V 1.1 

14 

2016/08/16 

ES277

4000 Counts DMM

1.16. Low Battery Voltage Detection

ES277 provides a voltage detection input (pin 89: LBAT9) for non-3V battery application. When

LBAT9 is less than VRH terminal voltage, the LCD segment of low battery will appear. For 3V battery

application, pull LBAT9 to DGND directly and the same detection will be made when V- is less than

2.3V typ.. When the Low battery status lasts for 10 seconds, the LCD segment of low battery will be

blinking. When the symbol is blinking for 20 seconds, the operation of meter will be inhibited and

LCD panel will show “ Lo.bt”. In this case, it is suggested to replace a new battery immediately. After

“Lo.bt” appears and lasts for 60 seconds, ES277 will enter to auto power off mode.

Low battery test ( 9V battery)

680K

 

270K

 

BAT

LBAT9

 

V‐

AGND

 

0.1u

 

0V

 

9V