Quectel EC20 - Functional Diagram

LTE Module Series
EC20 Mini PCIe Hardware Design
EC20_Mini_PCIe_Hardware_Design Confidential / Released 12 / 36
1. “*” means this function is under development.
2. “
▲
” means when the module works within this temperature range, RF performance might degrade.
For example, the frequency error or the phase error may increase.
2.4. Functional Diagram
The following figure shows a block diagram of EC20 Mini PCIe.
EC20
Module
PCM&I2C
Mini PCI Express
Interface
USB
USIM
W_DISABLE#
PERST#
LED_WWAN#
Main
Antenna
Interface
VCC
Main
Antenna
VBAT
GNSS
Antenna
Interface
GNSS
Antenna
Boost
Circuit
Diversity
Antenna
Interface
Diversity
Antenna
USIM Holder
(Optional)
RI
UART
DTR
Figure 1: Functional Diagram
Protocol: NMEA 0183
Rx-diversity
Support LTE/UMTS Rx-diversity
AT Commands
Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT
commands
Physical Characteristics
Size: 51.0mm × 30.0mm × 4.9mm
Weight: approx. 9.8g
Temperature Range
Normal operation: -30°C ~ +70°C
Restricted operation: -40°C ~ -30°C and +70°C ~ +80°C
▲
Storage temperature: -45°C ~ +90°C
Firmware Upgrade
USB interface
RoHS
All hardware components are fully compliant with EU RoHS directive
NOTES
Quectel
Confidential