Navia PN6280 User manual

PN6280_Hardware Design
Copyright © JSC NIIMA PROGRESS and NAVIA LLC
0
Progress - NAVIA PN6280
Hardware Design
User Manual
V1.0
RUSSIA
2019
PN6280_Hardware Design
GSM/WCDMA Module Series
Version：V1.0
Date：2019-06-01

PN6280_Hardware Design
Copyright © JSC NIIMA PROGRESS and NAVIA LLC
1
Notice
Some features of the product and its accessories described herein rely on the software installed,
capacities and settings of local network, and therefore may not be activated or may be limited by local
network operators or network service providers. Thus, the descriptions herein may not exactly match
the product or its accessories which you purchase. JSC NIIMA PROGRESS and NAVIA LLC reserve
the right to change or modify any information or specifications contained in this manual without prior
notice and without any liability.
Copyright
This document contains proprietary technical information which is the property of JSC NIIMA
PROGRESS and NAVIA LLC. Copying of this document and giving it to others and the using or
communication of the contents thereof, are forbidden without express authority. Offenders are liable
to the payment of damages. All rights reserved in the event of grant of patent or the registration of a
utility model or design. All specification supplied herein are subject to change without notice at any
time.
DISCLAIMER
ALL CONTENTS OF THIS MANUAL ARE PROVIDED “AS IS”. EXCEPT AS REQUIRED BY
APPLICABLE LAWS, NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
INCLUDINGBUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE, ARE MADE IN RELATION TO THE ACCURACY,
RELIABILITY OR CONTENTS OF THIS MANUAL.TO THE MAXIMUM EXTENT PERMITTED BY
APPLICABLE LAW, IN NO EVENTSHALLJSC NIIMAPROGRESS AND NAVIALLC BE LIABLE FOR
ANY SPECIAL, INCIDENTAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, OR LOSS OF
PROFITS, BUSINESS, REVENUE, DATA, GOODWILL SAVINGS OR ANTICIPATED SAVINGS
REGARDLESS OF WHETHER SUCH LOSSESARE FORSEEABLE OR NOT.

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CONTENT
1. INTRODUCTION...................................................................................................................................4
1.1 HARDWARE DIAGRAM.............................................................................................................................4
1.2 MAIN FEATURES ....................................................................................................................................4
1.3 SPECIFICATIONS ....................................................................................................................................5
1.4 INTERFACES ..........................................................................................................................................5
2. PACKAGE INFORMATION...................................................................................................................6
2.1 PIN CONFIGURATION..............................................................................................................................6
2.2 PIN DEFINITION......................................................................................................................................7
2.3 PACKAGE INFORMATION .......................................................................................................................11
2.3.1 Dimensions.................................................................................................................................11
2.3.2 Product labeling..........................................................................................................................12
2.3.3 Module size ................................................................................................................................13
2.3.4 Recommend decal......................................................................................................................13
3. INTERFACE CIRCUIT DESIGN..........................................................................................................14
3.1 POWER SECTION.................................................................................................................................14
3.1.1 Power supply..............................................................................................................................14
3.1.2 Power pin description.................................................................................................................15
3.1.3 Hardware power on/off...............................................................................................................15
3.1.4 Hardware reset...........................................................................................................................16
3.2 USIM INTERFACE ................................................................................................................................16
3.2.1 Pin description............................................................................................................................16
3.2.2 USIM application ........................................................................................................................17
3.3 USB INTERFACE..................................................................................................................................17
3.4 PCM INTERFACE .................................................................................................................................19
3.5 IIC INTERFACE.....................................................................................................................................20
3.6 UART INTERFACE................................................................................................................................20
3.6.1 Pin description............................................................................................................................20
3.6.2 UART application........................................................................................................................21
3.7 INTERACTIVE APPLICATION INTERFACE..................................................................................................22
3.8 LED INTERFACE ..................................................................................................................................23
3.8.1 LED control circuit ......................................................................................................................23
3.8.2 LED state description .................................................................................................................23
4. ELECTRICAL CHARACTERISTICS ..................................................................................................25
4.1 ELECTRICAL CHARACTERISTICS............................................................................................................25
4.2 TEMPERATURE CHARACTERISTIC..........................................................................................................25
4.3ABSOLUTE MAXIMUM POWER ...............................................................................................................26
4.4 RECOMMENDED OPERATING CONDITIONS.............................................................................................26
4.5 POWER CONSUMPTION ........................................................................................................................26
4.6 POWER SEQUENCE..............................................................................................................................27

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4.7 DIGITAL INTERFACE CHARACTERISTICS .................................................................................................28
4.8 ESD ...................................................................................................................................................28
5. RF FEATURES....................................................................................................................................30
5.1 FREQUENCY BAND...............................................................................................................................30
5.2 DATA LINK ...........................................................................................................................................31
5.3ANTENNA DESIGN ................................................................................................................................31
6. STORAGE AND PRODUCTION.........................................................................................................34
6.1 STORAGE............................................................................................................................................34
6.2 PRODUCTION.......................................................................................................................................34
6.2.1 Module confirmation and moisture .............................................................................................35
6.2.2 SMT reflow attentions.................................................................................................................36
6.2.3 SMT stencil design and the problem of less tin soldering..........................................................37
6.2.4 SMT attentions ...........................................................................................................................37
7. SAFETY INFORMATION ....................................................................................................................39

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1. Introduction
PN6280 is a LGA encapsulated HSPA wireless internet access module, which has the advantages of
fast Internet access speed, small size, light weight and high reliability. It can be widely used in various
products and devices with wireless internet access function.
1.1 Hardware Diagram
Figure 1-1 PN6280 functional architecture
1.2 Main Features
CPU
ARM Cortex-R4@481MHz

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Flash
RAM: 512Mb LPDDR1, 200 MHZ
Flash: 1Gb NAND
PN6280 frequency band
Standard
Frequency
GSM
EGSM900 MHZ
DCS1800 MHZ
WCDMA
UMTS900 MHZ
UMTS2100 MHZ
1.3 Specifications
Supply Voltage Range：3.3～4.2V（type 3.8V）
Dimensions：29.5mm * 19.5mm * 2.65mm
Package：90-pin LGA
Operation Temperature Range：-40℃～+85℃
Storage Temperature Range：-45℃～+90℃
Antenna：Main Antenna
Weight ：Approx 3.5g
1.4 Interfaces
IIC
GPIO
PCM: Digital audio interface
SIM: Support 1.8V/3V
UART: High speed UART
USB 2.0: High Speed ,480Mbps

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2. Package Information
2.1 Pin Configuration
Figure 2-1 PN6280 Pin View
A N T G N D SIM Po w er IO IIC NC O therKey P C M U SB U A R T
67 68 69 70 71 72 73 74 75
90 76
89 77
88 78
87 86 85 84 83 82 81 80 79
66
6564
63
1
2
3
4
5
6
7
8
9
1 0
1 1
G N D
P W R K E Y
R E SET
G N D
U S B _D M
U S B _D P
G N D
U S IM_D A T A
U S IM _R S T
U S IM _C L K
U S IM _V D D
4 2
4 1
4 0
3 9
3 8
3 7
3 6
3 5
3 4
3 3
3 2
GND
M A IN _ANT
GND
GND
G P IO 5 1
G P IO 5 2
N E TLIG H T
G P IO 4 6
I2 C _S C L
I2 C _S D A
GND
6 2 6 1 6 0 5 9 5 8 5 7 5 6 5 5 5 4 5 3 5 2 5 1 5 0 4 9 4 8 4 7 4 6 4 5 4 4 4 3
G N D N C N C G P IO 1 7 TX_E N G N D U A R T 0_D T R U A R T 0_T X D U A R T 0_DCD U A R T 0_R I U A R T 0_R X D U A R T 0_C T S U A R T 0_R T S G P IO 4 8 G P IO 4 7 G N D G N D VBA T VBA T G N D
1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1
G N D
PCM _C L K
PCM _S Y N C
PCM _IN
PCM _OUT
G N D
U 1 R X D
U 1 T X D
G N D
W A K E IN
G N D
L P R D B
VIO 1 8 _P M U
N C N C N C N C N C
G N D
G PIO 53

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2.2 Pin Definition
Table 2-1 PN6280 Pin description
Pin
NO.
Pin name
Type
Function Description
Power
domain
State (1)
1.
GND
G
Ground
GND
2.
PWRKEY
I
Powerkey button
0～4.2V
Open
3.
SYSRSTB
I
System reset signal
DVDD18
Open
4.
GND
G
Ground
GND
5.
USB_DM
DIO
USB port differential data line
Open
6.
USB_DP
DIO
Open
7.
GND
G
Ground
GND
8.
USIM_DATA
I/O
USIM data
DVDD18
Open
9.
USIM_RST
O
USIM reset
DVDD18
Open
10.
USIM_CLK
O
USIM clock
DVDD18
Open
11.
USIM_VDD
P
USIM output voltage
1.8/3.0V
Open
12.
GND
G
Ground
GND
13.
PCM_CLK
I/O
PCM interface clock
DVDD18
Open
14.
PCM_SYNC
I/O
PCM interface sync
DVDD18
Open
15.
PCM_IN
I/O
PCM I/F data in
DVDD18
Open
16.
PCM_OUT
I/O
PCM I/F data out
DVDD18
Open
17.
GND
G
Ground
GND
18.
U1RXD
DI
UART1 receive data input
DVDD18
Open
19.
U1TXD
DO
UART1 transmit output
DVDD18
Open
20.
GND
G
Ground
GND
21.
WAKEIN
I/O
Host to set the module into sleep or wake
up the module from sleep
DVDD18
Open

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22.
GND
G
Ground
GND
23.
LPRDB
I/O
USB download key (Reserve)
DVDD18
Open
24.
VIO18_PMU
P
1.8V output voltage
1.8V
Open
25.
NC
NC
26.
NC
NC
27.
NC
NC
28.
NC
NC
29.
NC
NC
30.
GND
G
Ground
GND
31.
GPIO53
I/O
General input/output PIN
DVDD18
Open
32.
GND
G
Ground
GND
33.
I2C_SDA
I/O
General input/output PIN. It can be used
as I2C data
DVDD18
Open
34.
I2C_SCL
I/O
General input/output PIN. It can be used
as I2C clock
DVDD18
Open
35.
GPIO46
I/O
General input/output PIN
DVDD18
Open
36.
NETLIGHT
O
Output PIN as LED control for network
status
DVDD18
Open
37.
GPIO52
I/O
General input/output PIN
DVDD18
Open
38.
GPIO51
I/O
General input/output PIN
DVDD18
Open
39.
GND
G
Ground
GND
40.
GND
G
Ground
GND
41.
MAIN_ANT
ANT
Main antenna
Open
42.
GND
G
Ground
GND
43.
GND
G
Ground
GND
44.
VBAT
P
Power supply
3.3～4.2V
VBAT
45.
VBAT
VBAT
46.
GND
G
Ground
GND

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47.
GND
G
Ground
GND
48.
GPIO47
I/O
General input/output PIN
DVDD18
Open
49.
GPIO48
I/O
General input/output PIN
DVDD18
Open
50.
UART0_RTS
DI
UART0 ready to receive
DVDD18
Open
51.
UART0_CTS
DO
UART0 clear to send
DVDD18
Open
52.
UART0_RXD
DI
UART0 receive data input
DVDD18
Open
53.
UART0_RI
DO
UART0 ring indicator
DVDD18
Open
54.
UART0_DCD
DO
UART0 data carrier detect
DVDD18
Open
55.
UART0_TXD
DO
UART0 transmit output
DVDD18
Open
56.
UART0_DTR
DI
UART0 Data terminal ready
DVDD18
Open
57.
GND
G
Ground
GND
58.
TX_EN
DO
TX Enable signal
DVDD18
Open
59.
GPIO17
I/O
General input/output PIN
DVDD18
Open
60.
NC
NC
61.
NC
NC
62.
GND
G
Ground
GND
63.
GND
G
Ground
GND
64.
GND
G
Ground
GND
65.
GND
G
Ground
GND
66.
GND
G
Ground
GND
67.
GND
G
Ground
GND
68.
GND
G
Ground
GND
69.
GND
G
Ground
GND
70.
GND
G
Ground
GND
71.
GND
G
Ground
GND
72.
GND
G
Ground
GND

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73.
GND
G
Ground
GND
74.
GND
G
Ground
GND
75.
GND
G
Ground
GND
76.
GND
G
Ground
GND
77.
GND
G
Ground
GND
78.
GND
G
Ground
GND
79.
GND
G
Ground
GND
80.
GND
G
Ground
GND
81.
GND
G
Ground
GND
82.
GND
G
Ground
GND
83.
GND
G
Ground
GND
84.
GND
G
Ground
GND
85.
GND
G
Ground
GND
86.
GND
G
Ground
GND
87.
GND
G
Ground
GND
88.
GND
G
Ground
GND
89.
GND
G
Ground
GND
90.
GND
G
Ground
GND
(1) Suggested status when not in use.
Notes：All IO ports module provides need to be out of floating in the boot process. If the IO is
pulled up by the external voltage before booting, it may cause the module not to start normally.

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Table 2-2 Pin type description
P:POWER
G:GROUND
I:INPUT
DI:DIGITAL INPUT
O:OUTPUT
DO:DIGITAL OUTPUT
ANT:ANTENNA
DIO:DIGITAL INPUT OUTPUT
NC:NOT CONNECT
2.3 Package Information
2.3.1 Dimensions
The PN6280 mechanical dimensions are described as following figure (Top view, Back view, Side
view).
Figure 2-2 Mechanical Dimensions

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2.3.2 Product labeling
Figure 2-3 Label of PN6280
Table 2-3 Description of label
Item
Description
A
Pin1 mark
B
Logo of companies
C
Module name (model)
D
QR code---include IMEI number
E
WEEE
F
IMEI number
G
SN number
H
Module description (2G/3G module)
I
QR code---include SN number
J
CE certification mark

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2.3.3 Module size
Figure 2-4 Module Size (Unit: mm)
2.3.4 Recommend decal
Figure 2-5 Recommend pad (front view, unti: mm)

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3. Interface Circuit Design
3.1 Power Section
3.1.1 Power supply
VBAT is the main power supply of the module, and the input voltage range is 3.3V to 4.2V. The
recommended voltage is 3.8V. Because the module transmit burst may cause voltage drops, the
highest peak will reach 2A. Alarge capacitor voltage is recommended to use near VBAT pins, and the
capacitor's value is the bigger the better. In order to improve the continued flow of large current, it is
recommended to use a low-impedance tantalum 470uF or larger. During layout, the capacitors are
close to the VBAT pins.
Figure 3-1 Power Supply circuit
Notes: According to the environment, please select capacitor as large value as possible;
and add 100pF, 33pF capacitors if requiring.
Add Zener close to our module. The Zener should be 5.1V/500mW, Ir<100uA
@Vr=4.2V. Ta=25℃.

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3.1.2 Power pin description
Pin number
Pin name
Description
44/45
VBAT
positive signal
1/4/7/12/17/20/22/30/32/39/40/42/43/46/47/57/
62
GND
GND
63~90
GND
GND
The Ground of power and signal need to be GND. Ground signal connection is not complete will have
an impact on the performance of the product. In addition, there are a total of 28 (63~90) heat sink and
fixed ground pad.
3.1.3 Hardware power on/off
Module second pin is the Power on/off key. Pulling down the PWRKEY continuously, the module will
boot. Releasing the PWRKEY, the module will shutdown. There is internally pulled-up resistor. If using
the power on the boot form, and the PWRKEY is grounded directly. If you do not need to power on the
boot, you can control the PWRKEY to achieve. Typical circuit is shown in figure 3-2.
Figure 3-2 Control module boot circuit

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3.1.4 Hardware reset
Module third pin is the hardware reset input. The module will power off when it receives a 20ms low
level signal. The system has an internal pull up, the typical value is 1.8V, and do not need to pull up
externally.
Figure 3-3 System Reset
3.2 USIM Interface
3.2.1 Pin description
PN6280 supports and be able to automatically detect 3.0V and 1.8V USIM card. USIM card interface
signal as shown in table 3-1.
Table 3-1 (U)SIM Pin Description
Pin NO.
Pin Name
Signal definition
Function Description
8
USIM_DATA
USIM card data pin
USIM card DATA signal, I/O signal
9
USIM_RST
USIM card reset pin
USIM card reset signal, output by the
module
10
USIM_CLK
USIM card clock pin
USIM card clock signal, output by the
module
11
USIM_VDD
USIM output voltage
USIM card power supply, output by
the module

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3.2.2 USIM application
USIM card signal group (PIN number: 8, 9, 10, 11), near the USIM card seat on the line. Please note
to increase the ESD protection device.
In order to meet the requirements of 3GPP TS 51.010-1 protocol and EMC certification, the proposed
USIM card is arranged near the position module USIM card interface, and avoid to layout too long
resulting in serious waveform distortion, affecting the signal integrity. USIM_CLK and USIM_DATA
signals are recommended to be protected. Between GND and USIM_VDD in parallel with a 1uF and
33pF capacitors, that can filter out the interference of radio frequency signals.
Figure 3-4 (U)SIM Circuit
3.3 USB Interface
USB application
The USB interface of the module conforms to the USB2.0 specification and electrical characteristics.
Support the low-speed, full-speed and high-speed three operating modes. The data exchange
between the main processor (AP) and the module is mainly completed through the USB interface.

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USB bus is mainly used for data transmission, software upgrade, module program testing. Working in
the USB mode of the high-speed line, if you need ESD design, ESD protection devices must meet the
junction capacitance value of less than 3pF, otherwise the larger junction capacitance will cause
waveform distortion, and affect the bus communication. The differential impedance of differential data
lines should be controlled at 90ohm ±10%, and lines should be protected up and down, and can’t be
crossed with other lines. USB connection circuit is as follows.
Figure 3-6 USB Circuit
Note: If you use the serial port communication, the DM/DP reserved test points
respectively in order to download software. If DM/DP is used to communicate with the
MCU, the position of the DM / DP signal near themodule needs to reserve a test point and
the DM/DP requires a series 0R resistor. The resistor is placed near the module and the
test point is placed between module and resistor.

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3.4 PCM Interface
PCM application
PN6280 provides a digital audio interface (PCM) that can be used as a PCM master device to transmit
digital voice signals. PN6280 only acts as a master device. PCM sync, PCM CLK are as output pins
and PCM sync output 16kHz synchronization signals, the PCM data support 8-bit or 16 bit data format.
We recommended codec chip is NAU8814YG. The codec chip crystal default use 1.8V power supply,
12M output active crystal. The power control pin of the PCM uses the PIN35 by default. And
NAU8814YG connected circuit from the device is shown in figure 3-7.
Figure 3-7 NAU8814YG peripheral Circuit（PN6280 as Main device）