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SimCom SIM800 User Manual
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Smart Machi
ne Smart Decisi
on
SIM8
00_Hardw
are Design
_V1.10
58
201
8-08-
13
Table
47
: Operating frequencies
Frequency
Receive
Transmit
Channel
GSM850
869
～
894M
Hz
824
～
849M
Hz
128
～
251
EGS
M900
925
～
960M
Hz
880
～
915M
Hz
0
～
124 , 975
～
1023
DCS1800
1805
～
1880M
Hz
1710
～
17
85MHz
512
～
885
PCS1900
1930
～
1990M
Hz
1850
～
1910M
Hz
512
～
810
57
59
Table of Contents
Default Chapter
3
Table of Contents
3
1 Introduction
10
2 SIM800 Overview
10
SIM800 Key Features
10
Operating Modes
12
SIM800 Functional Diagram
13
3 Package Information
14
Pin out Diagram
14
Pin Description
15
Package Dimensions
18
4 Application Interface
20
Power Supply
20
Power Supply Pin
22
Monitoring Power Supply
22
Power On/Off SIM800
22
Power on SIM800
22
Power off SIM800
24
Reset Function
25
Power Saving Mode
26
Function Mode
26
Sleep Mode (AT+CSCLK=1)
27
Wake up SIM800 from Sleep Mode (AT+CSCLK=1)
27
RTC Backup
27
Serial Port and USB Interface
28
Function of Serial Port
29
Serial Port
29
USB Interface
31
Software Upgrade and Debug
32
RI Behaviors
33
Audio Interfaces
34
Speaker Interfaces Configuration
35
Microphone Interfaces Configuration
35
Audio Electronic Characteristic
36
Tdd
36
Bluetooth
36
SIM Card Interface
37
SIM Card Application
37
SIM Card Design Consideration
38
Design Considerations for SIM Card Holder
38
PCM Interface
40
PCM Interface
41
Keypad Interface
41
I2C Bus
44
General Purpose Input/Output (GPIO)
44
Adc
45
Pwm
45
Network Status Indication
46
Operating Status Indication
47
Kpled
47
RF Synchronization Signal
48
Antenna Interface
48
GSM Antenna Interface
49
Bluetooth Antenna Interface
50
5 PCB Layout
51
PIN Assignment
51
Principle of PCB Layout
51
Antenna
51
Power Supply
51
SIM Card Interface
51
Audio Interface
52
Others
52
Recommended PCB Layout
52
6 Electrical, Reliability and Radio Characteristics
53
Absolute Maximum Ratings
53
Recommended Operating Conditions
53
Digital Interface Characteristics
53
SIM Card Interface Characteristics
54
SIM_VDD Characteristics
54
VDD_EXT Characteristics
54
VRTC Characteristics
54
Current Consumption (VBAT=4V)
55
Electro-Static Discharge
56
Radio Characteristics
56
Module RF Receive Sensitivity
57
Module Operating Frequencies
57
7 Manufacturing
59
Top and Bottom View of SIM800
59
Typical Solder Reflow Profile
59
The Moisture Sensitivity Level
60
Baking Requirements
60
8 Packaging
61
9 Appendix
63
Related Documents
63
Terms and Abbreviations
64
Safety Caution
66
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SimCom SIM800 Specifications
General
Brand
SimCom
Model
SIM800
Category
Control Unit
Language
English
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