User Guide
Table Of Contents
PAMS
Technical Documentation
RAE–2
UIF Module BS2
Page 4 – 10
Original 02/99
NotesUnitMaxi-
mum
Typical /
Nominal
Mini-
mum
ParameterLine SymbolI/OPin
48 I LCD_ON PDA LCD en-
able
0
0.8xVSY
S
0.2xVSY
S
VSYS
V Low
High
49 V28_1 PDA LCD log-
ic su
pp
ly volt-
2.7 2.8 2.85 V
ic
su ly
volt
-
age
0.3 2.0 mA
50 O LCD_TEMP PDA LCD
temperature
0.2 0.9 2.5 V Voltage range
throughout the
whole temper-
ature range
0.88 0.90 0.91 V At +25°C
51 GND 0 V
Note:
VSYS
is
PDA
system
voltage
used
in
BS1
module,
min.
2.75
V,
typ.
2.80
V,
max.
2.85
V.
Interface to BS8 CMT Module
Conn. Parameter Mini-
mum
Typical / Nomi-
nal
Maxi-
mum
Unit /
Notes
Notes
X790,
X791
Impedance 50 W
X791
Transmitter frequency 890 915 MHz
Receiver frequency 935 960 MHz
Max. output power 2W (33 dBm)
Interface to BC2 LCD Module
Pin Line Symbol Parameter Mini-
mum
Typical Maxi-
mum
Unit Notes
1 VBB Supply voltage 2.7 2.8 2.85 V
300 mA
2 GENSCLK Serial clock input 0 3.2 4.0 MHz
0 0.3xVBB V Low
0.7xVBB VBB V High
3 GENSDIO Serial data input 0 0.3xVBB Low
0.7xVBB VBB High
4 LCDCD Control/display data
flag input
0 0.3xVBB Low, Control
0.7xVBB VBB High, Data
5 LCDCSx Chip select input 0 0.3xVBB Low, Chip se-
lected
0.7xVBB VBB High, Chip
unselected