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标题: 求教STM8的true open drian I/O端口的问题 [打印本页]

作者: 张衍波    时间: 2015-5-18 17:02
标题: 求教STM8的true open drian I/O端口的问题
STM8的I2C端口手册上的描述如下:

(3) In the open-drain output column, "T" defines a true open-drain I/O (P-buffer, weak pull-up, and protection diode to VDD are not implemented).

问题来了,对这样的端口,能不能施加高于VDD的电压,
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