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2383538_zh-CN
2383538_zh-CN
你好，
这是阿鲁穆甘。请问I2C线路的最大电压是多少？我应该考虑 0.7V @1mA 还是 3mA
谢谢！
阿鲁穆甘
I2C 线路的 VOL/VOH 电平取决于焊盘供电轨和所选引脚配置的相应电气规格。LPI2C 焊盘可以由 VDD_HV_A 或 VDD_HV_B 供电，具体取决于引脚复用和焊盘分配，因此应该使用设备 IOMUX 信息进行验证。
数据手册直接在 GPIO 直流电气特性表中定义了输入阈值 (VIH/VIL)。然而，VOH/VOL 通常通过输出驱动电流条件（如 IOH 和 IOL）间接定义。
实际上，建议采用与所选焊盘配置的相应 IOH/IOL 参数相关的 VOH/VOL 条件，而不是假设特定的电流值 (mA)。只有当数据手册中明确定义了该电气特性所需的电流时，才能使用该电流。
BR，VaneB
我是否应该考虑 IOL -1mA /3mA /8mA 相同的 VOL？我需要这个数字来进行WCA计算。
你好，
您在表 27 的数据表中使用的是哪个符号（例如：IOL_33_S)？
此致，
约翰
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