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Neoway N21 Series User Manual
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N21
Hardware User Guide
Copyright © Neoway
T
echnology Co., Lt
d.
All right
s reserved.
37
B
Abbreviation
Abbreviation
English Full Name
ADC
Analog-Digital Converter
CPU
Central Processing Unit
DAC
Digital-
to
-Analog Converter
DCE
Data Communication Equipment
DTE
Data Terminal Equipment
PTW
Paging Time Window
PSM
Power Save Mode
DRX
Discontinuous Reception
eDRX
Extended Discontinuous Recepti
on
EMC
Electromagnetic Compatibility
EMI
Electro Magnetic Interference
ESD
Electronic Static Discharge
ETSI
European Telecommunication Standard
FDMA
Frequency Division Multiple Access
IC
Integrated Circuit
IMEI
International Mobile Equipment Identity
LCD
Liquid Crystal Display
LED
Light Emitting Diode
MS
Mobile Station
PCB
Printed Circuit Board
RAM
Random Access Memory
RF
Radio Frequency
ROM
Read
-only Memory
TVS
Transient Voltage Suppressor
45
47
Table of Contents
Table of Contents
3
About this Document
8
Scope
8
Audience
8
Revision History
8
Symbols and Conventions
9
Related Documents
9
About N21
10
Product Overview
10
Block Diagram
10
Table 1-1 Variants and Bands
10
Basic Features
11
Figure 1-1 Block Diagram
11
Module Pins
13
Pad Layout
13
Figure 2-1 Pin Definition of N21
13
Pin Description
14
Table 2-1 IO Definition
14
Table 2-2 Pin Description
14
Application Interfaces
16
Power Supply
16
Vbat
16
Figure 3-1 Recommended Circuit Design 1
17
Figure 3-2 Recommended Schematic Design 2
18
Vddio_2P8
19
Control Interfaces
19
Pwrkey_N
19
Figure 3-3 Reference Design of Startup Controlled by Button
20
Figure 3-4 Reference Design of Startup Controlled by MCU
20
Figure 3-5 Reference Design of Automatic Start Once Powered up
20
Figure 3-6 Startup Timing
21
Reset_N
22
Figure 3-7 Shutdown Timing
22
Figure 3-8 Reset Controlled by Button
22
Peripheral Interfaces
23
Figure 3-9 Reset Circuit with Triode Separating
23
Figure 3-10 Reset Timing of N21
23
Uart
24
Figure 3-11 UART Connection
24
Figure 3-12 Recommended Level Shifting Circuit 1
25
Figure 3-13 Recommended Level Shifting Circuit 2
25
Usim
27
Figure 3-14 Recommended Level Shifting Circuit 3
27
Figure 3-15 Reference Design of USIM Card Interface
28
RF Interface
29
Antenna Design
29
Figure 3-16 L Network
29
Figure 3-17 T Network
29
Figure 3-18 Pi Network
30
Figure 3-19 Recommended RF PCB Design
30
Antenna Assembling
31
Figure 3-20 Specifications of MM9329-2700RA1
31
Figure 3-21 RF Connections
31
Other Interfaces
32
Wakeup
32
Net_Light
32
Figure 3-22 Reference Design of WAKEUP
32
Figure 3-23 Driving LED Directly
32
Status
33
Figure 3-24 Driving LED with a Triode
33
Electric Feature and Reliability
34
Nominal Values
34
Current Features
34
Table 4-1 Operating Conditions of N21
34
Table 4-2 Current Consumption of N21 (Typical)
34
Temperature Feature
35
ESD Protection
35
Table 4-3 Temperature Features of N21
35
Table 4-4 N21 ESD Protection
35
RF Features
36
Operating Bands
36
TX Power and RX Sensitivity
36
Table 5-1 Operating Bands of N21
36
Table 5-2 RF TX Power of N21
36
Table 5-3 RX Sensitivity of N21 Cat NB1
36
Mechanical Features
37
Dimensions
37
Label
37
Figure 6-1 N21 Dimensions (Unit: MM)
37
Package
38
Mounting N21 Onto Application Board
40
Bottom Dimensions
40
Application Foot Print
41
Stencil
41
Solder Paste
41
SMT Profile
42
Safety Recommendations
43
A Conformity and Compliance
44
Approvals
44
Chinese Notice
44
CCC Class a Digital Device Notice
44
Environmental Protection Notice
44
American Notice
44
Modify
45
FCC Class a Digital Device Notice
45
FCC Class B Digital Device Notice
45
B Abbreviation
46
4
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Neoway N21 Series Specifications
General
Brand
Neoway
Model
N21 Series
Category
Control Unit
Language
English
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