Nokia 252 Schematics 4uif
Programmes After Market Services
NHA–3 Series Transceivers
Chapter 4
Uif Module
Issue 2 06/98
NHA–3
Uif Module
Technical Documentation
CONTENTS
Introduction 4 – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Summary 4 – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Submodules 4 – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Specifications 4 – 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External Signals and Connections 4 – 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal Signals and Connections 4 – 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Description 4 – 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Buzzer Driving Circuit 4 – 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Earpiece Driving Circuit 4 – 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display Interface 4 – 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Keypad interface circuitry 4 – 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessory Interface 4 – 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LED Driving Circuits 4 – 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessory Interface Components 4 – 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ESD Protection 4 – 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Lists 4 – 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Figures
Figure 1. UI Module Block Diagram 4 – 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2. System Connector Pinout 4 – 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Version 10
Figure 3 UIF Circuit Diagram 4–A1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4 Keypad Circuit Diagram 4–A2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5 Component Layouts 4–A3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Version 11
Page No
Figure 6 UIF Circuit Diagram 4–A4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7 Keypad Circuit Diagram 4–A5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 8 Component Layouts 4–A6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note: In printed manuals all A3 drawings are located at the back of the binder
Page 4 – 2
Issue 2 06/98
PAMS
NHA–3
Technical Documentation
Introduction
Technical Summary
H700 User interface module consists of the following parts:–
Display with driving IC;
Backlighting circuits;
Earpiece driver circuit;
Buzzer driver circuit;
Keypad contacts and circuitry;
Accessory interface circuits;
Protection components on charger input.
List of Submodules
Table 4. List of Submodules
Name of submodule Type code Material
code
CUI1+ display module 4850025
Uif Module
Notes
Issue 2 06/98
Page 4 – 3
NHA–3
Uif Module
Technical Specifications
PAMS
Technical Documentation
LCDCLK
LCDRstX
LCDENX
LCDDC_Col0
LCDSDA_Col1
LCDSDCLK_Col3
Col2
Row(0:4)
PwrkeyX
Light0
Light1
VCH
ChrgCtrl
ReqA
MBUS
HEAR
Board to Board Connector
XMic
EARP
IntEarEn
BuzzPWM
MIC
LCDCLK
Reset
LCDENX
LCDDC
LCDSDA
LCDSDCLK
System Connector
& Charger Socket
VCH
ChrgCtrl
ReqA
MBUS
HEAR
XMic
UI Display
Col3
Col2
Col1
Col0
Audio Circuits
EARP
IntEarEn
BuzzPWM
MIC
Row1
Row2
Row0
Row3
Backlights
Internal
Keypad
PwrkeyX
Row4
BSI
BTEMP
VBATT
GND
Page 4 – 4
Battery
Connections
BSI
BTEMP
VBATT
GND
Figure 1. UI Module Block Diagram
Issue 2 06/98
PAMS
NHA–3
Technical Documentation
External Signals and Connections
Table 5. List of Connectors
Connector Name Code Notes Specifications / Ratings
System Connector 5469041 Includes recess with spring
contacts for Mic & dc jack
socket for charger
Inter–board connector 5469049 44–way connection to sys-
tem module
Table 6. System Connector X502
Pin
No.
1 AGND Analogue Ground
Name Function Input/
Output
Minimum
Typical /
Nominal
Maxi-
mum
Uif Module
Unit
2 BTEMP_Vi-
bEn
3 MIC Internal Micro-
4 VBATT Battery Voltage 3.2 3.6 5.1 V
5 GND System Ground
6 GND System Ground
7 MBUS Serial data inter-
8 ReqA Request for Ac-
9 SGND
10 XMIC Accessory Micro-
11 HEAR Headset earpiece
12 VIN Charger Voltage I/P 16.9
13 (JackDet)
Battery Temperature detection
Vibra enable
phone signal
face
cessory
phone signal
signal
I/P 0.04
10
I/P 22.4 mV p–p
I/O Digital signal levels + interrupt
capability
I/P Digital Interrupt + A–D I/P to
engine to determine accessory
ID
I/P 89 (HF)
6.0
(Headset
)
O/P Level depends on the accessory
connected
2.8 V
6800 mV p–p
900
kHz
V
mA
14 ChrgCtrl Charger control
signal
15 GND System Ground
16 ChrgCtrl See 14 above
17 BSI Battery size
detection
Issue 2 06/98
O/P 30 37 Hz
I/P 0.04 2.8 V
Page 4 – 5
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