For Nokia 5110 LCD Module
Backlight power supply voltage: highest 3.3V
Backlight: Blue
Positioning holes corners , while providing two rows wiring ports, arranged as follows:
1RST--------- reset
2CE------------chip selection
3DC-----------data/commands choice
4DIN-----------serial data line
5CLK------------serial Clock Speed
63.3V------------VCC
7LIGHT--------- backlight control terminal
8GND-----------power negative