Quectel SC20 Series - Page 135

Smart Module Series
SC20_Series_Hardware_Design 134 / 133
SD Card Secure Digital Card
SMS Short Message Service
SPI Serial Peripheral Interface
TDD Time-Division Duplex
TP Touch Panel
TVS Transient Voltage Suppressor
Tx Transmit
UART Universal Asynchronous Receiver & Transmitter
UMTS Universal Mobile Telecommunications System
USB Universal Serial Bus
(U)SIM (Universal) Subscriber Identity Module
VBAT Voltage at Battery (Pin)
Vmax Maximum Voltage
Vmin Minimum Voltage
Vnom Nominal Voltage
V
I
Voltage Input
V
IH
min Minimum High-level Input Voltage
V
IL
max Maximum Low-level Input Voltage
V
OH
max Maximum High-level Output Voltage
V
OH
min Minimum High-level Output Voltage
V
OL
max Maximum Low-level Output Voltage
WCDMA Wideband Code Division Multiple Access
WLAN Wireless Local Area Network