STC89C52RC Development Board 51 MCU Learning minimum system Core Board CH340
4,69 €
On the P0 port pull-up resistor, if you use the STC89C52 version, P0 port if you do the external output driver, you need to external pull-up resistor, do the general LCD bus such as LCD1602, LCD12864 bus, can be used directly, no external pull-up resistor.
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