Avalue EPI-QM87R - Manual (Page 24)

EPI-QM87R/ EPI-QM87
24 EPI-QM87R/ EPI-QM87 User ’s Manual
2.4.5 LCD Backlight brightness adjustment (JVR)
* Default
PWM mode*
DC Mode
2.4.6 Battery connector (BAT)
Signal PIN
+3.3V 1
GND 2