Integration Manual

SARA-R4/N4 series - System Integration Manual
UBX-16029218 - R13 System description Page 10 of 119
1.3 Pin-out
Table 3 lists the pin-out of the SARA-R4/N4 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 1.5.1for 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 kΩ 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 kΩ 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 Ω 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 kΩ 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.
UART RXD 13 O UART data output 1.8 V output, Circuit 104 (RXD) in ITU-T V.24,
for AT commands, data communication, FOAT.
See section 1.9.1 for functional description.
See section 2.6.1 for external circuit design-in.