User Guide

Table 13 Battery IF electrical characteristics

Description Parameter Max Unit

Operation voltage V

4.23 VDC

Current rating I

0.9 A

Flip qwerty keyboard

Flip side of the QWERTY keyboard is connected to the application processor via separate microcontroller

(COP8).

Engine side of the QWERTY keyboard is connected directly to the application processor pins. There are 6 rows

and 7 coulumns in the engine qwerty key matrix.

Figure 91 Block diagram

Test point Notes

J4400 SDA I2C bidirectional data

J4401 SCL I2C clock

J4402 VBAT Supply voltage for flip module

Test points

There are no testpoints for the engine side qwerty keyboard. There are three testpoints for the I2C interface

between flip module and engine module.

RM-10;RM-24

Nokia Customer Care System Module

Page 9 –18 COMPANY CONFIDENTIAL Issue 1