SARA-R4 series - System Integration Manual
UBX-16029218 - R06
Appendix
Page 91 of 102
Appendix
A
Migration between SARA modules
A.1
Overview
SARA-G3 2G modules, SARA-U2 3G/2G modules, SARA-R4 LTE Cat M1/NB1 modules and SARA-N2 LTE Cat NB1
modules have exactly the same u-blox SARA form factor (26.0 x 16.0 mm, 96-pin LGA), with compatible pin
assignment as described in Figure 46, so that the modules can be alternatively mounted on a single application
board using exactly the same copper mask, solder mask and paste mask.
64 63
61 60
58 57
55 54
22 23
25 26
28 29
31 32
11
10
8
7
5
4
2
1
21
19
18
16
15
13
12
43
44
46
47
49
50
52
53
33
35
36
38
39
41
42
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
CTS
RTS
DCD
RI
V_INT
RSVD
GND
GPIO6
RESET_N
GPIO1
PWR_ON
RXD
TXD
3
20
17
14
9
6
24
27
30
51
48
45
40
37
34
59
62
56
GND
GND
DSR
DTR
GND
VUSB_DET
GND
GND
U
SB
_D
-
U
SB
_D
+
RSVD
GND
G
PI
O
2
G
PI
O
3
SD
A
SCL
G
PI
O
4
GND
GND
GND
SDIO_D2
SDIO_CMD
SDIO_D0
SDIO_D1
GND
VCC
VCC
RSVD
I2S_TXD/SPI_CS
I2S_CLK/SPI_CLK
SIM_CLK
SIM_IO
VSIM
GPIO5
VCC
SDIO_D3
SDIO_CLK
SIM_RST
I2S_RXD/SPI_MISO
I2S_WA/SPI_MOSI
GND
GND
GND
GND
GND
GND
GND
GND
GND
A
N
T_
D
ET
ANT
SARA-R4
Top View
Pin 65-96: GND
64 63
61 60
58 57
55 54
22 23
25 26
28 29
31 32
11
10
8
7
5
4
2
1
21
19
18
16
15
13
12
43
44
46
47
49
50
52
53
33
35
36
38
39
41
42
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
CTS
RTS
DCD
RI
V_INT
V_BCKP
GND
RSVD
RESET_N
GPIO1
PWR_ON
RXD
TXD
3
20
17
14
9
6
24
27
30
51
48
45
40
37
34
59
62
56
GND
GND
DSR
DTR
GND
RSVD
GND
GND
R
X
D
_A
U
X
TX
D
_A
U
X
RSVD
GND
G
PI
O
2
G
PI
O
3
SD
A
SCL
G
PI
O
4
GND
GND
GND
SPK_P
MIC_BIAS
MIC_GND
MIC_P
GND
VCC
VCC
RSVD
I2S_TXD
I2S_CLK
SIM_CLK
SIM_IO
VSIM
SIM_DET
VCC
MIC_N
SPK_N
SIM_RST
I2S_RXD
I2S_WA
GND
GND
GND
GND
GND
GND
GND
GND
GND
A
N
T_
D
ET
ANT
SARA-G3
Top View
Pin 65-96: GND
64 63
61 60
58 57
55 54
22 23
25 26
28 29
31 32
11
10
8
7
5
4
2
1
21
19
18
16
15
13
12
43
44
46
47
49
50
52
53
33
35
36
38
39
41
42
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
CTS
RTS
DCD
RI
V_INT
V_BCKP
GND
CODEC_CLK
RESET_N
GPIO1
PWR_ON
RXD
TXD
3
20
17
14
9
6
24
27
30
51
48
45
40
37
34
59
62
56
GND
GND
DSR
DTR
GND
VUSB_DET
GND
GND
U
SB
_D
-
U
SB
_D
+
RSVD
GND
G
PI
O
2
G
PI
O
3
SD
A
SCL
G
PI
O
4
GND
GND
GND
RSVD
RSVD
RSVD
RSVD
GND
VCC
VCC
RSVD
I2S_TXD
I2S_CLK
SIM_CLK
SIM_IO
VSIM
SIM_DET
VCC
RSVD
RSVD
SIM_RST
I2S_RXD
I2S_WA
GND
GND
GND
GND
GND
GND
GND
GND
GND
A
N
T_
D
ET
ANT
SARA-U2
Top View
Pin 65-96: GND
64 63
61 60
58 57
55 54
22 23
25 26
28 29
31 32
11
10
8
7
5
4
2
1
21
19
18
16
15
13
12
43
44
46
47
49
50
52
53
33
35
36
38
39
41
42
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
CTS
RTS
RSVD
RSVD
V_INT
RSVD
GND
RSVD
RESET_N
GPIO1
RSVD
RXD
TXD
3
20
17
14
9
6
24
27
30
51
48
45
40
37
34
59
62
56
GND
GND
RSVD
RSVD
GND
RSVD
GND
GND
RSVD
RSVD
RSVD
GND
RSVD
G
PI
O
2
SD
A
SCL
RSVD
GND
GND
GND
RSVD
RSVD
RSVD
RSVD
GND
VCC
VCC
RSVD
RSVD
RSVD
SIM_CLK
SIM_IO
VSIM
RSVD
VCC
RSVD
RSVD
SIM_RST
RSVD
RSVD
GND
GND
GND
GND
GND
GND
GND
GND
GND
A
N
T_
D
ET
ANT
SARA-N2
Top View
Pin 65-96: GND
Figure 46: SARA-G3, SARA-U2, SARA-R4 and SARA-R4 series
modules’ layout and pin assignment
SARA modules are also form-factor compatible with the u-blox LISA, LARA and TOBY cellular module families:
although each has a different form factor, the footprints for the TOBY, LISA, SARA and LARA modules have
been developed to ensure layout compatibility.
With the u-blox “nested design” solution, any TOBY, LISA, SARA or LARA module can be alternatively mounted
on the same space of a single “nested” application board as described in Figure 47. Guidelines in order to
implement a nested application board, description of the u-blox reference nested design and comparison
between TOBY, LISA, SARA and LARA modules are provided in the
Nested Design Application Note
LISA cellular module
LARA cellular module
SARA cellular module
Nested application board
TOBY cellular module
Figure 47: TOBY, LISA, SARA, LARA
modules’ layout compatibility: all modules are accommodated on the same nested footprint