Page 1
After Sales Technical Documentation
NHE–6 and NHK–6 Series Transceivers
Chapter 5
UIF MODULE GU8
Original 07/97
Page 2
NHE–6, NHK–6
After Sales
UIF Module
CHAPTER 5 – UIF MODULE GU8
Contents
Introduction Page 5–3
External Signal and Connections Page 5–3
UIF Module Main Connector, X400 Page 5–3
LCD Display Module Connector X401 Page 5–4
Technical Outline Page 5–5
Mechanics Page 5–5
Electronics Page 5–6
Functional Description Page 5–6
Circuit Description Page 5–6
Circuit Diagram of GU8 Page 5–9
Layout Diagram of GU8 Page 5–10
Parts List of GU8 (EDMS issue: 1.9) Page 5–11
Technical Documentation
Page 5–2
Original 07/97
Page 3
After Sales
NHE–6, NHK–6
Technical Documentation
Introduction
This document describes the UIF module GU8. GU8 is used in both GSM
(NHE–6) and PCN (NHK–6) transceivers.
External Signal and Connections
There are two connectors in this module: X401 (the Display Module Connector)
and X400 (UIF Connector)
UIF Module Main Connector, X400
Pin/Conn Line Symbol Notes
1/X400 MICP Positive Mic terminal
2/X400 MICN Negative Mic terminal
UIF Module
• min/typ/max : 0...2...12.5 mVAC
• min/typ/max : 0...2...12.5 mVAC
3,6,30/X400 GND Digital ground
4/X400 VL Logic voltage
• min/typ/max : 3.0...3.16...3.3 V
5/X400 SYSRESET X Reset for display driver
7/X400 KEYLIGHT Keymat backlights OFF
• min/typ/max : 0...0...0.2 V
Keymat backlights ON
• min/typ/max : 2.8...3.16...3.3 V
8/X400 LCDLIGHT LCD backlights OFF
• min/typ/max : 0...0...0.2 V
LCD backlights ON
• min/typ/max : 2.8...3.16...3.3 V
9/X400 BUZZER Ground
10/X400 GND
11/X400 SLIDEON Slide pos. sensing
• min/max : 0...3.3 V
12/X400 GENSCLK Display data clk LOW
• min/typ/max : 0...0...0.6 V
Display data clk HIGH
• min/typ/max : 2.4...3.16...3.3 V
Original 07/97
Page 5–3
Page 4
NHE–6, NHK–6
After Sales
UIF Module
Pin/Conn Line Symbol Notes
13/X400 GENSD Display data line LOW
14/X400 LCDENX Display driver Enable
15/X400 VB Battery voltage
16/X400 XPWRON Power key free, pull up in PSCLD
17/X400 EARN Negative Earpiece Terminal
Technical Documentation
• min/typ/max : 0...0...0.6 V
Display data line HIGH
• min/typ/max : 2.4...3.16...3.3 V
• min/typ/max : 0...0...0.9 V
Display driver Disable
• min/typ/max : 2.4...3.16...3.3 V
• min/typ/max : 5.3...6.0...10.26 V
• min/typ/max : 5.3...6.0...10.26 V
Power key pressed
• min/max : 0...0.4 V
• min/typ/max : 0...14...220 mVAC
18/X400 EARP Positive Earpiece Terminal
19/X400 CALL_LED Call indicator LED OFF
20–25/X400 UIF(0:5) LCD driving and keyboard ROW
26–29/X400 COL(0:3) Column scan for key matrix
LCD Display Module Connector X401
Pin/Conn Line symbol Signal description
1/X401 V5 LCD driver supply voltage
2/X401 V4 LCD driver supply voltage
3/X401 V3 LCD driver supply voltage
4/X401 V2 LCD driver supply voltage
• min/typ/max : 0...14...220 mVAC
• min/typ/max : 0...0...0.4 V
Call indicator LED ON
• min/typ/max : 2.4...3.16...3.3 V
reading
Page 5–4
5/X401 V1 LCD driver supply voltage
6/X401 VDD Supply voltage
7/X401 VR Voltage adjustment pin
8/X401 VOUT DC/DC voltage converter capacitor
9/X401 CAP2– DC/DC voltage converter capacitor
Original 07/97
Page 5
After Sales
NHE–6, NHK–6
Technical Documentation
Pin/Conn Line symbol Signal description
10/X401 CAP2+ DC/DC voltage converter capacitor
11/X401 CAP1– DC/DC voltage converter capacitor
12/X401 CAP1+ DC/DC voltage converter capacitor
13/X401 GND Ground
14/X401 OSC1 Feedback resistor of built–in osc.
15/X401 OSC2 Feedback resistor of built–in osc.
16/X401 GND Ground
17/X401 A0 Control/display data flag input
18/X401 C86 µP interface select input
19/X401 CS2 Chip select input
20/X401 CS1 Chip select input
21/X401 P/S Parallel/serial data input select
UIF Module
22/X401 SI Serial data input
23/X401 SCL Serial clock input
24/X401 RES Reset
25/X401 VDD Supply voltage
Technical Outline
Mechanics
The modules are made from a single flexible printed circuit board – loaded with
SMD components. A Flexible PCB was used for a number of reasons:
– The material is only 0.3mm thick – so the phone’s height buildup can be
kept to a minimum.
– The Volume and Power keys wiring can be folded to fit in the phone during
assembly – since the circuit is flexible.
– Bending of UI–module
The major mechanical parts on the UIF assembly include the following:
– Display Module: LCD, LCD driver TAB circuit & Light–guide.
– Main Keydome assembly: Adhesive film holding 20 metal dome clickers
– Volume Keydome assembly: Adhesive film holding 2 metal dome clickers .
– Power Keydome assembly: Adhesive film holding 1 metal dome clicker
– Acoustic Components: Microphone and speaker connection to UI–board by
using spring contacts
Original 07/97
Page 5–5
Page 6
NHE–6, NHK–6
After Sales
UIF Module
Electronics
The following sections of circuitry are included on the Flexi:
– Microphone Circuit
– Speaker Circuit
– Buzzer Circuit
– LCD Display Module
– LCD voltage divider circuit.
– Keyboard & Display lighting circuits
– Keyboard switch matrix.
– Power & Volume control switch matrix.
– Slide position sensing circuit.
Functional Description
Circuit Description
The module is connected with 30 pin connector (X400) to the system board.
Technical Documentation
The module includes following main functional blocks:
– Keyboard
– Illumination
– audio block
– LCD interface
– Slide position sensing
Power Distribution
VL
VB
Call
LED
– microphone pads
– earpiece pads
– buzzer
LCD
Lights
Key
Lights
Voltage
limiter
LCD
Buzzer
GND
Page 5–6
Original 07/97
Page 7
After Sales
NHE–6, NHK–6
Technical Documentation
Led Drivers
The keyboard illumination is achieved by using two transistors (BCX19) wired
as simple constant current sinks. Both transistors supply six LED‘s, so the keyboard is illuminated with 12 LED‘s. The bases of the two transistor are wired
together and controlled by MCU via PSCLD. The led current is fixed by the values of R401 and R402 and the ratio of R411 to R413.
The display illumination operates in a similar way to the keyboard drivers, but
only one transistors (V402) is used to drive six leds. The current in this case is
defined by the value of R414 and the ratio of R412 to R404.
Call Indicator
The Call LED is fed from a simple emitter follower (V400). The led current is
fixed by the value of R400.
Buzzer Driver
The buzzer is driven from NPN transistors (V403 and V425), which act as a
buffer for a CMOS output signal applied at BUZZER.
UIF Module
The ringing volume is controlled by pulse width modulation.
The diode V413 prevents damage to the transistors when they switch off, ab-
sorbing the stored energy in the buzzer inductance and suppressing large positive going spikes on the transistor collectors.
Audio Circuitry
The microphone is routed through RF–suppression to UIF–connector X400
(pins 1 and 2)
The earpiece is routed directly to UIF– connector X400 (pins 17 and 18).
RF Suppression
Small value ceramic capacitors are fitted to audio lines to avoid problems with
rf interference. In microphone lines, C406, C407, C412, C413, L1 and L2 trap
common mode noise. Capacitors C410 and C411 have been placed near the
earpiece pads.
Keyboard Scanning and Display Driver Control
COL(0–3) are used as column lines on keyboard. UIF(0–5) are used as row
lines. UIF5 is also multiplexed with the display driver control signal.
When a key is pressed, the system ASIC gets an interrupt from a row and the
MCU starts scanning. One column at a time is written to LOW and rows are
used to read which key it was.
Original 07/97
Page 5–7
Page 8
NHE–6, NHK–6
After Sales
UIF Module
LCD Module
The LCD module includes the LCD and the display driver. The driver TAB has
been connected to the LCD. The display driver type is SED1560 from SEIKO
EPSON. It has an internal clock oscillator and a negative voltage generator to
generate a negative rail required for operation. The oscillator frequency is fixed
by the resistance from pins 16 to 17 of LCD– connector X401, with the value of
R415, the frequency should be about 18kHz
The display driver is connected to the system board with a serial data bus.
Data input is enabled when CS1 is LOW. A0 is control/display data flag input.
Incoming data is control data when A0 is LOW, and display data when A0 is
HIGH. Serial data is read on the rising edge of SCL. On every eight clock
pulse, the data is transferred from the shift register and processed as 8–bit parallel data. A0 is read on the rising edge of every eight clock signal.
Technical Documentation
Page 5–8
Original 07/97
Page 9
After Sales
NHE–6, NHK–6
Technical Documentation
Circuit Diagram of GU8
UIF Module
Original 07/97
Page 5–9
Page 10
NHE–6, NHK–6
After Sales
UIF Module
Layout Diagram of GU8
Technical Documentation
Page 5–10
Original 07/97
Page 11
After Sales
NHE–6, NHK–6
Technical Documentation
UIF Module
Parts List of GU8 (EDMS issue: 1.9) Code: 0200558
ITEM CODE DESCRIPTION VALUE TYPE
R400 1430009 Chip resistor 220 5 % 0.063 W 0603
R422 1430035 Chip resistor 1.0 k 5 % 0.063 W 0603
R404 1430043 Chip resistor 2.2 k 5 % 0.063 W 0603
R411 1430043 Chip resistor 2.2 k 5 % 0.063 W 0603
R412 1430043 Chip resistor 2.2 k 5 % 0.063 W 0603
R405 1430043 Chip resistor 2.2 k 5 % 0.063 W 0603
R413 1430047 Chip resistor 3.3 k 5 % 0.063 W 0603
R406 1430047 Chip resistor 3.3 k 5 % 0.063 W 0603
R421 1430051 Chip resistor 4.7 k 5 % 0.063 W 0603
R408 1430065 Chip resistor 10 k 5 % 0.063 W 0603
R420 1430071 Chip resistor 22 k 5 % 0.063 W 0603
R409 1430087 Chip resistor 100 k 5 % 0.063 W 0603
R407 1430087 Chip resistor 100 k 5 % 0.063 W 0603
R410 1430087 Chip resistor 100 k 5 % 0.063 W 0603
R415 1430111 Chip resistor 1.0 M 5 % 0.063 W 0603
R419 1430113 Chip resistor 348 k 1 % 0.063 W 0603
R401 1430163 Chip resistor 33 5 % 0.063 W 0603
R402 1430163 Chip resistor 33 5 % 0.063 W 0603
R414 1430163 Chip resistor 33 5 % 0.063 W 0603
R416 1430199 Chip resistor 432 k 1 % 0.063 W 0603
R403 1825001 Chip varistor vwm18v vc40v 0603 0603
C400 2310408 Ceramic cap. Y5 V 1206
C401 2310408 Ceramic cap. Y5 V 1206
C402 2310408 Ceramic cap. Y5 V 1206
C403 2310408 Ceramic cap. Y5 V 1206
C404 2310408 Ceramic cap. Y5 V 1206
C431 2312293 Ceramic cap. Y5 V 1206
C430 2312410 Ceramic cap. 1.0 u 10 % 16 V 1206
C409 2312410 Ceramic cap. 1.0 u 10 % 16 V 1206
C420 2312410 Ceramic cap. 1.0 u 10 % 16 V 1206
C421 2312410 Ceramic cap. 1.0 u 10 % 16 V 1206
C412 2320027 Ceramic cap. 4.7 p 0.25 % 50 V 0603
C413 2320027 Ceramic cap. 4.7 p 0.25 % 50 V 0603
C406 2320043 Ceramic cap. 22 p 5 % 50 V 0603
C407 2320043 Ceramic cap. 22 p 5 % 50 V 0603
C410 2320043 Ceramic cap. 22 p 5 % 50 V 0603
C411 2320043 Ceramic cap. 22 p 5 % 50 V 0603
C415 2320043 Ceramic cap. 22 p 5 % 50 V 0603
C405 2320110 Ceramic cap. 10 n 10 % 50 V 0603
C408 2320110 Ceramic cap. 10 n 10 % 50 V 0603
L001 3640011 Filt z>600r/100m 0r6max 0.2a 0805 0805
L002 3640011 Filt z>600r/100m 0r6max 0.2a 0805 0805
V413 4110070 Diode BAS16W 75 V 0.25 A SOT323
Original 07/97
Page 5–11
Page 12
NHE–6, NHK–6
After Sales
UIF Module
V418 4110070 Diode BAS16W 75 V 0.25 A SOT323
V415 4110070 Diode BAS16W 75 V 0.25 A SOT323
V430 4110072 Diode x 2 BAV99W 70 V 0.2 A SOT323
V400 4200836 Transistor BCX19 npn 50 V 0.5 A SOT23
V402 4200836 Transistor BCX19 npn 50 V 0.5 A SOT23
V404 4200836 Transistor BCX19 npn 50 V 0.5 A SOT23
V405 4200836 Transistor BCX19 npn 50 V 0.5 A SOT23
V403 4200836 Transistor BCX19 npn 50 V 0.5 A SOT23
V425 4200836 Transistor BCX19 npn 50 V 0.5 A SOT23
V432 4210100 Transistor BC848W npn 30 V SOT323
N401 4340065 Mic5201 regld 5v 0.2a 1% sot223 SOT223
H400 4850073 IC, lcd+driver graphic do DSL/HD843 DOTM
V401 4860005 Led Green 0603
V411 4860005 Led Green 0603
V412 4860005 Led Green 0603
V419 4860005 Led Green 0603
V420 4860005 Led Green 0603
V429 4860005 Led Green 0603
V406 4864389 Led 0603
V408 4864389 Led 0603
V409 4864389 Led 0603
V410 4864389 Led 0603
V414 4864389 Led 0603
V416 4864389 Led 0603
V417 4864389 Led 0603
V421 4864389 Led 0603
V422 4864389 Led 0603
V423 4864389 Led 0603
V424 4864389 Led 0603
V427 4864389 Led 0603
V428 4864389 Led 0603
B400 5140029 SM, d buzzer 94db 5vdc40r 14x11 14x11x3
X400 5469288 SM, conn 2x15 f p0.8 pcb/pcb 2.8 2.8MM
9460168 Reflector dmc00050 nhc–6
9460217 Buzzer gasket dmd02853 nhe–6 gu GU8
9790163 Volyme keypad dmd000097
9790164 Power keypad dmc00009 nhe–6
9795018 Keydomes 4C25593 NHE–6
9795019 Keydomes 4C25596 NHE–6
9855024 PCB FLEX GU8 202.5X135.9 D 3/PA
9855024 PC board FLEX gu8 202.5x135.9 d 3/pa
Technical Documentation
Page 5–12
Original 07/97
Loading...