LTP5901-IPR datasheet(26/34 Pages) LINER

26 / 34 page

LTP5901-IPR/LTP5902-IPR

59012iprfa

For more information www.linear.com/LTP5901-IPR or www.linear.com/LTP5902-IPR

SOFTWARE INSTALLATION

Devices are supplied with the flash erased, requiring pro-

gramming as part of the OEMs manufacturing procedure.

The US Department of Commerce places restrictions on

export of systems and software supporting encryption.

All of Linear/Dust product software produced to date

contains encryption and is subject to export regulations

and may be provided only via MyLinear, https://www.

linear.com/mylinear. Customers purchasing SmartMesh

products will receive a certificate containing a registration

key and registration instructions with their order. After

registering with the key, customers will be able to

download SmartMesh software images from MyLinear.

Once registered, customers will receive automated e-mail

notifications as software updates are made avaialbe.

Linear Technology offers the DC9010, in circuit program-

mer for the Eterna based products. While the DC9010, is

provided as a finished product, the design documents are

provided as a reference for customers.

Once software has been loaded, devices can be configured

via either the CLI or API ports. Configuration commands

and settings are defined in SmartMesh IP Manager API

Guide and SmartMesh IP Manager CLI Guide.

FLASH DATA RETENTION

Eterna contains internal flash (non-volatile memory) to

store calibration results, unique ID, configuration settings

and software images. Flash retention is specified over the

operatingtemperaturerange.SeeElectricalCharacteristics

and Absolute Maximum Ratings sections.

Non destructive storage above the operating temperature

range of –40°C to 85°C is possible; although, this may

result in a degradation of retention characteristics.

The degradation in flash retention for temperatures >85°C

can be approximated by calculating the dimensionless

acceleration factor using the following equation.

= e











 •

TUSE+273

−

TSTRESS+273

























Where:

AF = acceleration factor

Ea = activation energy = 0.6eV

k = 8.625 • 10–5eV/°K

TUSE = is the specified temperature retention in °C

TSTRESS = actual storage temperature in °C

Example: Calculate the effect on retention when storing

at a temperature of 105°C.

TSTRESS = 105°C

TUSE = 85°C

AF = 2.8

So the overall retention of the flash would be degraded

by a factor of 2.8, reducing data retention from 20 years

at 85°C to 7.1 years at 105°C.

NETWORKING

The LTP5901-IPR/LTP5902-IPR network manager pro-

vides the ingress/egress point for at the wired to wireless

mesh network boundary, via the API UART interface. The

complexity of the mesh network management is handled

entirely within the embedded software, which provides

dynamic network optimization, deterministic power man-

agement, intelligent routing, and configurable bandwidth

allocation while achieving carrier class data reliability and

low power operation.

Dynamic Network Optimization

Dynamic network optimization allows Eterna to address

the changing RF requirements in harsh industrial en-

vironments resulting in a network that is continuously

self-monitoringandself-adjusting.Themanagerperforms

dynamicnetworkoptimizationbaseduponperiodicreports

on network health and link quality that it receives from

the network motes. The manager uses this information

to provide performance statistics to the application layer

and proactively solve problems in the network. Dynamic

operaTion

LTP5901-IPR 数据表(PDF) 26 Page - Linear Technology

LTP5901-IPR 数据表(HTML) 26 Page - Linear Technology

Html Pages

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 34

数据表下载