Quectel EC20 Mini PCIe 4G Module User Manual

This manual provides usage instructions for the Quectel EC20 Mini PCIe 4G module, covering power design, initialization, AT commands, and GPS configuration.

Quectel EC20 Mini PCIe 4G Module User Manual - cover page
Brand
Quectel
Category
Other Electronics
Document type
User Manual
Language
Chinese
Pages
20
File format
PDF
File size
1 MB
Published
18 October, 2026
Updated
18 October, 2026
MD5 checksum
C6D8100F8B6A60862812EA54B890AB6E
PDF
Quectel EC20 Mini PCIe 4G Module User Manual PDF

About this manual

This document is a user manual for the Quectel EC20 Mini PCIe 4G module. It details the recommended procedures for powering on and off the module, initializing it via AT commands, and designing the USB and SIM card circuits. The guide also covers application flows for SMS, voice calls, and TCP/IP data transmission using external protocol stacks. This manual is written in Chinese.

What's inside

  • Recommended Power On/Off Flow
  • Recommended Initialization Flow
  • Recommended SMS Flow
  • Voice Call Flow
  • TCP/IP Data Transmission
  • HTTP Protocol Usage
  • GPS Satellite Positioning

Specifications

Network SupportLTE, UMTS, GSM/GPRS
Maximum Upload Rate50Mbps
Maximum Download Rate100Mbps
Operating Voltage3.3-4.3V
Recommended Voltage3.8V
Recommended LDO Current1.6A
Recommended Baud Rate115200

Frequently asked questions

What is the recommended operating voltage for the module?

The recommended operating voltage is 3.8V, with a working range of 3.3-4.3V.

What is the recommended baud rate for AT commands?

The recommended baud rate is 115200.

How do you check the SIM card status using AT commands?

Send the command AT+CPIN? to check the status, which should return READY.

How do you query the module model number?

Send the command AT+CGMM, which returns EC20.

Download PDF (1 MB)