The internal groundresistor limits the reverse battery ground current.
内部接地电阻限制了电池反向接地电流。
2
The float voltage applied to the battery is held to a tight 0.8% tolerance, and charge current is programmable using an external resistor to ground.
浮动电压的电池适用于被裁定为紧缩0.8%宽容和可编程充电电流通过外部电阻到地。
3
The microcontroller's pin connects to ground using pulldown resistor R1 with resistance, typically, of a few hundred kilohms to impress the high-impedance state on the pin.