Datasheet

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SX1272/73
WIRELESS, SENSING & TIMING DATASHEET
Rev. 2 - July 2014
©2014 Semtech Corporation
1.4. Pin Description
Table 2 Pin Description
Number Name Type Description
0 GROUND
-
Exposed ground pad
1VBAT1
-
Supply voltage
2VR_ANA
-
Regulated supply voltage for analogue circuitry
3 VR_DIG
-
Regulated supply voltage for digital blocks
4XTA
I/O
XTAL connection or TCXO input
5XTB
I/O
XTAL connection
6 RESET
I/O
Reset trigger input
7NC
-
Can be connected to Ground
8NC
-
Can be connected to Ground
9DIO0
I/O
Digital I/O, software configured
10 DIO1/DCLK
I/O
Digital I/O, software configured
11 DIO2/DATA
I/O
Digital I/O, software configured
12 DIO3
I/O
Digital I/O, software configured
13 DIO4
I/O
Digital I/O, software configured
14 DIO5
I/O
Digital I/O, software configured
15 VBAT2
-
Supply voltage
16 GND
-
Ground
17 SCK
I
SPI Clock input
18 MISO
O
SPI Data output
19 MOSI
I
SPI Data input
20 NSS
I
SPI Chip select input
21 RF_MOD
O
NC
22 GND
O
Ground
23 RXTX
O
Rx/Tx switch control: high in Tx
24 RFO
O
RF output
25 RFI
I
RF input
26 GND
O
Ground
27 PA_BOOST
O
Optional high-power PA output
28 VR_PA
O
Regulated supply for the PA