Quectel UC20 Manual page 15

USB Interface
Rx-diversity
GNSS Features
AT Commands
Real Time Clock
Network Indication
Antenna Interface
Physical Characteristics
Temperature Range
Firmware Upgrade
RoHS
NOTE
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.
UC20_Hardware_Design
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
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.
Support UMTS Rx-diversity
Gen8 of Qualcomm GNSS engine (GPS and GLONASS)
Protocol: NMEA 0183
Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT
commands.
Implemented
Two pins including NET_MODE and NET_STATUS to indicate
network connectivity status.
Include main UMTS antenna, UMTS diversity antenna, GNSS antenna
(passive).
Size: 32.0± 0.15 × 29.0± 0.15 × 2.5± 0.2mm
Weight: approx. 4.9g
Normal operation: -35° C ~ +75° C
Restricted operation: -40° C ~ -35° C and +75° C ~ +85° C
Storage temperature: -45° C ~ +90° C
USB interface (by default) or main UART interface.
All hardware components are fully compliant with EU RoHS directive.
Confidential / Released
UMTS/HSPA Module Series
UC20 Hardware Design
1)
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