標(biāo)題: STC89C52RC單片機(jī)P0口內(nèi)部有上拉電阻嗎? [打印本頁(yè)] 作者: daniellew 時(shí)間: 2019-7-11 20:50 標(biāo)題: STC89C52RC單片機(jī)P0口內(nèi)部有上拉電阻嗎? STC89C52RC 看其規(guī)格書(shū)里面介紹有上拉電阻:請(qǐng)看如下:
Port0 :Port0 is an 8-bit bi-directional I/O port with pull-up resistance.
Except being as GPIO, Port 0 is also the multiplexed low-order address
and data bus during accesses to external program and data memory.