SX1239 查看數據表（PDF） - Semtech Corporation
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SX1239 Datasheet PDF : 73 Pages
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ADVANCED COMMUNICATIONS & SENSING
SX1239
DATASHEET
TS_FEI
TS_AFC
TS_RSSI
DR_RSSI
FEI sampling time
AFC Response Time
RSSI Response Time
RSSI Dynamic Range
Receiver is ready
Receiver is ready
Receiver is ready
AGC enabled
-
4.Tbit
-
-
-
4.Tbit
-
-
-
2.Tbit
-
-
Min
-
-115
- dBm
Max -
0
- dBm
* Set SensitivityBoost in RegTestLna to 0x2D to reduce the noise floor in the receiver
2.4.4. Digital Specification
Conditions: Temp = 25°C, VDD = 3.3V, FXOSC = 32 MHz, unless otherwise specified.
Table 7 Digital Specification
Symbol
VIH
VIL
VOH
VOL
FSCK
tch
tcl
trise
tfall
tsetup
thold
tnsetup
tnhold
tnhigh
T_DATA
Description
Digital input level high
Digital input level low
Digital output level high
Digital output level low
SCK frequency
SCK high time
SCK low time
SCK rise time
SCK fall time
MOSI setup time
MOSI hold time
NSS setup time
NSS hold time
NSS high time between SPI
accesses
DATA hold and setup time
Conditions
Min Typ Max Unit
0.8
-
- VDD
-
-
0.2 VDD
Imax = 1 mA
0.9
-
- VDD
Imax = -1 mA
-
-
0.1 VDD
-
-
10 MHz
50
-
- ns
50
-
- ns
-
5
- ns
-
5
- ns
from MOSI change to SCK rising
edge
30
-
from SCK rising edge to MOSI
change
60
-
from NSS falling edge to SCK rising 30
-
edge
from SCK falling edge to NSS rising 30
-
edge, normal mode
20
-
- ns
- ns
- ns
- ns
- ns
250
-
- ns
Rev 3 - Jan 2011
Page 14
www.semtech.com
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