Midea MT7697N User manual

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Midea IoT
Module User Mannual
Manufacturer name: Guangdong Midea Refrigeration Equipment co. LTD
Module name: MT7697N Small Size Wi-Fi & Bluetooth Module
Model specification: MM3U21150Z
Material code: XXXXXXXXXXXXXX
Preparation:
Sign:
Review:
This document is confidential, and all information contained in it
shall be interpreted by midea IoT company. All unauthorized and
permitted copying shall not be recognized and prohibited.
Midea IoT
Address: 3rd floor, building 4, midea global innovation center, beijiao town, shunde district, foshan
city, guangdong province
Tel:

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Index
Features..............................................................................................................................................3
1. Product Overview................................................................................................................3
2. Top View................................................................................................................................5
3. RF Characteristics................................................................................................................5
3.1 Transmission and Reception Characteristics.................................................... 5
3.2 Characteristics of the Module Antenna..............................................................9
4. Product Structure Diagram............................................................................................ 10
4.1 PCB Size.....................................................................................................................10
4.2 Line Drawings.......................................................................................................... 11
4.3 Label Requirements............................................................................................... 12
5. Power Consumption Description................................................................................. 14
6. Electrical Parameters........................................................................................................14
7. Compliance with Standards and Certification.......................................................... 15
8. Precautions for Use.......................................................................................................... 16

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1、Product Overview
MM3U21150Z wireless module is a fully functional, highly integrated, low power
consumption dedicated Wi-Fi & Bluetooth module for the Internet of things. It
supports IEEE802.11 b/g/n protocol, also embedded IPV4, TCP, UDP, DNS, HTTP and
other complete network protocol, so that the terminal in the Internet of things
applications more reliable, convenient and easy to use.
MM3U21150Z core chip adopts the MT7697N single chip scheme of Media corp.
The chip is highly integrated with CPU, PMU, RAM, T/R SW, LNA, PA and other major
parts, thus greatly reducing the power consumption of the whole machine. The module
adopts the integrated three-dimensional metal antenna design, which can not only
reduce the cost of the antenna for customers, but also save the assembly space of the
antenna, greatly reduce the area of the board, and make the product more competitive.
At present, the module provides a complete serial port interface function to
communicate with the device, and can connect the cloud and the device through the
serial port and the mobile client.
The module has the following characteristics:
Support IEEE 802.11 b/g/n protocol
Supports 20MHz and 40MHz bandwidth in the 2.4ghz band
Support bluetooth BLE 4.2
The module has a built-in metal antenna
Low power listening mode
Both up and down theoretically support a connection rate of 150Mbps
Support encryption protocols: WFA, WPA, WPA2, WPS2.0
Support IPV4, TCP, UDP, DNS, HTTP and other network protocols

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2、Top view
Positive figure
On the back of the figure

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3、Radio frequency characteristics
3.1 transmission and reception characteristics
Support IEEE 802.11 b/g/n standard;For parameters such as transmitting power,
receiving sensitivity, EVM and distribution, a more stringent standard than the IEEE
specification is sought. Please refer to the attached table for the specifications.
Table 1: Wi-Fi 2.4ghz Band RF Specifications
TX Characteristics
Min.
Typ.
Max.
The Unit
1. The Frequency range
2400
-
2483.5
MHz
2. The Output power
1 Mbps CCK
16
dBm
11 Mbps CCK
16
dBm

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6 Mbps OFDM
15
dBm
54 Mbps OFDM
13
dBm
HT20, MCS0
15
dBm
HT20, MCS7
13
dBm
HT40, MCS0
15
dBm
HT40, MCS7
13
dBm
3. The TX EVM entry
6 Mbps OFDM
- 5
The dB
54 Mbps OFDM
- 25
The dB
HT20, MCS 0
- 5
The dB
HT20, MCS 7
27 -
The dB
HT40, MCS 0
- 5
The dB
HT40, MCS 7
27 -
The dB
RX Characteristics
Min.
Typ.
Max.
The Unit
1. The Frequency range
2400
-
2483.5
MHz
2. Minimum Input Level Sensitivity
1) 1 MBPS (FER) ≦8% CCK
- 82.
dBm
2) 2 MBPS (FER) ≦8% CCK
- 80.
dBm
3) 5.5 Mbps (FER) ≦8% CCK
- 78.
dBm
4) 11 MBPS (FER) ≦8% CCK
- 76.
dBm
5) BPSK rate 1/2, 6 Mbps OFDM
- 82.
dBm
6) BPSK rate 3/4, 9 Mbps OFDM
- 81.
dBm
7) QPSK rate 1/2, 12 Mbps OFDM
- 79.
dBm
8) QPSK rate 3/4, 18mbps OFDM
- 77.
dBm
9) 16QAM rate 1/2, 24mbps OFDM
- 74.
dBm
10) 16QAM rate 3/4, 36 Mbps OFDM
- 70.
dBm
11) 64QAM rate 1/2,48mbps OFDM
- 66.
dBm
12) 64QAM rate 3/4, 54mbps OFDM
- 65.
dBm
3. RX Sensitivity BW=20MHz Mixed

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mode 800ns Guard Interval non-stbc
1)MCS 0, BPSK rate 1/2
- 82.
dBm
2)MCS 1, QPSK rate 1/2
- 79.
dBm
3)MCS 2, QPSK rate 3/4
- 77.
dBm
4)MCS 3, 16QAM rate 1/2
- 74.
dBm
5)MCS 4, 16QAM rate 3/4
- 70.
dBm
6)MCS 5, 64QAM rate 2/3
- 66.
dBm
7)MCS 6, 64QAM rate 3/4
- 65.
dBm
8)MCS 7, 64QAM rate 5/6
- 64.
dBm
4. RX Sensitivity BW=40MHz Mixed
mode 800ns Guard Interval
1)MCS 0, BPSK rate 1/2
- 79.
dBm
2)MCS 1, QPSK rate 1/2
- 76.
dBm
3)MCS 2, QPSK rate 3/4
- 74.
dBm
4)MCS 3, 16QAM rate 1/2
- 71.
dBm
5)MCS 4, 16QAM rate 3/4
- 67.
dBm
6)MCS 5, 64QAM rate 2/3
- 63.
dBm
7)MCS 6, 64QAM rate 3/4
- 62.
dBm
8)MCS 7, 64QAM rate 5/6
- 61.
dBm
5. Maximum Input Level (FER = 10%)
6 Mbps OFDM
- 20
dBm
54 Mbps OFDM
- 20
dBm
The MCS 0
- 20
dBm
The MCS 7
- 20
dBm
Table 2: Blutooth LE RF Specifications
TX Characteristic
Min.
Typ.
Max.
The Unit
1. The Frequency range
2400
-
2483.5
MHz
2. The Output power
0
10
dBm

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3. Carrier Frequency Offset and Drift
1) the Frequency Offset
- 150.
150
KHz
2) Frequency Drift
- 50
50
KHz
3) Max Drift Rate
- 20
20
Hz/us
4. The Modulation Characteristic
Delta f1avg
225
275
KHz
Delta f2max
185
KHz
Delta f1avg/delta f2avg
0.8
0.94
Hz/Hz
5. The In - band Spurious Emission
Plus or minus 2 m Offset
- 20
dBm
> plus or minus 3 MHZ offset
- 30
dBm
RX Characteristic
Min.
Typ.
Max.
The Unit
1. The Frequency range
2400
-
2483.5
MHz
2. The Receiver Sensitivity
- 95.
dBm
3. The C/I Co - channel
6
21
The dB
4. The C/I 1 MHZ
7 -
15
The dB
5. C/I 2 MHZ
- 30
- 17
The dB
6. The C/I 3 MHZ or higher
- 33
27 -
The dB
7. C/I Image channel
- 20
9 -
The dB
8 C/I Image 1 MHZ
- 30
- 15
The dB
9. Intel - modulation
- 50
- 35
dBm
10. Out-of-band blocking
30 MHZ to 2000 MHZ
- 30
dBm
2001 MHZ to 2339 MHZ
- 35
dBm
2501 MHZ to 3000 MHZ
- 35
dBm
3001 MHZ to 12.75 GHz
- 30
dBm

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3.2 characteristics of the module antenna
The passive performance of the antenna of the Wi-Fi & Bluetooth module should
meet the following requirements (passive performance can only be used as a reference,
and the antenna performance test is mainly based on the active throughput test) :
parameter
In 2.4g frequency band: 2400MHz~ 2483.5mhz
Return loss
< - 10 db
The efficiency of
> 40%

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4. Product structure diagram
4.1 PCB size
Thickness of module plate: 1.0mm
Tolerance: + / - 0.2 mm

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4.2 line drawings
The
serial
num
ber
tag
Wi-Fi module end pin
description
Home appliance end
pin description
1
V
The VCC power supply
The VCC power supply
2
R
RXD module receives
TXD appliance
delivery
3
T
TXD module send
Reception of RXD
appliances
4
GND
symbol
GND to
GND to

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4.3 label requirements
Label printing requirements:
Label size is 14*11mm, label material is white, Song typeface; The dimension of the QR
code is 8*8mm.
QR code content:
The content of the QR code is shown in the following table.
QR code content
Field
Characters
in length
note
The initial
code
4
Fixed content as "MAC:"
The MAC
address
12
Fixed as "XXXXXXXXXXXX"

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Production
information
26
If the content is less than 26 characters, fill in the
front with the character "X"
Factory code (2 a) + job number (8) + production
date (6th) + small software version number (6) +
enterprise code (4 digits) : "01
xxxxxxxx1608020001090000"
Software
version
number
12
Fixed as "XXXXXXXXXXXX"
The power
supply
4
Fixed content as "3.3v" or "5.0v"
current
5
Fixed content as "500mA"
Note:
Starting code (4 bits) : MAC:
MCA address (12 bits) : XXXXXXXXXX
Production information (bit 26) : 01 XXXXXXXX 160919 000109 0000
Position 1 and 2: represent the manufacturing plant
Position 3-10: represents the job number of the manufacturing plant
Bit 11~16: production date, such as September 19, 2016 marked 160919
Bits 17 to 22: software minor version Numbers
No. 23-26: enterprise code, midea's internal business department is "0000"
Non-american enterprise code according to the software code.
Software version (12 bits) : XXXXXXXXXXXX
Power supply (4-bit) : working voltage of the module
Current (5 bits) : 500mA

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5. Power consumption description
The State
The Average
current in 2 min
(mA)
Peak current (mA)
in
Max current in 2
min (mA)
Min current in 2
Min (mA)
Idle
80 or less
100 or less
100 or less
80 or less
The STA
80 or less
800 or less
800 or less
80 or less
AP
80 or less
800 or less
800 or less
80 or less
6. Electrical parameters
Power supply parameters:
Under 5V working power supply:
Symbol
parameter
The
minimum
value
Typical
values
The
maximum
unit
VDD
The power
input
4.5
5
5.5
V
(ripple control within 100mv)
3.3v Operating Power:
Symbol
parameter
The
minimum
value
Typical
values
The
maximum
unit
VDD
The power
input
3.135
3.3
3.465
V
(ripple control within 100mv)

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Communication serial port level parameters:
Under 5V working power supply:
Symbol
parameter
The
minimum
value
Typical
values
The
maximu
m
unit
VIH
High Level Input Voltage
4.5
5
VDD
V
VIL
Low Level Input Voltage
0.3
-
0.3
V
VOH
High Level Output Voltage
4.5
5.0
VDD
V
VOL
Low Level Output Voltage
0
-
0.4
V
3.3v Operating Power:
Symbol
parameter
The
minimum
value
Typical
values
The
maximu
m
unit
VIH
High Level Input Voltage
3.135
3.3
VDD
V
VIL
Low Level Input Voltage
0.3
-
0.3
V
VOH
High Level Output Voltage
3.135
3.3
VDD
V
VOL
Low Level Output Voltage
0
-
0.4
V
7. Compliance with standards and certification
The Wi-Fi & Bluetooth module shall be certified by the state radio administration
of the ministry of industry and information technology of the People's Republic of
China.

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8. Precautions for use
The Wi-Fi & Bluetooth module exposed in the air (the core board inside the
module or the whole composed of the core board and the base board) shall at least
meet the service environmental conditions of general consumer electronic products,
including but not limited to:
Working temperature: - 20 ~ 85 ℃
Storage temperature: - 20 ~ 85 ℃
Working humidity: 0~95 %RH
Storage humidity: 0~98 %RH
Tolerance - 20 / + 85 ℃, every 2h a cycle, thermal shock, under the impact of the
cycle of at least 20 don't appear dysfunction or performance degradation, no
significant tin crack phenomenon.
When working for a long time, the temperature rise of the circuit components
should meet the requirements of their own specifications.
To simulate the transportation process and home application scenarios, the module
should be able to withstand a certain degree of mechanical impact and drop.
Through certain protective means, Wi-Fi & Bluetooth module can have higher
environmental adaptability.When designing a Wi-Fi & Bluetooth module, the
performance, size and process margin required for the implementation of protection
measures should be reserved.
FCC Certification Requirements.
According to the definition of mobile and fixed device is described in Part 2.1091(b), this device
is a mobile device.
And the following conditions must be met:
1. This Modular Approval is limited to OEM installation for mobile and fixed applications only.
The antenna installation and operating configurations of this transmitter, including any
applicable source-based time- averaging duty factor, antenna gain and cable loss must satisfy
MPE categorical Exclusion Requirements of 2.1091.
2. The EUT is a mobile device; maintain at least a 20 cm separation between the EUT and the
user’s body and must not transmit simultaneously with any other antenna or transmitter.

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3.A label with the following statements must be attached to the host end product: This device
contains FCC ID: 2ADQO3U21150Z.
4.To comply with FCC regulations limiting both maximum RF output power and human
exposure to RF radiation, maximum antenna gain (including cable loss) must not exceed:
BT/WIFI: <1dBi
5. This module must not transmit simultaneously with any other antenna or
transmitter
6. The host end product must include a user manual that clearly defines operating
requirements and conditions that must be observed to ensure compliance with current FCC
RF exposure guidelines.
For portable devices, in addition to the conditions 3 through 6 described above, a separate
approval is required to satisfy the SAR requirements of FCC Part 2.1093
If the device is used for other equipment that separate approval is required for all other
operating configurations, including portable configurations with respect to 2.1093 and
different antenna configurations.
For this device, OEM integrators must be provided with labeling instructions of finished
products. Please refer to KDB784748 D01 v07, section 8. Page 6/7 last two paragraphs:
A certified modular has the option to use a permanently affixed label, or an electronic label.
For a permanently affixed label, the module must be labelled withan FCC ID - Section
2.926 (see 2.2 Certification (labelling requirements) above). The OEM manual must provide
clear instructions explaining to the OEM the labelling requirements,options and OEM user
manual instructions that are required (see next paragraph).
For a host using a certified modular with a standard fixed label, if (1) the module’s FCC ID is
notvisible when installed in the host, or (2) if the host is marketed so that end users do not
havestraightforward commonly used methods for access to remove the module so that the
FCC ID ofthe module is visible; then an additional permanent label referring to the enclosed
module:“Contains Transmitter Module FCC ID:2ADQO3U21150Z” or “Contains FCC ID:
2ADQO3U21150Z” mustbe used. The host OEM user manual must also contain clear
instructions on how end users can find and/or access the module and the FCC ID.

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The final host / module combination may also need to be evaluated against the FCC Part
15B criteria for unintentional radiators in order to be properly authorized for operation as a
Part 15 digital device.
The user’s manual or instruction manual for an intentional or unintentional radiator shall
caution the user that changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment. In
cases where the manual is provided only in a form other than paper, such as on a computer
disk or over the Internet, the information required by this section may be included in the
manual in that alternative form, provided the user can reasonably be expected to have the
capability to access information in that form.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the manufacturer could void the user’s
authority to operate the equipment.
To ensure compliance with all non-transmitter functions the host manufacturer is responsible
for ensuring compliance with the module(s) installed and fully operational. For example, if a
host was previously authorized as an unintentional radiator under the Declaration of
Conformity procedure without a transmitter certified module and a module is added, the host
manufacturer is responsible for ensuring that the after the module is installed and operational
the host continues to be compliant with the Part 15B unintentional radiator requirements.