Nokia NHM-7 series, Service Manual

Page: 30 / 212

NHM–7
System Module & UI
PAMS Technical Documentation
Page 18 Issue 1 10/2001
Nokia Corporation
Note Condition Max Nom Min Signal Pin
5 SCLK 0.8*VIO
0
VIO
0.22*VIO
4.0MHz
Logic ’1’
Logic ’0’
Max frequency
Serial clock in-
put
250ns t
scyc
Clock cycle
110ns t
shw
Clock high
110ns t
slw
Clock low
6 VDDI (VIO) 1.72V 1.8V 1.88V Logic voltage
supply
Connected to
VIO
7 VDD
(VFLASH1) 2.72V 2.78V 2.86V Voltage supply
Connected to
VFLASH1
8 VOUT 9V Booster output,
C=1uF con-
nected to GND
DC connector
Pin Signal Min Nom Max Condition Note
2 VCHAR 7.0 V
RMS
8.4 V
RMS
9.2 V
RMS
850 mA
Fast char-
ger Charger posi-
tive input
1 CHGND 0 Charger ground
Headset connector
Pin Signal Min Nom Max Condition Note
5 XMICP 1V
pp
G = 0dB 1k
Ω
to MIC2B
100 mV
pp
G = 20dB
2.0 V 2.1 V 2.25 V DC
3 XMICN 1V
pp
G = 0 dB 1k
Ω
to GND
100 mV
pp
G = 20dB
4 XEARN
0.75V 0.8V 0.85V DC
1V
pp
AC
7 XEARP 0.75V 0.8V 0.85V DC
1V
pp
AC
5 HookInt 0V 2.86V
(VFLASH1) Connected to
UEM AD–con-
verter
6 HeadInt 0V 2.86V
(VANA) Accessory
detection