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SX1231
WIRELESS & SENSING PRODUCTS
1.3. Pin Description
DATASHEET
Table 1
SX1231 Pinouts
Pin Number
QFN
TSSOP
Name
Type
Description
0
1
2
3
4
5
6
-
7
8
9
10
11
12
-
13
14
15
16
17
18
19
20
21
22
23
-
24
-
-
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
10
11
GROUND
VBAT1
VR_ANA
VR_DIG
XTA
XTB
RESET
GND
DIO0
DIO1/DCLK
DIO2/DATA
DIO3
DIO4
DIO5
GND
VBAT2
GND
SCK
MISO
MOSI
NSS
RXTX
GND
RFIO
GND
PA_BOOST
GND
VR_PA
GND
-
-
-
-
I/O
I/O
I/O
-
I/O
I/O
I/O
I/O
I/O
I/O
-
-
-
I
O
I
I
O
-
I/O
-
O
-
-
-
Exposed ground pad
Supply voltage
Regulated supply voltage for analogue circuitry
Regulated supply voltage for digital blocks
XTAL connection
XTAL connection
Reset trigger input
Ground
Digital I/O, software configured
Digital I/O, software configured
Digital I/O, software configured
Digital I/O, software configured
Digital I/O, software configured
Digital I/O, software configured
Ground
Supply voltage
Ground
SPI Clock input
SPI Data output
SPI Data input
SPI Chip select input
Rx/Tx switch control: high in Tx
Ground
RF input / output
Ground
Optional high-power PA output
Ground
Regulated supply for the PA
Ground
Note
PA_BOOST can be left floating if unused
Rev. 7 - June 2013
Page 12
www.semtech.com
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