neTwork FeaTures
n
LTP5901-IPR/LTP5902-IPR
SmartMesh IP Network Manager
2.4GHz 802.15.4e
Wireless Embedded Manager
DescripTion
SmartMesh IP™ wireless sensor networks are self man-
aging, low power internet protocol (IP) networks built
from wireless nodes called motes. The
LTP™5901-IPR/
LTP5902-IPR
is the IP manager product in the Eterna
®
*
family of IEEE 802.15.4e printed circuit board assembly
solutions, featuring a highly integrated, low power radio
design by Dust Networks
®
as well as an ARM Cortex-M3
32-bit microprocessor running Dust’s embedded Smart-
Mesh IP networking software.
Based on the IETF 6LoWPAN and IEEE-802.15.4e stan-
dards, the LTP5901/2-IPR runs SmartMesh IP network
management software to monitor and manage network
performance and provide a data ingress/egress point via
a UART interface. The SmartMesh IP software provided
with the LTP5901/2-IPR is fully tested and validated, and
is readily configured via a software application program-
ming interface. With Dust’s time-synchronized SmartMesh
IP networks, all motes in the network may route, source
or terminate data, while providing many years of battery
powered operation.
SmartMesh IP motes deliver a highly flexible network
with proven reliability and low power performance in an
easy-to-integrate platform.
L,
LT, LTC, LTM, Linear Technology, Dust, Dust Networks, Eterna, SmartMesh and the
Linear logo are registered trademarks and LTP SmartMesh IP and the Dust Networks logo are
,
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 7375594, 7420980, 7529217, 7791419,
7881239, 7898322, 8222965.
* Eterna is Dust Networks’ low power radio SoC architecture.
n
n
n
Complete
Radio Transceiver, Embedded Processor,
and
Networking Software
for Forming a Self-Healing
Mesh Network
SmartMesh
®
Networks Incorporate:
n
Time Synchronized Network-Wide Scheduling
n
Per Transmission Frequency Hopping
n
Redundant Spatially Diverse Topologies
n
Network-Wide Reliability and Power Optimization
n
NIST Certified Security
SmartMesh Networks Deliver:
n
>99.999% Network Reliability Achieved in the
Most Challenging RF Environments
n
Sub 50µA Routing Nodes
Compliant to 6LoWPAN Internet Protocol (IP) and
IEEE 802.15.4e Standards
lTp5901/2-ipr FeaTures
n
n
n
n
Manages Networks of Up to 100 Nodes
Sub 1mA Average Current Consumption Enables
Battery Powered Network Management
RF Modular Certification Include USA, Canada, EU,
Japan, Taiwan, Korea, India, Australia and New
Zealand
PCB Assembly with Chip Antenna (LTP5901-IPR) or
with MMCX Antenna Connector (LTP5902-IPR)
Typical applicaTion
EXPANDED VIEW
LTP5901-IPR
LTP5901/2-IPM
ANTENNA
IN
+
SENSOR
IN
–
UART
LTC
®
2379-18 SPI
µCONTROLLER
UART
HOST
APPLICATION
MOTE
59012IPR TA01
59012iprfa
For more information
www.linear.com/LTP5901-IPR or www.linear.com/LTP5902-IPR
1
LTP5901-IPR/LTP5902-IPR
Table oF conTenTs
Network Features .......................................... 1
LTP5901/2-IPR Features .................................. 1
Typical Application ........................................ 1
Description.................................................. 1
SmartMesh Network Overview........................... 3
Absolute Maximum Ratings .............................. 4
Pin Configuration .......................................... 4
Order Information .......................................... 5
Recommended Operating Conditions ................... 5
DC Characteristics ......................................... 5
Radio Specifications ...................................... 6
Radio Receiver Characteristics .......................... 6
Radio Transmitter Characteristics ....................... 7
Digital I/O Characteristics ................................ 7
Temperature Sensor Characteristics .................... 7
System Characteristics ................................... 8
UART AC Characteristics.................................. 8
Time AC Characteristics .................................. 9
Radio_INHIBIT AC Characteristics ..................... 10
Flash AC Characteristics ................................. 10
Flash SPI Slave AC Characteristics .................... 10
External Bus AC Characteristics ........................ 11
Typical Performance Characteristics .................. 14
Pin Functions .............................................. 19
Operation................................................... 22
Power Supply..........................................................23
Supply Monitoring and Reset .................................23
Precision Timing .....................................................23
Application Time Synchronization ..........................23
Time References .....................................................23
Radio ...................................................................... 24
UARTs ..................................................................... 24
API UART Protocol ................................................. 24
CLI UART ................................................................25
Autonomous MAC...................................................25
Security ..................................................................25
Temperature Sensor ...............................................25
Radio Inhibit ...........................................................25
Software Installation...............................................26
Flash Data Retention ...............................................26
Networking .............................................................26
Applications Information ................................ 29
Regulatory and Standards Compliance ...................29
Soldering Information .............................................29
Related Documentation .................................. 30
Package Description ..................................... 31
Revision History .......................................... 33
Typical Application ....................................... 34
Related Parts .............................................. 34
2
59012iprfa
For more information
www.linear.com/LTP5901-IPR or www.linear.com/LTP5902-IPR
LTP5901-IPR/LTP5902-IPR
smarTmesh neTwork overview
A SmartMesh network consists of a self-forming multi-hop,
mesh of nodes, known as motes, which collect and relay
data, and a network manager that monitors and manages
network performance and security, and exchanges data
with a host application.
SmartMesh networks communicate using a time slotted
channel hopping (TSCH) link layer, pioneered by Dust
Networks. In a TSCH network, all motes in the network
are synchronized to within less than a millisecond. Time
in the network is organized into timeslots, which enables
collision-free packet exchange and per-transmission
channel-hopping. In a SmartMesh network, every device
has one or more parents (e.g. mote 3 has motes 1 and
2 as parents) that provide redundant paths to overcome
communications interruption due to interference, physical
obstruction or multi-path fading. If a packet transmission
fails on one path, the next retransmission may try on a
different path and different RF channel.
A network begins to form when the network manager
instructs its onboard access point (AP) radio to begin send-
ing advertisements—packets that contain information that
enables a device to synchronize to the network and request
to join. This message exchange is part of the security hand-
shake that establishes encrypted communications between
the manager or application, and mote. Once motes have
joined the network, they maintain synchronization through
time corrections when a packet is acknowledged.
HOST
APPLICATION
to the network manager in packets called health reports.
The network manager uses health reports to continually
optimize the network to maintain >99.999% data reliability
even in the most challenging RF environments.
The use of TSCH allows SmartMesh devices to sleep in-
between scheduled communications and draw very little
power in this state. Motes are only active in timeslots
where they are scheduled to transmit or receive, typically
resulting in a duty cycle of < 1%. The optimization soft-
ware in the network manager coordinates this schedule
automatically. When combined with the Eterna low power
radio, every mote in a SmartMesh network—even busy
routing ones—can run on batteries for years. By default,
all motes in a network are capable of routing traffic from
other motes, which simplifies installation by avoiding the
complexity of having distinct routers vs non-routing end
nodes. Motes may be configured as non-routing to further
reduce that particular mote’s power consumption and to
support a wide variety of network topologies.
ALL NODES ARE ROUTERS.
THEY CAN TRANSMIT AND RECEIVE.
THIS NEW NODE CAN JOIN
ANYWHERE BECAUSE ALL
NODES CAN ROUTE.
59012IPR SNO02
NETWORK MANAGER
AP
Mote
1
Mote
2
Mote
3
59012IPR SNO01
An ongoing discovery process ensures that the network
continually discovers new paths as the RF conditions
change. In addition, each mote in the network tracks per-
formance statistics (e.g. quality of used paths, and lists of
potential paths) and periodically sends that information
At the heart of SmartMesh motes and network managers
is the Eterna IEEE 802.15.4e System-on-Chip (SoC), fea-
turing Dust Networks’ highly integrated, low power radio
design, plus an ARM Cortex-M3 32-bit microprocessor
running SmartMesh networking software. The SmartMesh
networking software comes fully compiled yet is configu-
rable via a rich set of application programming interfaces
(APIs) which allows a host application to interact with
the network, e.g. to transfer information to a device, to
configure data publishing rates on one or more motes,
or to monitor network state or performance metrics. Data
publishing can be uniform or different for each device,
with motes being able to publish infrequently or faster
than once per second as needed.
59012iprfa
For more information
www.linear.com/LTP5901-IPR or www.linear.com/LTP5902-IPR
3
LTP5901-IPR/LTP5902-IPR
absoluTe maximum raTings
(Notes 1, 2)
Supply Voltage on VSUPPLY ..................................4.20V
Input Voltage on AI_0/1/2/3 Inputs ........................1.98V
Voltage on Any Digital I/O Pin .... –0.3V to VSUPPLY + 0.3V
Input RF Level ......................................................10dBm
Storage Temperature Range (Note 3)..... –55°C to 105°C
Operating Temperature Range
LTP5901I/LPT5902I .............................–40°C to 85°C
CAUTION: This part is sensitive to electrostatic discharge
(ESD). It is very important that proper ESD precautions
be observed when handling the LTP5901/LTP5902-IPR.
pin conFiguraTion
Pin functions shown in italics are currently not supported in software.
GND
RESERVED
NC
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
GND
RESERVED
NC
NC
RESETn
TDI
TDO
TMS
TCK
GND
RESERVED
RESERVED
RESERVED
RESERVED
EB_DATA_7
EB_DATA_6
EB_DATA_4
EB_DATA_0
NC
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 32 33
UARTCO_TX / EB_IO_LE0
UARTCO_RX / EB_DATA_1
IPCS_MISO
34 35 36
GND
IPCS_MOSI
IPCS_SCK
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
GND
NC
RADIO_INHIBIT
TIMEn
UART_TX
UART_TX_CTSn
UART_TX_RTSn
UART_RX
UART_RX_CTSn
UART_RX_RTSn
GND
VSUPPLY
RESERVED
NC
NC
FLASH_P_ENn / EB_IO_LE1
EB_IO_OEn
EB_IO_WEn
RESERVED / UARTC1_RX
RESERVED / UARTC1_TX
EB_IO_CS0n
EB_DATA_5
EB_DATA_2
EB_DATA_3
GND
EB_ADDR_0
EB_ADDR_1
IPCS_SSn
EB_IO_LE2
GND
PC PACKAGE
66-LEAD PCB
59012iprfa
4
For more information
www.linear.com/LTP5901-IPR or www.linear.com/LTP5902-IPR
LTP5901-IPR/LTP5902-IPR
orDer inFormaTion
LEAD FREE FINISH†
LTP5901IPC-IPMA#PBF
LTP5902IPC-IPMA#PBF
PART MARKING*
LTP5901IPC-IPMA#PBF
LTP5902IPC-IPMA#PBF
PACKAGE DESCRIPTION
66-Lead (42mm × 24mm × 5.5mm) PCB with Chip Antenna
66-Lead (37.5mm × 24mm × 5.5mm) PCB with MMCX
Connector
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
†This product ships with the flash erased at the time of order. OEMs will need to program devices during development and manufacturing.
For legacy part numbers and ordering information go to:
www.linear.com/ltp5901-ipr#orderinfo
or
www.linear.com/ltp5902-ipr#orderinfo
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
*The temperature grade is identified by a label on the shipping container.
The
l
denotes the specifications which apply over
the full operating temperature range, otherwise specifications are at T
A
= 25°C and VSUPPLY = 3.6V unless otherwise noted.
SYMBOL PARAMETER
VSUPPLY Supply Voltage
Supply Noise
Operating Relative Humidity
Temperature Ramp Rate While Operating in
Network
CONDITIONS
Including Noise and Load Regulation
50Hz to 2MHz
Non-Condensing
l
l
l
l
recommenDeD operaTing conDiTions
MIN
2.1
10
–8
TYP
MAX
3.76
250
90
8
UNITS
V
mV
% RH
°C/min
The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C and VSUPPLY = 3.6V unless otherwise noted.
OPERATION/STATE
Power-On Reset
Doze
Deep Sleep
In-Circuit Programming
Peak Operating Current
8dBm
0dBm
Active
CONDITIONS
During Power-On Reset, Maximum 750µs + VSUPPLY Rise Time from 1V to
1.9V
RAM on, ARM Cortex-M3, Flash, Radio, and Peripherals Off, All Data and
State Retained, 32.768kHz Reference Active
RAM on, ARM Cortex-M3, Flash, Radio, and Peripherals Off, All Data and
State Retained, 32.768kHz Reference Inactive
RESETn and FLASH_P_ENn Asserted, IPCS_SCK at 8MHz
System Operating at 14.7MHz, Radio Transmitting, During Flash Write.
Maximum Duration 4.33 ms.
ARM Cortex-M3, RAM and Flash Operating, Radio and All Other Peripherals
Off. Clock Frequency of CPU and Peripherals Set to 7.3728MHz, VCORE =
1.2V
Single Bank Flash Write
Single Bank Page or Mass Erase
Current with Autonomous MAC Managing Radio Operation, CPU Inactive.
Clock Frequency of CPU and Peripherals Set to 7.3728MHz.
Current with Autonomous MAC Managing Radio Operation, CPU Inactive.
Clock Frequency of CPU and Peripherals Set to 7.3728MHz.
MIN
TYP
12
1.2
0.8
20
30
26
1.3
MAX
UNITS
mA
µA
µA
mA
mA
mA
mA
Dc characTerisTics
Flash Write
Flash Erase
Radio Tx
0dBm
8dBm
Radio Rx
3.7
2.5
5.4
9.7
4.5
mA
mA
mA
mA
mA
59012iprfa
For more information
www.linear.com/LTP5901-IPR or www.linear.com/LTP5902-IPR
5
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