 9 pin Nokia 5110 cellphone special connector at the cellular phone | | Pin
| Description |
| 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 |
Source:www.pinouts.ru
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