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Quectel UC20

Quectel UC20
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UC20 Hardware Design
UMTS/HSPA Module Series
Rev. UC20_Hardware_Design_V1.2
Date: 2014-01-13
www.quectel.com

Table of Contents

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Quectel UC20 Specifications

General IconGeneral
CategoryControl Unit
Form FactorLGA
Operating Temperature-40°C to +85°C
Storage Temperature-45°C to +90°C
GSM850/900/1800/1900 MHz
SIM Card Interface1.8V/3V
Cellular TechnologyUMTS
UMTS850/900/1900/2100 MHz
InterfaceUART, USB, GPIO, I2C
Antenna InterfaceDiversity
ProtocolsTCP/IP, UDP, FTP, HTTP, MQTT
CertificationsCE, FCC, PTCRB, GCF, IC, NCC, RCM, ANATEL

Summary

Introduction

Safety Information

Outlines essential safety precautions for users and operators when handling and using the UC20 module.

Application Interface

Pin Description: Power, Control, USB

Describes pins for Power Supply, Turn On/Off, Status Indication, and USB interface.

Pin Description: USIM, ADC

Details pin definitions for USIM card and ADC interfaces.

Pin Description: UART Interfaces

Covers pin definitions for the main and debug UART interfaces.

Pin Description: RF, PCM, I2 C

Details pin definitions for RF, PCM audio, and I2C communication interfaces.

Pin Description: Other & Reserved Pins

Describes other functional pins like WAKEUP_IN and reserved pins.

Power Supply Pins and Filtering

Identifies VBAT and GND pins and provides guidance on managing voltage drops.

Power Supply Reference Design

Presents a reference circuit design for a +5V input power source.

Module Turn-on Procedure

Explains how to turn on the module using the PWRKEY pin, including circuits and timing.

Module Turn-off Procedures

Details procedures for turning off the module via PWRKEY, AT command, and automatic shutdown.

UART Level Translation & RS232

Provides reference circuits for translating UART interfaces and RS-232 level matching.

GNSS Receiver

GNSS Performance Metrics

Lists key GNSS performance parameters such as sensitivity, TTFF, and accuracy.

Antenna Interface

Electrical, Reliability and Radio Characteristics

Absolute Maximum Ratings

Lists the absolute maximum ratings for power supply and voltage on various pins of the module.

Power Supply Ratings & Temperature

Specifies power supply ratings and details operating temperature ranges for the UC20 module.

Module Current Consumption

Provides current consumption values for the module in various states like OFF, Sleep, Idle, and Data Transfer.

RF Output Power & Receiving Sensitivity

Lists RF output power and conducted RF receiving sensitivity specifications.

Electrostatic Discharge Characteristics

Details the electrostatic discharge (ESD) characteristics for module interfaces.

Mechanical Dimensions

Storage and Manufacturing

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