Ublox SARA-G450 Series User Manual

SARA-G450 - System integration manual
UBX-18046432 - R08 System description Page 9 of 143
C1-Public
1.3 Pin-out
Table 3 lists the pin-out of the SARA-G450 modules, with pins grouped by function.
Function
Pin Name
Pin No
I/O
Description
Remarks
Power
VCC
51, 52, 53
I
Module supply
input
All VCC pins must be connected to external supply.
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 description and 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 to each other.
External ground connection affects the RF and thermal
performance of the device.
V_BCKP
2
I/O
Real Time Clock
supply
input/output
V_BCKP = 3.1 V (typical).
V_BCKP is generated by internal low power linear
regulator when a valid VCC supply is present.
See section 1.5.2 for functional description.
See section 2.2.2 for external circuit design-in.
V_INT
4
O
Generic Digital
Interfaces supply
output
V_INT supply output, rail of the Digital I/O Interfaces,
generated by internal linear regulator when the module
is switched on.
V_INT = 1.8 V (typical), if VSEL is connected to GND.
V_INT = 3 V (typical), if VSEL is unconnected.
Test-Point recommended for diagnostic purpose.
See section 1.5.3 for functional description.
See section 2.2.3 for external circuit design-in.
System
PWR_ON
15
I
Power-on input
Internal 28 k active pull-up to 2.5 V internal supply.
Test-Point recommended for diagnostic purpose.
See section 1.6.1 for functional description.
See section 2.3.1 for external circuit design-in.
PWR_OFF
18
I
Power-off input
Internally connected to 1.5 V internal supply.
Test-Point recommended for diagnostic purpose.
See sections 1.6.2, 1.6.3 for functional description.
See section 2.3.2 for external circuit design-in.
VSEL
21
I
Voltage selection
Input to select the operating voltage of the digital I/O
interfaces of the module (the UART interfaces, I2C
interface and GPIO pins).
See section 1.6.4 for functional description.
See section 2.3.3 for external circuit design-in.
Antenna
ANT
56
I/O
RF input/output for
antenna
50  nominal characteristic impedance.
Antenna circuit affects the RF performance and
compliance of the device integrating the module with
applicable required certification schemes.
See section 1.7 for description and requirements.
See section 2.4 for external circuit design-in.
ANT_DET
62
I
Input for antenna
detection
ADC input for antenna detection function.
See section 1.7.2 for functional description.
See section 2.4.2 for external circuit design-in.

Ublox SARA-G450 Series Specifications

General

Brand	Ublox
Model	SARA-G450 Series
Category	GSM/GPRS Modules
Language	English