UMTS/HSPA Module Series
UC20 Hardware Design
UC20_Hardware_Design Confidential / Released 14 / 82
2)
. When the module works within this restricted temperature range, RF performance might degrade. For
example, the frequency error or the phase error would increase.
2.3. Functional Diagram
The following figure shows a block diagram of UC20 and illustrates the major functional parts.
Power management
Baseband
DDR+NAND flash
Radio frequency
Peripheral interface
--UART interface
--USIM card interface
--USB interface
--PCM interface
--ADC interface
--Status indication
--Control interface
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 GSM/UMTS antenna, UMTS diversity antenna and
GNSS antenna.
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
2)
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
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