Nokia 5110 PIN-Out

Pin-Outs- Bottom view, keyboard up, counting from the left

V V 1 2 3 4 5 6 V
(o) | | [= = = = = =] | |
7 8 9 10 11 12

1 - VIN CHARGER INPUT VOLTAGE 8.4V 0.8A
2 - CHRG CTRL CHARGER CONTROL PWM 32Khz
3 - XMIC MIC INPUT 60mV - 1V
4 - SGND SIGNAL GROUND
5 - XEAR EAR OUTPUT 80mV - 1V
6 - MBUS 9600 B/S
7 - FBUS_RX 9.6 - 230.4 KB/S
8 - FBUS_TX 9.6 - 230.4 KB/S
9 - L_GND CHARGER / LOGIC GND