XE1209 データシートの表示（PDF） - Semtech Corporation
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XE1209 Datasheet PDF : 10 Pages
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XE1209
Ultra Low Power CMOS Transceiver
The RE input and the bit TR in the configuration register determine the mode setting.
The Table 1 gives the status of the main blocks in each mode.
M1
standby
Receiver
off
Transmitter
off
Carrier
off
detector
Clock
Osc ON/off
generator
PLL
off
Service block
off
Digital part
ON
M2
carrier detection
off
off
ON
ON / off
off
ON
ON
M3
Tx
off
ON
off
ON / off
ON
ON
ON
M4
Rx
ON
off
off
ON / off
ON
ON
ON
Table 1 Mode selection
When the oscillator is off (bit OSC=0), an external clock is applied on the pin QIN.
4 ABSOLUTE MAXIMUM RATINGS, OPERATING RANGES AND EXTERNAL
CONDITIONS
Symb
STO_TR
TR
VDD
Parameters
Storage temperature
range
Operating temperature
range
Operating supply
voltage
Conditions
Min
Typ
Max Unit
-40
-
+85 °C
-10
+25
+60 °C
2.0
2.6
3.2
V
FREF_EXT PLL reference
frequency
External oscillator,
VDD=2.6 V, temp=25 °C
32.735 32.768 32.800 kHz
CL_CK
External capacitate
Full range of supply and
-
-
5
pF
load on the pin CLK
temperature
IL_CK
External leakage
Full range of supply and
-
-
50
nA
current on the pin CLK temperature
RP_OSC
Parasitic resistance
Full range of supply and
20
-
-
MΩ
between the pins QIN, temperature
QOUT and any other
ASIC pin
CP_OSC
Parasitic capacitance Full range of supply and
-
-
0.5
pF
between the pins QIN, temperature
QOUT and any other
ASIC pin
Stresses above those listed in this clause may cause permanent device failure. Exposure to absolute maximum
ratings for extended periods may affect device reliability.
Electrostatic discharges:
• The device withstands 2000 Volts Standardized Human Body Model ESD pulses when tested according to
MIL883C method 3015.5 (pin combination 2).
Latch-up:
• Static latch-up protection level is 30mA at 25 C
© Semtech 2005
www.semtech.com
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