SimCom SIM7020E - Accessories Installation; AT Command Communication

1 Introduction
This document describes SIM7020 hardware interface in great detail. The document can help
customer to quickly understand SIM7020 interface specifications, electrical and mechanical details.
With the help of this document and other SIM7020 application notes, customer guide, customers can
use SIM7020 to design various applications quickly.
1.1 Product Outline
The SIM7020 series modules support LTE CAT-NB1.
With a tiny configuration of 17.6*15.7*2.3mm, SIM7020 can meet almost all the space requirements
in customers’ applications, such as smart phone, PDA and other mobile devices. And the physical
dimension is compatible with the packaging of SIM800C.
Table 1: SIM7020 frequency bands and air interface
Standard
Freque
ncy
Variants
SIM7020C SIM7020E
HD-FDD
B1


B3


B5


B8


B20

B28

1.2 Hardware Interface Overview
The interfaces are described in detail in the next chapters include:
 Power Supply
 USB Interface
 UART Interface
 SIM Interface
 ADC
 Power Output
 GPIOs
 Antenna Interface
1.3 Hardware Block Diagram
The block diagram of the SIM7020 module is shown in the figure below.