Advanced Information
S m a r t M e s h
®
W i r e l e s s H A R T
T M
LTP5901/LTP5902-WHM
2.4 GHz 802.15.4 Eterna
T M
Mote Module
About SmartMesh WirelessHART
SmartMesh WirelessHART products are designed for the harshest industrial environments, where low power, reliability, resilience and
scalability are key. SmartMesh WirelessHART solutions are well-suited for applications requiring WirelessHART standards compliance, as
well as a wide range of applications from renewable energy generation, such as solar and wind power, to factory machine health
monitoring and data center HVAC energy management. Smartmesh WirelessHART complies with the WirelessHART (IEC 62591)
standard, offers the lowest power consumption in its class and is the most widely used WirelessHART product available. SmartMesh
WirelessHART systems are easy for industrial automation vendors to integrate and simple for end users to deploy.
Product Descriptions – LTP5901/LTP5902-WHM
The LTP5901/LTP5902-WHM mote module combines Dust Networks’ robust sensor networking solution with Dust’s breakthrough
Eterna
TM
SoC technology in an easy-to-integrate 22-pin module, and may serve as a drop-in replacement for Dust Networks’ M2510 mote
module. As part of the SmartMesh WirelessHART system, the LTP5901/LTP5902-WHM enables customers to integrate a standards-based
wireless network into sensors and actuators to provide scalable bidirectional communications.
The LTP5901/LTP5902-WHM is designed for use in line-powered, battery-powered, or energy-scavenging sensor and actuator
applications that demand reliable performance and ultra-low power operation. With Dust Networks’ innovative IEEE 802.15.4-compliant
design and integrated power amplifier, the LTP5901/LTP5902-WHM enables a decade of battery life on two AA batteries, including
routing motes. All motes function as wireless routers, enabling a redundant, high performance, full-mesh topology.
The LTP5901/LTP5902-WHM Mote modules combine Dust Networks’ robust sensor networking solution with Dust’s breakthrough
Eterna
TM
SoC Technology in an easy-to-integrate surface-mount printed circuit board (PCB). The LTP5901-WHM module includes an on-
board chip antenna, while the LTP5902-WHM module includes an MMCX antenna connector. Both PCB modules will come with modular
certifications for FCC, CE, and IC. To accelerate customer development time and reduce development costs, Dust Networks provides a
fully engineered RF solution, comprehensive APIs, and complete development documentation.
Key Product Features
Highly Scalable
•
•
•
Ultra-low Power Operation
Automatic network formation—new motes join
automatically from anywhere in the network
All motes are wireless routers, providing a full-mesh
network that easily scales to tens of thousands of motes per
square kilometer
Time-synchronized communication across 15 channels
virtually eliminates in-network collisions, allowing for
dense deployments in overlapping radio space
Intelligent Networking Platform enables greater than
99.99% network reliability even in the most challenging
monitoring and control environments
Time-synchronized channel hopping seamlessly
compensates for in band blocking and multipath fading in
dynamic RF environments
Interoperable with WirelessHART devices
•
•
Industry-leading radio technology capable of line-powered,
battery-powered, or energy-scavenging operation
Automatic power optimization of every device in network,
enabling a decade of network operation on two Lithium AA
batteries
Fully engineered RF, with power amplifier (PA), balun, and
antenna matching circuitry
A comprehensive application programming interface (API)
provides a rich and flexible functionality to ease software
development and device integration
Operates on 2.4 GHz global license-free band, providing
customers with a single product for world-wide use
RF Modular certifications (pending)-FCC, IC, and CE
AES-128 bit encryption
Easy to Integrate and Deploy
•
•
Superior Reliability
•
•
Secure Global Market Solution
•
•
•
WirelessHART (IEC62591) compliance
•
Encryption and Authentication
RSSI
IEEE 802.15.4E MAC
Linear Technology / Dust Networks
IEEE 802.15.4 PHY
Advanced Information
Table of Contents
1.0
1.1
1.2
General ..............................................................................................................4
Related Documentation ..................................................................................... 4
Conventions..................................................................................................... 4
1.2.1 Signal Naming .............................................................................................. 4
1.2.2 Number Format ............................................................................................ 4
2.0
2.1
2.2
2.3
Introduction .......................................................................................................5
Power Supply ................................................................................................... 5
Precision Timing ............................................................................................... 6
Time References............................................................................................... 6
2.1.1 Supply Monitoring and Reset .......................................................................... 6
2.2.1 Time Synchronization .................................................................................... 6
2.3.1 Relaxation Oscillator...................................................................................... 6
2.3.2 32.768 kHz Crystal ....................................................................................... 6
2.3.3 20 MHz Crystal ............................................................................................. 6
2.4
2.5
Radio .............................................................................................................. 6
UARTs............................................................................................................. 7
2.5.2 API UART Protocol......................................................................................... 7
2.5.3 CLI UART..................................................................................................... 8
2.6
2.7
2.8
Autonomous MAC ............................................................................................. 8
Security .......................................................................................................... 8
Temperature Sensor ......................................................................................... 8
2.8.1 Radio Inhibit ................................................................................................ 8
2.8.2 Sleep .......................................................................................................... 9
2.10 Flash Programming ........................................................................................... 9
3.0
4.0
4.1
4.2
4.3
9
Operation ...........................................................................................................9
Start Up .......................................................................................................... 9
Serial Flash Emulation ......................................................................................10
Operation .......................................................................................................10
4.1.1 Fuse Table ..................................................................................................10
4.3.1 Active State ................................................................................................10
4.3.2 Doze State..................................................................................................10
4.4
5.0
5.2
5.3
5.4
5.5
2
Duty Cycling and Autonomous Peripherals...........................................................11
Pinout ..............................................................................................................12
Eterna Mote Modules........................................................................................12
Power Supply ..................................................................................................15
Analog ...........................................................................................................15
JTAG..............................................................................................................15
Linear Technology / Dust Networks
Eterna
Datasheet
5.3.1 Antenna .....................................................................................................15
Advanced Information
6.0
7.0
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
Absolute Maximum Ratings ..............................................................................16
Recommended Operating Conditions................................................................17
Electrical Characteristics ..................................................................................17
Radio Specifications .........................................................................................17
DC Characteristics ...........................................................................................17
Radio Receive Characteristics ............................................................................18
Radio Transmitter Characteristics.......................................................................19
Digital I/O Characteristics .................................................................................19
Temperature Sensor Characteristics ...................................................................20
ADC Characteristics .........................................................................................20
System Characteristics .....................................................................................20
UART AC Characteristics ...................................................................................21
8.10 TIMEn AC Characteristics ..................................................................................22
8.11 SLEEPn AC Characteristics ................................................................................22
8.12 RADIO_INHIBIT AC Characteristics.....................................................................22
8.13 FLASH AC Characteristics..................................................................................23
8.14 Flash Programming AC Characteristics ................................................................23
9.0
10.0
Typical Performance Characteristics ................................................................24
Mechanical Details ...........................................................................................25
10.2 Mote Module ...................................................................................................25
10.3 Soldering Information ......................................................................................27
11.0
12.0
13.0
Regulatory and Standards Compliance .............................................................27
References .......................................................................................................27
Order Information............................................................................................27
11.1 Compliance to Restriction of Hazardous Substances (RoHS) ...................................27
Eterna
Datasheet
Linear Technology / Dust Networks
3
Advanced Information
1.0
1.1
General
Related Documentation
•
040-0102 Eterna Integration Guide
•
040-0109 Design Specific Configuration Guide
•
040-0110 Eterna Serial Programmer Guide
1.2
1.2.1
Conventions
Signal Naming
The naming convention for Eterna signals is UPPER_CASE_SEPARATED_BY_UNDERSCORE. Active-low signals, such
as RESETn, add a trailing lower case n. An exception to the naming convention is UART transmit and receive signals which
are named consistent with industry practice as RX and TX, omitting the lower case n, despite being active low signals. The
terms assertion and active refers to a signal in a logically true state: logic ‘1’ for active high signals and logic ‘0’ for active
low signals. The terms negated and inactive refer to a signal being in its logically false state: logic ‘0’ for active high signals
and logic ‘1’ for active low signals.
1.2.2
Number Format
The
0x
prefix indicates a hexadecimal number follows.
The
0b
prefix indicates a binary number follows.
The lack of a prefix indicates a decimal number follows.
4
Linear Technology / Dust Networks
Eterna
Datasheet
Advanced Information
2.0
Introduction
Eterna is the world’s most energy-efficient IEEE 802.15.4 compliant platform enabling battery and energy harvested
endpoint, routing and network management solutions. With a powerful 32-bit ARM
®
Cortex™-M3, best in class radio, flash,
RAM and purpose-built peripherals, Eterna provides a flexible, scalable and robust networking solution for applications
demanding both minimal energy consumption and data reliability in even the most challenging RF environments.
Shown in Figure 1, Eterna integrates purpose-built peripherals that excel in both low operating-energy consumption and the
ability to rapidly and precisely cycle between operating and low-power states. Items in the shaded region correspond to the
analog/RF components.
32 kHz
32 kHz, 20 MHz
Primary
DC/DC
Converter
PMU /
Clock
Control
Timers
Sched.
SRAM
72 KB
Voltage Reference
Core Regulator
Clock Regulator
Flash
512 KB
Relaxation
Oscillator
Analog Regulator
20 MHz
PA
DC/DC
Converter
Flash
Controller
AES
Code
Auto
MAC
PoR
802.15.4
Mod
802.15.4
Framing
DMA
802.15.4
Demod
ADC
DAC
LPF
PA
PLL
Cortex-M3
System
Limiter
AGC
BPF
PPF
LNA
IPCS
SPI
Slave
CLI
UART
(2 pin)
API
UART
(6-pin)
RSSI
ADC
Ctrl.
10-bit
ADC
VGA
S
PTAT
4-bit
DAC
Bat.
Load
Figure 1
Eterna Block Diagram
2.1
Power Supply
Eterna is powered from a single pin, VSUPPLY, which powers the I/O cells and is also used to generate internal supplies.
Eterna’s two on-chip DC/DC converters minimize Eterna’s energy consumption while the device is awake. To prevent power
from being wasted the DC/DC converter is disabled when the device is in low-power state. Eterna’s rejection of supply noise
is substantial owing to the two integrated DC/DC converters and three integrated low-dropout regulators. Eterna’s operating
supply range is high enough to support direct connection to Li-SClO
2
sources and wide enough to support battery operation
over a broad temperature range.
Eterna
Datasheet
Linear Technology / Dust Networks
5
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