Name: Neoway N21 Series
Brand: Neoway
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N21

Hardware User Guide

Figure 3-9 Reset circuit with triode separating

VDD_EXT

MCU_RESET

N21 module

RESET_N

To reset the module through high level, refer to Figure 3-4.

In Figure 3-9, VDD_EXT=3.3V, R1=47 kΩ, R2=4.7 kΩ. 2.8V is recommended for supply voltage at the

base of Q1.

Figure 3-10 shows the reset timing of N21.

Figure 3-10 Reset timing of N21

VBAT

Inactive

Active

200ms

RESET_N

UART

3.3 Peripheral Interfaces

N21 provides various peripheral interfaces.

Table of Contents3
About this Document8
Scope8
Audience8
Revision History8
Symbols and Conventions9
Related Documents9
About N2110
Product Overview10
Block Diagram10
Table 1-1 Variants and Bands10
Basic Features11
Figure 1-1 Block Diagram11
Module Pins13
Pad Layout13
Figure 2-1 Pin Definition of N2113
Pin Description14
Table 2-1 IO Definition14
Table 2-2 Pin Description14
Application Interfaces16
Power Supply16
Vbat16
Figure 3-1 Recommended Circuit Design 117
Figure 3-2 Recommended Schematic Design 218
Vddio_2P819
Control Interfaces19
Pwrkey_N19
Figure 3-3 Reference Design of Startup Controlled by Button20
Figure 3-4 Reference Design of Startup Controlled by MCU20
Figure 3-5 Reference Design of Automatic Start Once Powered up20
Figure 3-6 Startup Timing21
Reset_N22
Figure 3-7 Shutdown Timing22
Figure 3-8 Reset Controlled by Button22
Peripheral Interfaces23
Figure 3-9 Reset Circuit with Triode Separating23
Figure 3-10 Reset Timing of N2123
Uart24
Figure 3-11 UART Connection24
Figure 3-12 Recommended Level Shifting Circuit 125
Figure 3-13 Recommended Level Shifting Circuit 225
Usim27
Figure 3-14 Recommended Level Shifting Circuit 327
Figure 3-15 Reference Design of USIM Card Interface28
RF Interface29
Antenna Design29
Figure 3-16 L Network29
Figure 3-17 T Network29
Figure 3-18 Pi Network30
Figure 3-19 Recommended RF PCB Design30
Antenna Assembling31
Figure 3-20 Specifications of MM9329-2700RA131
Figure 3-21 RF Connections31
Other Interfaces32
Wakeup32
Net_Light32
Figure 3-22 Reference Design of WAKEUP32
Figure 3-23 Driving LED Directly32
Status33
Figure 3-24 Driving LED with a Triode33
Electric Feature and Reliability34
Nominal Values34
Current Features34
Table 4-1 Operating Conditions of N2134
Table 4-2 Current Consumption of N21 (Typical)34
Temperature Feature35
ESD Protection35
Table 4-3 Temperature Features of N2135
Table 4-4 N21 ESD Protection35
RF Features36
Operating Bands36
TX Power and RX Sensitivity36
Table 5-1 Operating Bands of N2136
Table 5-2 RF TX Power of N2136
Table 5-3 RX Sensitivity of N21 Cat NB136
Mechanical Features37
Dimensions37
Label37
Figure 6-1 N21 Dimensions (Unit: MM)37
Package38
Mounting N21 Onto Application Board40
Bottom Dimensions40
Application Foot Print41
Stencil41
Solder Paste41
SMT Profile42
Safety Recommendations43
A Conformity and Compliance44
Approvals44
Chinese Notice44
CCC Class a Digital Device Notice44
Environmental Protection Notice44
American Notice44
Modify45
FCC Class a Digital Device Notice45
FCC Class B Digital Device Notice45
B Abbreviation46

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Neoway N21 Series Specifications

General

Brand	Neoway
Model	N21 Series
Category	Control Unit
Language	English

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Neoway N21 Series User Manual

Table of Contents

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Neoway N21 Series Specifications

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