Integration Manual

Table Of Contents
LISA-U2 series - System Integration Manual
UBX-13001118 - R25 System description Page 105 of 182
SIM card holder
SW1
SW2
4
V_INT
51
GPIO5
R4
R3
OUTIN
GND
LDO Regulator
SHDN
3V8 1V8
GPIO3
GPIO4
TxD1
EXTINT0
23
24
R1
VCC
GPIO2 21
LISA-U2 series
u-blox GNSS
1.8 V receiver
U1
J1
C1
R5
R7
3V8
Network Indicator
R6
GPS Supply Enable
GPS Data Ready
GPS RTC Sharing
SIM Detection
20
GPIO1
DL1
T1
D1
R2
Figure 52: GPIO application circuit
Reference
Description
Part Number - Manufacturer
R1
47 k Resistor 0402 5% 0.1 W
Various manufacturers
U1
Voltage Regulator for GNSS receiver
See GNSS Module Hardware Integration Manual
R2
4.7 k Resistor 0402 5% 0.1 W
Various manufacturers
R3
1 k Resistor 0402 5% 0.1 W
Various manufacturers
R4
470 k Resistor 0402 5% 0.1 W
Various manufacturers
D1
ESD Transient Voltage Suppressor
USB0002RP or USB0002DP - AVX
J1
SIM Card Holder
CCM03-3013LFT R102 - C&K Components (or
equivalent)
R5
10 k Resistor 0402 5% 0.1 W
Various manufacturers
R6
47 k Resistor 0402 5% 0.1 W
Various manufacturers
R7
820 Resistor 0402 5% 0.1 W
Various manufacturers
DL1
LED Red SMT 0603
LTST-C190KRKT - Lite-on Technology Corporation
T1
NPN BJT Transistor
BC847 - Infineon
Table 43: Components for a GPIO application circuit