Midea Smart Technology 0001 SIP WIFI module User Manual GT141 IOE Module

Midea Smart Technology Co., Ltd SIP WIFI module GT141 IOE Module

Users Manual

LTM1215 Datasheet V1.1
- 1 -
LTM1215 IOE Module
Datasheet
V 1.1
June 2016
LTM1215 Datasheet V1.1
- 2 -
Revision
Date
Description
V1.0
2016/05/20
Initial release
V1.1
2016/06/14
Update the module’s size
LTM1215 Datasheet V1.1
- 3 -
1.Introduction ........................................................................................................................................... - 5 -
1.1 General Description .................................................................................................................... - 5 -
1.2 Hardware Description ................................................................................................................. - 5 -
1.3 Wireless Specification ................................................................................................................. - 5 -
1.4 Performance Specification .......................................................................................................... - 6 -
1.5 Protocols ..................................................................................................................................... - 6 -
1.6 Typical application ...................................................................................................................... - 6 -
1.7 Warranty ..................................................................................................................................... - 6 -
1.8 Certifications ............................................................................................................................... - 6 -
2.System Block Diagram ............................................................................................................................ - 7 -
2.1 Module System Block Diagram ................................................................................................... - 7 -
2.2 Typical design .............................................................................................................................. - 7 -
3.Features ................................................................................................................................................. - 8 -
3.1 IPv4/IPv6 Networking ................................................................................................................. - 8 -
3.2 Power Management ................................................................................................................... - 9 -
3.3 Application Program Interface .................................................................................................. - 10 -
3.4 WiFi Link Feature ................................................................................................................... - 10 -
4.LTM1215 Pin-out .................................................................................................................................. - 11 -
4.1 Pin-out Top view ....................................................................................................................... - 11 -
4.2 LTM1215 Pin Assignment and Descriptions .............................................................................. - 11 -
5.Electrical Specifications ........................................................................................................................ - 12 -
5.1 Absolute Maximum Ratings ...................................................................................................... - 12 -
5.2 Recommended Operating Conditions ....................................................................................... - 13 -
6.RF Parameters ...................................................................................................................................... - 14 -
6.1 Transmitter Characteristics for 2.4GHz Operation ................................................................... - 14 -
LTM1215 Datasheet V1.1
- 4 -
6.2 Receiver Characteristics for 2.4GHz Operation ........................................................................ - 14 -
7. Mechanical Dimensions ...................................................................................................................... - 15 -
8. Manufacture information ................................................................................................................... - 15 -
8.1 Optical Inspection ..................................................................................................................... - 15 -
8.2 Rework ...................................................................................................................................... - 15 -
8.3 Handling .................................................................................................................................... - 16 -
8.4 Soldering Recommendations .................................................................................................... - 16 -
9. Ordering Information .......................................................................................................................... - 17 -
LTM1215 Datasheet V1.1
- 5 -
1.Introduction
1.1 General Description
Midea LTM1215 module with a built-in printed antenna is an intelligent Internet of Everything
platform which can be powered by alljoyn with low power wireless connectivity.This complete
networking platform enables customers to add full-featured Wi-Fi to a wide variety of products
with minimal development effort and cost. It supports a network stack along with SSL security,
enabling full-featured internet connectivity and reliable information exchange in a small, low-cost
system.
The LTM1215 module contains a Midea WIFI IOT SIP LTP1218. The LTP1218 is a single chip system
on a chip (SoC) 1x1 802.11 b/g/n device optimized for low-power embedded applications with
single-stream capability for both Tx and Rx. It has an integrated network processor with a large set
of TCP/IP with IPv4/IPv6-based services. The LTM1215 provides UART_based host interfaces for
connecting to local system controllers.
1.2 Hardware Description
Size: 18 x 13 x 3.8 mm
Tolerance：±0.3mm
Operating voltage: 3.6 V ~5.5V
Operating humidity: 20-70%
Operating temperature range:
o Industrial: -40°C ~ +85°C
o Commercial: -10°C ~ +65°C
Power consumption
o Transmit: 250 mA @16dBm
o Receive: 75 mA (typical)
o Power saving mode(DITM=1): 1.09mA
o Standby mode(Sleep): 130uA
Connector: DIP or SMD-Pad connector - 4 Pads
Host interface: UART
o UART interface: Supports AT style command set.
1.3 Wireless Specification
Standard supported: IEEE802.11b/g/n
Frequency: 2.412 to 2.484GHz
Channels: up to 13 channels
LTM1215 Datasheet V1.1
- 6 -
1.4 Performance Specification
Host data rates
o UART: 115200bps, 8, n, 1
Link rates
o Up to 150MHz
1.5 Protocols
Internet protocols: IPv4/IPv6, TCP/UDP, ARP/NDP, DHCPv4, ICMPv6
Security protocols: WPS, WPA, WPA2, WAPI, WEP, TKIP
1.6 Typical application
● Household appliances
● Gaming consoles
● Handheld terminals
● Embedded wireless products
● security monitoring device
● industrial remote control
● Home automation
1.7 Warranty
One Year
1.8 Certifications
CE
FCC
ROHS compliant
LTM1215 Datasheet V1.1
- 7 -
2.System Block Diagram
2.1 Module System Block Diagram
2.2 Typical design
LTP1218
Level Shift
UART
DC-DC
Power
User MCU
8bit or 32bit
DC-DC/LDO
300mA/3.3V
LTM1215
UART
AC Input
Keyboard
Display
LTM1215 Datasheet V1.1
- 8 -
3.Features
3.1 IPv4/IPv6 Networking
The QCA4004 includes a TCP/IP and UDP offload capability. This capability can reduce Flash
requirements on a host MCU by up to 100 KBytes and also free up CPU cycles. The IP stack is a
simultaneous IPv4/IPv6 stack with a BSD-like interface to simplify porting and integration with
common embedded operating systems. The supported features of the QCA4004 (support for DHCP,
multicast, and ARP) include:
● ARP
● Forwarding
● Fragmentation/reassembly (supported with limitation)
● IPv4/v6 header processing
● UDP/TCP socket support
● DHCP v4
● Neighbor discovery
● Broadcast/multicast
● Path MTU discovery
● Address auto-configuration
● Multicast
● TCP zero-copy feature
QCA4004 IPv4 Supported RFCs
IPv4 RFC Number
RFC 1122 (TCP Timeout/retransmission)
RFC1122:TCP Keep-alive
RFC1122:TCP Zero-Window-Probe
RFC1122:TCP Sliding window protocol
LTM1215 Datasheet V1.1
- 9 -
QCA4004 IPv6 Supported RFCs
IPv6 RFC Number
RFC-2464:Transmission of IPv6 packets over Ethernet networks
RFC-2460:Internet Protocol version 6
RFC2462, Duplicate Address Detection (DAD)
RFC-2463:ICMPv6
RFC3513:IP version 6 addressing architecture
RFC3484:Default Address Selection
RFC2461:Neighbour discovery for IPv6 host
RFC4862:Stateless Address Auto-configuration
3.2 Power Management
LTM1215 provides integrated power management and control functions for maximum battery life
across all operational states.
o Transmit: 250 mA @16dBm;
o Receive: 75 mA (typical)
o Power saving mode: 1.09 mA(DTIM=1)
o Standby mode(Sleep): 130uA
Sleep state minimizes power consumption while network services are not required, yet the system
needs to remain available for use within a short time.
LTM1215 Datasheet V1.1
- 10 -
3.3 Application Program Interface
APIs provided by Qualcomm enable flexible host application customization. The firmware is written,
owned, controlled, and maintained by Qualcomm , whereas the reference host software is supplied
for system integrator to create application-specific host software, or even to use without
modification.
Note: If system integrator leverages the Qualcomm host software components, ultimately the
system developer is responsible for the host software on their platforms, OSes, and interconnects.
3.4 WiFi Link Feature
IEEE 802.11b/g/n, single stream 1x1
Single-band 2.4 GHz
Integrated PA, LNA, with support for external PA and external LNA
Green Tx power saving mode
Low power listen mode
Two-layer PCB design
Link rates up to 150 Mbps
State
Typical Current Consumption for LTM1215 module
SLEEP
130uA
802.11g
(2.4GHz)
DTIM1
1,090uA
DTIM3
437uA
DTIM5
335uA
DTIM10
274uA
LTM1215 Datasheet V1.1
- 11 -
4.LTM1215 Pin-out
4.1 Pin-out Top view
4.2 LTM1215 Pin Assignment and Descriptions
PIN
Signal Name
Description
1
VCC
Supply Input Pin
2
RXD
UART receive data
3
TXD
UART transmit data
4
VSS
Ground
5,6
VSS
Ground for SMT
LTM1215 Datasheet V1.1
- 12 -
5.Electrical Specifications
5.1 Absolute Maximum Ratings
Table 5-1 summarizes the absolute maximum ratings and Table 5-2 lists the recommended
operating conditions for the LTM1215. Absolute maximum ratings are those values beyond which
damage to the device can occur.
Functional operation under these conditions, or at any other condition beyond those indicated in
the operational sections of this document, is not recommended.
NOTE Maximum rating for signals follows the supply domain of the signals.
Table 5-1 absolute maximum ratings
symbol
Description
Max rating
unit
VCC
VCC supply for whole
module
–0.3 to 6.0
V
VIH MIN
Minimum Digital I/O
Input Voltage for 5V
I/O Supply
–0.3
V
VIH MAX
Maximum Digital I/O
Input Voltage for 5 V
I/O Supply
VCC +0.3
V
RFin
Maximum RF input
(reference to 50-Ω
input)
+10
dbm
Tstore
Storage Temperature
–45 to 135
°C
Tj
Junction Temperature
125
°C
ESD
Electrostatic Discharge
Tolerance
HBM - 2000
CDM - 500
V
LTM1215 Datasheet V1.1
- 13 -
5.2 Recommended Operating Conditions
These conditions apply to all DC characteristics unless otherwise specified:
Tamb = 25 °C, VCC= 5 V
Table 5-2 Recommended Operating Conditions
Symbol
Parameter
Min
Typ
Max
unit
VCC
VDD supply for
whole module
3.6
5
5.5
V
Tcase
Case
temperature
0
-
85
°C
PsiJT
Thermal
Parameter2
-
3
-
°C/W
LTM1215 Datasheet V1.1
- 14 -
6.RF Parameters
6.1 Transmitter Characteristics for 2.4GHz Operation
Table 6-1 summarizes the transmitter characteristics for the LTM1215.
Table 6-1 transmitter characteristics
Symbol
Rate/Mbps
IEEE Citation
Output power/dbm
802.11b
11
18.4.7.2
18±3
802.11g
6
17.3.9.1
18±3
54
17.3.9.1
14±3
802.11n
6.5
20.3.21.3
18±3
135
20.3.21.3
13±3
6.2 Receiver Characteristics for 2.4GHz Operation
Table 6-2 summarizes the receiver characteristics for the LTM1215. Notice that transmitter and
especially receiver characteristics must be test under test guider.
Table 6-2 receiver characteristics
Symbol
Rate/Mbps
IEEE limited/dbm
Typical Sensitivity/dbm
802.11 b
11
-76
-88
802.11g
6
-82
-90
54
-65
-74
802.11n
6.5
-82
-90
135
-61
-68
LTM1215 Datasheet V1.1
- 15 -
7. Mechanical Dimensions
8. Manufacture information
8.1 Optical Inspection
After SMT, LTM1215 PCBA will be automatically sent to do AOI (Automatic Optic Inspection).
Midea uses TR7500 to check every PCBA.
TR7500 features:
3CCD camera with 5 detectors
All pictures have the sense of 3D
Resolution: 10μm
TR7500 can detect blemishes during SMT to guarantee quality at the first step before IOE and
fully functional test.
8.2 Rework
The module can be unsoldered from the host board if the Moisture Sensitivity Level (MSL)
requirements are met as described in this datasheet. Never attempt a rework on the module itself,
e.g. replacing individual components. Such actions will terminate warranty coverage.
LTM1215 Datasheet V1.1
- 16 -
8.3 Handling
The LTM1215 modules contain a highly sensitive electronic circuitry. Handling without proper ESD
protection may destroy or damage the module permanently.
8.4 Soldering Recommendations
The LTM1215 modules can be SMT on the board following the temperature curve graph :
LTM1215 Datasheet V1.1
- 17 -
9. Ordering Information
LTM1215 -V W X YYYY ZZ
Batch code (Internal)
Date code (Internal)
Hardware version
Flash code
Chip code
Chip code
Code
Description
A
A version(packing difference)
B
A version
C
B version(packing difference)
D
B version
Flash code
Code
Description
1
4M bits of FM
2
8M bits of FM
Hardware version
Code
Description
1
V1.01
2
V1.02
3
V1.03
…
…
Federal Communication Commission Interference Statement
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.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device,
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residentialinstallation. This equipment generates uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
‐ Reorient or relocate the receiving antenna.
‐ Increase the separation between the equipment and receiver.
‐Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
‐Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: Any changes or modifications not expressly approved by the partyresponsible for compliance
could void the user's authority to operate this equipment.
This transmitter must not be co-located or operating in conjunction with any otherantenna or transmitter.
Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for anuncontrolled environment. This
equipment should be installed and operated withminimum distance 20cm between the radiator & your body.
This device is intended only for OEM integrators under the following conditions:
1) The antenna must be installed such that 20 cm is maintained between the antennaand users, and 2) The
transmitter module may not be co-located with any other transmitter or antenna.
As long as 2 conditions above are met, further transmitter test will not be required.
However, the OEM integrator is still responsible for testing their end-product for anyadditional compliance
requirements required with this module installed
IMPORTANT NOTE:In the event that these conditions can not be met (for examplecertain laptop configurations
or co-location with another transmitter), then the FCCauthorization is no longer considered valid and the FCC ID
can not be used on thefinal product. In these circumstances, the OEM integrator will be responsible for
reevaluating the end product(including the transmitter) and obtaining a separate FCCauthorization.
End Product Labeling
This transmitter module is authorized only for use in device where the antenna may be
installed such that 20 cm may be maintained between the antenna and users. The
final end product must be labeled in a visible area with the following: “Contains FCC
ID: 2AIRV0001”. The grantee's FCC ID can be used only when all FCC compliance requirements are
met.
Manual Information To the End User
The OEM integrator has to be aware not to provide information to the end userregarding how to install or
remove this RF module in the user’s manual of the endproduct which integrates this module.
The end user manual shall include all required regulatory information/warning as show in this manual.

Navigation menu