USB VBUS供电的3.3V LDO供电。
以上来自于百度翻译
以下为原文
Not reliably. At 5V Vdd, iIts logic '1' output level will over-drive the 3.3V device if that doesn't have 5V tolerant inputs, and logic '1' from the 3.3V device may not meet its minimum logic '1' input threshold. Unless you want to use level converters on all lines, you need to configure the MCP2200 for 3.3V self-powered operation i.e. tie Vdd to Vu***, and power both from your exernal 3..3V supply or if you *REALLY* need it to be bus powered, from a 3.3V LDO powered from USB Vbus
举报
举报
