WNC IMQ7 User manual

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User Manual
Project Name: IMQ7 Module
Author: Wistron NeWeb Corporation
Revision: 0.4
Revision Date: 2020/12/21

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Contact Information
Technical Support website
https://SupportIoT.wnc.com.tw
Company Website
www.wnc.com.tw
Revision History
Rev. #
Author
Summary of Changes
Date
0.1
WNC
First release
2020/12/09
0.2
WNC
Update FCC/IC ID
2020/12/14
0.3
WNC
Update operating voltage
2020/12/16
0.4
WNC
Update power class and FCC statement
2020/12/21

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© Wistron NeWeb Corporation
THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN IS PROPRIETARY AND IS THE
EXCLUSIVE PROPERTY OF WNC AND SHALL NOT BE DISTRIBUTED, REPRODUCED, OR
DISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION FROM WNC.
LIMITATION OF LIABILITY
THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN IS PURELY FOR DESIGN
REFERENCE AND SUBJECT TO REVISION BY WNC AT ANY TIME. NOTHING IN THIS
DOCUMENT SHALL BE CONSTRUED AS GRANTING ANY WARRANTY OR RIGHT TO USE THE
MATERIAL CONTAINED HEREIN WITHOUT WNC’S PRIOR EXPRESS WRITTEN CONSENT. WNC
SHALL NOT BE LIABLE FOR ANY USE, APPLICATION OR DEVELOPMENT DERIVED FROM THE
MATERIAL WITHOUT SUCH PRIOR EXPRESS WRITTEN CONSENT.

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Contents
Contact Information................................................................................................................. 2
Revision History........................................................................................................................ 2
Contents.................................................................................................................................... 4
1. Introduction.......................................................................................................................... 6
1.1. RF band support........................................................................................................6
1.2. Features.................................................................................................................... 6
1.3. Connection Interface................................................................................................ 7
1.4. Environmental Specifications and Certifications...................................................... 7
1.4.1. Environmental Specifications........................................................................7
1.4.2. Certifications................................................................................................. 8
1.4.3. Green Product Compliance........................................................................... 8
2. Pin Definitions...................................................................................................................... 8
2.1. LGA Module Pin Diagram..........................................................................................8
2.2. LGA Module Pin Definitions......................................................................................9
3. Electrical Specifications...................................................................................................... 14
3.1. Power supply.......................................................................................................... 14
3.2. RF Specifications..................................................................................................... 14
3.2.1. Band support...............................................................................................14
3.2.2. Bandwidth support..................................................................................... 15
3.2.3. RF transmit specifications........................................................................... 15
3.2.4. RF receiver specifications............................................................................15
3.2.5. GNSS receiver specifications....................................................................... 16

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4. Software Interface.............................................................................................................. 16
4.1. Support tools.......................................................................................................... 16
4.2. USB interface.......................................................................................................... 16
5. Mechanical..........................................................................................................................16
5.1. PCBA Form Factor................................................................................................... 16
6. Design Guide.......................................................................................................................19
6.1. Power supply...........................................................................................................19
6.2. RF connection......................................................................................................... 20
6.3. Reflow..................................................................................................................... 23
7. Labeling and Packaging...................................................................................................... 26
7.1. Labeling...................................................................................................................26
7.2. Packaging................................................................................................................ 26
7.3. MSL level.................................................................................................................28
8. Safety Recommendation....................................................................................................29
Initialisms................................................................................................................................33

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1. Introduction
The WNC IMQ7 module includes the Qualcomm MDM9205 Cat. M1 baseband, a complete
LTE RF front-end, memory, and required circuitry to fulfill requirements of 3GPP E-UTRA
(Long Term Evolution - LTE, Rel-14 specifications). The IMQ7 module provides a variety of
interfaces including USB, SPI, UART, GPIO, I2C, and USIM.
1.1. RF band support
This section lists the main features and functions that the IMQ7 module supports. Table 1-1
specifies wireless technologies supported.
Module
LTE CAT M1
LTE CAT NB2
GPRS/EGPRS
GNSS
IMQ7
√
×
×
√
Table 1-1. IMQ7 module overview
Note: √= supported, ×= not supported
1.2. Features
Feature list:
LTE 3GPP release 14
3GPP category support: LTE Cat. M1 with 1.2 Mbps for UL, 375 Kbps for DL
LTE Support Bands:B4/13
Power Class 3: 23dBm
GNSS: GPS, GLONASS
Cortex A7 microprocessor (performance enhanced)
IPv4/IPv6-supported
AT command set
LwM2M, FOTA

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SMS over NAS
Interfaces
HS USB 2.0 with integrated PHY
Dual UART interfaces (4 bit and 2 bit) for data transfer and diagnostic tools
I2C/SPI interface
USIM interface
GPIOs
ADC
PCM/I2S
1.3. Connection Interface
The IMQ7 module is LGA device. All electrical and mechanical connections are made
through the 104 pads on the bottom side of a PCB.
1.4. Environmental Specifications and Certifications
1.4.1. Environmental Specifications
The environmental specifications for both operating and storage conditions are defined in
the Table below.
Condition
Temperature Range
Remark
Normal operating
temperature range
–30 °C to 60 °C
Fully functional and in compliance with 3GPP
specifications
Extended operating
temperature range
–40 °C to 85°C
RF performance may be affected outside the
normal range, but the module will still function.
Storage
–40 °C to 85 °C
Table 1-2. Temperature range
Note: All temperatures above refer to ambient temperatures.

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1.4.2. Certifications
The IMQ7 module is certified to be compliant with GCF,FCC
regulations and standards.
1.4.3. Green Product Compliance
RoHS (2011/65/EU)
2. Pin Definitions
2.1. LGA Module Pin Diagram
The IMQ7 LGA module pin layout is illustrated below.

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Figure 2-1. LGA pad diagram (top view)
2.2. LGA Module Pin Definitions
A complete list with related details for the module pinout are listed in the Table below:
Pin No.
Pin definition/type
Voltage Level (V)
Min.
Typ.
Max.
7
GND
-
0
-

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8
GND
-
0
-
9
NC
-
-
-
10
GND
-
0
-
11
GND
-
0
-
12
GND
-
0
-
13
GND
-
0
-
14
GND
-
0
-
15
RF_1(LTE TRX)
-
-
-
16
GND
-
0
-
17
GND
-
0
-
18
GND
-
0
-
19
GND
-
0
-
20
GND
-
0
-
21
RF_2(GNSS)
-
-
-
22
GND
-
0
-
23
GND
-
0
-
24
GND
-
0
-
25
GND
-
0
-
26
GND
-
0
-
27
NC
-
-
-
28
GND
-
0
-
29
GND
-
0
-
30
GND
-
0
-

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37
VCC1
2.85
3.8
4.5
38
VCC2
2.85
3.8
4.5
39
VCC3
2.85
3.8
4.5
40
VCC4
2.85
3.8
4.5
41
VCC5
2.85
3.8
4.5
42
VCC6
2.85
3.8
4.5
43
NC
-
-
-
44
GND
-
0
-
45
GND
-
0
-
46
GPIO46
1.7
1.8
1.9
47
GPIO47
1.7
1.8
1.9
48
GPIO48
1.7
1.8
1.9
49
GPIO49
1.7
1.8
1.9
50
GND
-
0
-
51
GND
-
0
-
52
GPIO01
1.7
1.8
1.9
53
GPIO02
1.7
1.8
1.9
80
GPIO80
1.7
1.8
1.9
81
GPIO81
1.7
1.8
1.9
82
GPIO82
1.7
1.8
1.9
83
GPIO83
1.7
1.8
1.9
84
GND
-
0
-
85
GND
-
0
-

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86
USB_Dp
-
Note6
-
87
USB Detect
1.7
1.8
1.9
88
USB_Dn
-
Note6
-
89
UART2_RTS
1.7
1.8
1.9
90
NC
-
-
-
91
UART2_CTS
1.7
1.8
1.9
92
UART0_CTS
1.7
1.8
1.9
93
UART0_TX
1.7
1.8
1.9
94
UART2_TX
1.7
1.8
1.9
95
UART0_RX
1.7
1.8
1.9
96
UART2_RX
1.7
1.8
1.9
97
UART0_RTS
1.7
1.8
1.9
98
GPIO98
1.7
1.8
1.9
99
GPIO99
1.7
1.8
1.9
100
GPIO100
1.7
1.8
1.9
101
GPIO101
1.7
1.8
1.9
102
GPIO102
1.7
1.8
1.9
103
GPIO103
1.7
1.8
1.9
130
GPIO06/vGPIO Data In/AUX_ADC1
1.7
1.8
1.9
131
GPIO07
1.7
1.8
1.9
132
GNSS_EN/GPIO08
1.7
1.8
1.9
133
UIM_VCC/1.8V
1.7
1.8
1.9
134
UIM DATA
1.7
1.8
1.9

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135
UIM CLK
1.7
1.8
1.9
136
UIM RESET
1.7
1.8
1.9
137
UIM DETECT
1.7
1.8
1.9
138
RFFE3_CLK/GPIO138
1.7
1.8
1.9
139
GND
-
0
-
140
RFFE3_DATA/GPIO140
1.7
1.8
1.9
141
WWAN_STATE
1.7
1.8
1.9
142
Power on
1.7
1.8
1.9
143
WAKEUP_OUT
1.7
1.8
1.9
144
WAKEUP_IN
1.7
1.8
1.9
145
RESET
1.7
1.8
1.9
146
VREF
1.7
1.8
1.9
208
SPI_EN
1.7
1.8
1.9
209
SPI_CLK
1.7
1.8
1.9
210
SPI_MOSI
1.7
1.8
1.9
211
SPI_MISO
1.7
1.8
1.9
212
GND
-
0
-
213
GND
-
0
-
214
GND
-
0
-
215
GND
-
0
-
216
GND
-
0
-
217
GND
-
0
-
218
GND
-
0
-

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219
GND
-
0
-
220
PS_HOLD
1.7
1.8
1.9
221
Force usb boot
1.7
1.8
1.9
222
UART1_RX (UART 1)
1.7
1.8
1.9
223
UART1_TX (UART 1)
1.7
1.8
1.9
Table 2-1. Module pin definitions
3. Electrical Specifications
3.1. Power supply
The IMQ7 module receives and supplies power with the following potentials:
Direction
Vmin
Typical
Vmax
Power (37–42)
In
2.85 V
3.8 V
4.5 V
VREF
Out
1.71 V
1.8 V
1.89 V
UIM_VCC
Out
1.71 V
1.8 V
1.89 V
Table 3-1. Power supply
3.2. RF Specifications
3.2.1. Band support

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LTE CAT M1
Uplink (MHz)
Downlink (MHz)
LTE Band 4
1710–1755
2110–2155
LTE Band 13
777-787
746-756
Table 3-2. Band support
3.2.2. Bandwidth support
Band
Bandwidth
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
LTE Band 4






LTE Band 13
-
-


-
-
Table 3-3. LTE CAT-M1 Bandwidth support
3.2.3. RF transmit specifications
Band
Parameter
Unit
Min.
Typ.
Max.
LTE Band 4
Max. TX Power
10 MHz 4 RBs/QPSK
dBm
20.3
23
25.7
LTE Band 13
Max. TX Power
10 MHz 4 RBs/QPSK
dBm
20.3
23
25.7
Table 3-4. Conductive Tx output power
Note: 1. RF transmitter specifications are defined at the LGA pad.
2. The IMQ7 series meets 3GPP TS 36.521-1test standards.

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3.2.4. RF receiver specifications
LTE Band
Items
Parameter
Unit
Typ.
3GPP limit
LTE Band 4
RX Sensitivity
5 MHz with 4 RBs
dBm
-102.3
LTE Band 13
RX Sensitivity
5 MHz with 4 RBs
dBm
–99.3
Table 3-5. Conductive Rx sensitivity-3GPP
Note: 1. RF receiver specifications are defined at the LGA pad.
2. The IMQ7 series meets 3GPP TS 36.521-1 test standards.
3.2.5. GNSS receiver specifications
One GNSS SAW filter, LNA need to be used between the module and antenna. in
4. Software Interface
4.1. Support tools
The IMQ7 module is compatible with the following support tools:
WNC IMQ7 Connection Manager (WNCCM) (TBD)
4.2. USB interface
The IMQ7 module supports 3GPP’s standard AT commands and proprietary AT commands.

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5. Mechanical
5.1. PCBA Form Factor
The IMQ7 module has the same dimensions as the PCBA:
15.5 mm × 21.5 mm × 2.4 mm(typical)
Figure 5-1. PCBA dimensions

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Figure 5-2. Pad dimensions (bottom view)

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Figure 5-3. Recommend PCB footprint

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6. Design Guide
6.1. Power supply
The LTE module power input is VCC. The internal power chipset will transform VCC to other
power levels.
Power
Pin Name
Pads
Description
Voltage Level (V)
Min.
Typ.
Max.
VCC
VCC1 to VCC6
Nos. 37 to 42
Main Power Supply
2.85
3.8
4.5
Table 6-1. Power supply voltage level
The IMQ7 module includes an integrated power manager that enables single and direct
voltage supply from the battery and reduces the overall bill of materials. The typical voltage
of 3.8V is recommended.
Schematic suggestion: We highly recommend separating module power supply into two
paths to maintain clean power as shown below for TX spurious performance. The VPH_PWR
is for baseband and RF circuits.
Layout Suggestion: 22μF, 0.1uF, 12pF and 8pF capacitors must be placed as close to VCC
pins as possible. Each power trace must possess sufficient line width to
withstand its respective current load, as listed in the table below: