SARA-U2
Pin No
Pin Name
Description
26
SDA
I
2
C Data I/O
1.8 V, open drain
Driver strength: 1 mA
2
27
SCL
I
C Clock Output
1.8 V, open drain
Driver strength: 1 mA
28
USB_D-
USB Data I/O (D-)
High-Speed USB 2.0
29
USB_D+
USB Data I/O (D+)
High-Speed USB 2.0
30
GND
Ground
31
RSVD
Reserved
32
GND
Ground
33
RSVD
Reserved
To be externally connected to GND
2
34
I2S_WA
I
S Word Alignment I/O, or GPIO
1.8 V, Driver strength: 2 mA
35
I2S_TXD
I
2
S Data Output, or GPIO
1.8 V, Driver strength: 2 mA
36
I2S_CLK
I
2
S Clock I/O, or GPIO
1.8 V, Driver strength: 2 mA
2
37
I2S_RXD
I
S Data Input, or GPIO
1.8 V, Inner pull-down: ~9 k
38
SIM_CLK
SIM Clock Output
39
SIM_IO
SIM Data I/O
40
SIM_RST
SIM Reset Output
41
VSIM
SIM Supply Output
42
SIM_DET
1.8V SIM Detection
43
GND
Ground
44
RSVD
Reserved
45
RSVD
Reserved
46
RSVD
Reserved
47
RSVD
Reserved
48
RSVD
Reserved
49
RSVD
Reserved
50
GND
Ground
51-53
VCC
Module Supply Input
Normal range: 3.3 V – 4.4 V
Extended range: 3.1 V – 4.5 V
54-55
GND
Ground
56
ANT
RF Antenna Input/Output
57-58
GND
Ground
59
GND
Ground
60-61
GND
Ground
62
ANT_DET
Antenna Detection Input
63-96
GND
Ground
97-98
-
Not Available
99
-
Not Available
100
-
Not Available
Table 52: SARA-U2 and LARA-R2 series modules pin assignment with remarks for migration
For further details regarding the characteristics, capabilities, usage or settings applicable for each interface of the
SARA-U2 and LARA-R2 series modules, see LARA-R2 series Data Sheet [1], SARA-U2 series Data Sheet [27],
SARA-G3 / SARA-U2 series System Integration Manual [28], u-blox AT Commands Manual [2] and Nested Design
Application Note [26].
21
Not supported by LARA-R204 module "02" product version.
22
Not supported by "02" product versions.
UBX-16010573 - R02
LARA-R2 series - System Integration Manual
LARA-R2
Pin Name
Description
SDA
I
2
C Data I/O
1.8 V, open drain
Driver strength: 1 mA
2
SCL
I
C Clock Output
1.8 V, open drain
Driver strength: 1 mA
USB_D-
USB Data I/O (D-)
High-Speed USB 2.0
USB_D+
USB Data I/O (D+)
High-Speed USB 2.0
GND
Ground
RSVD
Reserved
GND
Ground
RSVD
Reserved
To be externally connected to GND
2
I2S_WA
I
S Word Alignment I/O
1.8 V, Driver strength: 6 mA
I2S_TXD
I
2
S Data Output
1.8 V, Driver strength: 6 mA
I2S_CLK
I
2
S Clock I/O
1.8 V, Driver strength: 6 mA
2
I2S_RXD
I
S Data Input
1.8 V, Inner pull-down: ~7.5 k
SIM_CLK
SIM Clock Output
SIM_IO
SIM Data I/O
SIM_RST
SIM Reset Output
VSIM
SIM Supply Output
SIM_DET
1.8 V GPIO settable as SIM Detection
GND
Ground
SDIO_D2
1.8 V, SDIO serial data [2]
SDIO_CLK
1.8 V, SDIO serial clock
SDIO_CMD
1.8 V, SDIO command
SDIO_D0
1.8 V, SDIO serial data [0]
SDIO_D3
1.8 V, SDIO serial data [3]
SDIO_D1
1.8 V, SDIO serial data [1]
GND
Ground
VCC
Module Supply Input
Normal range: 3.3 V – 4.4 V
Extended range: 3.0 V – 4.5 V
GND
Ground
ANT1
RF Antenna Input/Output (primary)
GND
Ground
ANT_DET
Antenna Detection Input
GND
Ground
ANT2
RF Antenna Input (secondary)
GND
Ground
RSVD
Reserved
HSIC_DATA
HSIC USB data line
HSIC_STRB
HSIC USB strobe line
Objective Specification
Remarks for migration
No functional difference
No functional difference
No functional difference
No functional difference
No functional difference
No functional difference
21
, or GPIO
No functional difference
21
, or GPIO
No functional difference
21
, or GPIO
No functional difference
21
, or GPIO
No functional difference
No functional difference
No functional difference
No functional difference
No functional difference
No functional difference
22
RSVD SDIO
22
RSVD SDIO
22
RSVD SDIO
22
RSVD SDIO
22
RSVD SDIO
22
RSVD SDIO
No functional difference
Larger range for LARA-R2
No functional difference
GND ANT_DET
ANT_DET ANT2
No functional difference
22
Not Available HSIC
22
Not Available HSIC
Appendix
Page 142 of 148