User Guide

Name of Connection Connector reference

Display X2400

Earpiece B2101

UI flex connector X2400

AV flex connector X2002

IHF speaker B2102

Camera X1550

Microphone B2100

Vibra M2100

Back-up battery interface electrical characteristics

Table 18 Back-up battery connections

Pin name I/O Connection Notes

L2207,

VBack

-> N2200,

VBack

Back-up battery G2200 is

connected to N2200 via coil

Table 19 Back-up battery electrical characteristics

Description Parameter Min Typ Max Unit

Back-Up

Battery

Voltage

Vback 0 2.5 2.7 V

RM-437; RM-449; RM-450

System Module and User Interface

Page 6 –26 COMPANY CONFIDENTIAL Issue 1