Functional Diagram - Quectel EC21 Series Hardware Design

Firmware Upgrade
RoHS

2.3. Functional Diagram

The following figure shows a block diagram of EC21 series and illustrates the major functional parts.
Power management

 Baseband
 DDR+NAND flash
Radio frequency

 Peripheral interfaces
EC21_Series_Hardware_Design
USB 2.0 interface or DFOTA
All hardware components are fully compliant with EU RoHS directive
Figure 1: Functional Diagram
LTE Standard Module Series
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