SARA-R4 series - System Integration Manual
UBX-16029218 - R06
System description
Page 10 of 102
1.3
Pin-out
Table 3 lists the pin-out of the SARA-R4 series modules, with pins grouped by function.
Function
Pin Name
Pin No
I/O
Description
Remarks
Power
VCC
51, 52, 53
I
Module supply input
VCC
supply circuit affects the RF performance and
compliance of the device integrating the module with
applicable required certification schemes.
See section 1.5.1 for functional description / requirements.
See section 2.2.1 for external circuit design-in.
GND
1, 3, 5, 14,
20-22, 30, 32,
43, 50, 54, 55,
57-61, 63-96
N/A
Ground
GND
pins are internally connected each other.
External ground connection affects the RF and thermal
performance of the device.
See section 1.5.1 for functional description.
See section 2.2.1 for external circuit design-in.
V_INT
4
O
Generic digital
interfaces supply
output
V_INT
= 1.8 V (typical) generated by internal regulator
when the module is switched on, outside the low power
PSM deep sleep mode.
Test-Point for diagnostic access is recommended.
See section 1.5.2 for functional description.
See section 2.2.2 for external circuit design-in.
System
PWR_ON
15
I
Power-on input
Internal 200 k
pull-up resistor.
Test-Point for diagnostic access is recommended.
See section 1.6.1 for functional description.
See section 2.3.1 for external circuit design-in.
RESET_N
18
I
External reset input
Internal 37 k
pull-up resistor.
Test-Point for diagnostic access is recommended.
See section 1.6.3 for functional description.
See section 2.3.2 for external circuit design-in.
Antenna
ANT
56
I/O
Primary antenna
Main Tx / Rx antenna interface.
50
nominal characteristic impedance.
Antenna circuit affects the RF performance and application
device compliance with required certification schemes.
See section 1.7 for functional description / requirements.
See section 2.4 for external circuit design-in.
ANT_DET
62
I
Antenna detection
ADC for antenna presence detection function
See section 1.7.2 for functional description.
See section 2.4.2 for external circuit design-in.
SIM
VSIM
41
O
SIM supply output
VSIM
= 1.8 V / 3 V output as per the connected SIM type.
See section 1.8 for functional description.
See section 2.5 for external circuit design-in.
SIM_IO
39
I/O
SIM data
Data input/output for 1.8 V / 3 V SIM
Internal 4.7 k
pull-up to
VSIM
.
See section 1.8 for functional description.
See section 2.5 for external circuit design-in.
SIM_CLK
38
O
SIM clock
4.8 MHz clock output for 1.8 V / 3 V SIM
See section 1.8 for functional description.
See section 2.5 for external circuit design-in.
SIM_RST
40
O
SIM reset
Reset output for 1.8 V / 3 V SIM
See section 1.8 for functional description.
See section 2.5 for external circuit design-in.
