Quick Reference Guide
ARC-21W33 Quick Reference Guide 27
2.6.9
Battery connector (JBAT1)
Signal
PIN
+RTCBATT
1
GND
2
2.6.10
LCD backlight brightness adjustment (JVR_BTN1)
PIN
Signal
Note
1-2
BLK_VR_MOD
VR must select 10K/1%
3-4
BLK_BRI_UP
Low pulse button for
backlight brighter
5-6
BLK_BRI_DN
Low pulse button for
backlight dim