User Guide

Table 18 Charging IF electrical characteristics

Description Parameter Min Max Unit Notes

Vchar V Charge 0 9 V Center pin

Vchar I Charge 0.85 A Center pin

Charge GND 0.85 A

Internal interfaces

Name of Connection Connector reference

ALS V2500

Display X2400

Earpiece B2101

UI connector X2450

Rigid flex connector X2550

IHF speaker B2102

Camera X1550

Microphone B2100

Earpiece B2101

UI connector X4400

Vibra M2100

Back-up battery interface electrical characteristics

Table 19 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 20 Back-up battery electrical characteristics

Description Parameter Min Typ Max Unit

Back-Up

Battery

Voltage

Vback 0 2.5 2.7 V

RM-244

System Module and User Interface

Issue 1 COMPANY CONFIDENTIAL Page 6 –27