Quectel UC20 User Manual

UMTS/HSPA Module Series
UC20 Hardware Design
UC20_Hardware_Design Confidential / Released 14 / 84
“
1)
” means when the module works within this temperature range, RF performance might degrade. For
example, the frequency error or the phase error would increase.
Main UART interface:
 Seven lines on main UART interface
 Support RTS and CTS hardware flow control
 Baud rate can reach up to 921600bps, 115200bps by default
 Used for AT command, data transmission or firmware upgrade
 Multiplexing function
Debug UART interface:
 Two lines on debug UART interface: DBG_TXD and DBG_RXD
 Can be used for GNSS NMEA sentences output
USB Interface
Compliant with USB 2.0 specification (slave only), the data transfer
rate can reach up to 480Mbps.
Used for AT command communication, data transmission, GNSS
NMEA output, software debug and firmware upgrade.
USB Driver: Windows XP, Windows Vista, Windows 7, Windows 8,
Windows CE5.0/6.0, Linux 2.6/3.0, Android 2.3/4.0.
Rx-diversity
Support UMTS Rx-diversity
GNSS Features
Gen8 of Qualcomm GNSS engine (GPS and GLONASS)
Protocol: NMEA 0183
AT Commands
Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT
commands.
Real Time Clock
Implemented
Network Indication
Two pins including NET_MODE and NET_STATUS to indicate
network connectivity status.
Antenna Interface
Include main UMTS antenna, UMTS diversity antenna, GNSS antenna
(passive).
Physical Characteristics
Size: 32.0±0.15 × 29.0±0.15 × 2.5±0.2mm
Weight: approx. 4.9g
Temperature Range
Normal operation: -35°C ~ +75°C
Restricted operation: -40°C ~ -35°C and +75°C ~ +85°C
1)
Storage temperature: -45°C ~ +90°C
Firmware Upgrade
USB interface (by default) or main UART interface.
RoHS
All hardware components are fully compliant with EU RoHS directive.
NOTE

Quectel UC20 Specifications

General

Brand	Quectel
Model	UC20
Category	Control Unit
Language	English