Cermetek DataSheet for product XE900SL10-N

XE900SL10-N

November 2007

Xecom Offers Open Networking Option for XE900SL10

Description

Features

Since Xecom first introduced the XE900SL10

* Small Size: 1.0” by 1.0” by 0.26”

transceivers,theirrobustnetworkingcodehasmaximized

* Serial Control and Configuration of the Wireless Link.

networkreliabilityevenunderpoorconditions. However,

some applications, such as those with small payloads

* Supports 65,000 unique node addresses

or higher data rates, found the networking code added

* Output Power Programmable from 0 to 10 mW;

too much overhead. Xecom has addressed this with

* Maximum Receiver Sensitivity -100 dBm

the open network version of the XE900SL10,

XE900SL10-N

* Obstructed signal range to 300 feet;

* Wireless Data Rate 76.8K bps, half-duplex; typical

With the XE900SL10-N the system designer controls

throughput, 12K bps

the type and extent of error monitoring and link

maintenance he needs. Remote sensor netowrks can be

* Power Consumption:

built to maximize reliablity or to optimize data transfer.

55 mA @ 3.3Volts when transmitting at 10 mW

less than 1 mA in Sleep Mode or Power-Down modes

The XE900SL10-N continues to offer many of the

* SensorOnAir ™ allows direct connection of sensors to

XE900SL10’s advanced features; Frequency Hopping

the Smart Transceiver

Spread Spectrum signaling, remote sensor reading with

SensorOnAir, small size, and low power consumption.

* Operating Temperature Range of -40 to +85 C

Xecom also offers a high power open network product,

* FCC Part 15 Registered

XE900S-500-N for applications needing greater range.

XE900SL10-N Block Diagram

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XE900SL10-N

XE900SL10-N MECHANICAL SPECIFICATIONS

Top View

Dimension Description

Inches

ModuleWidth

1.00

25.40

Max.ModuleThickness

0.30

7.62

Row to Row

1.00

25.40

MinimumLeadLength

0.125

3.18

ModuleLength

1.00

25.40

Pin 10 to Pin 14

0.40

10.16

Pin 14 to Edge

0.50

12.70

Pin 1 to Pin 9

0.80

20.32

PintoPinSpacing

0.10

2.54

Pin 1, 9, or 10 to Edge

0.10

2.54

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XE900SL10-N

Using the XE900SL10-N Power Saving Modes

The XE900SL10-N includes three low power operating

RFMonitorMode : TheXE900SL10-NRFmonitormode

modes (RF Monitor, Sleep and Power-Down) to maximize

has 4 settings. At each of these settings the transceiver

system battery life. The #P command determines how

sits in power down mode for the prescribed period of

the transceiver will operate when not being asked to

time.

The transceiver then wakes up, turns on its

transmit or receive an RF signal. Below are descriptions

receiver and checks for incoming messages. If no

of all of the XE900SL10-N operating modes.

messages are received the transceiver returns to power

down mode after about 200 milliseconds. If a carrier is

IDLE: In Idle Mode all circuits within the XE900SL10-N

detected, the transceiver completes the transaction

are powered and available for immediate action. This

before returning to power down mode. Intervals of 2

includes the RF receiver which actively monitors the air

seconds (#P3), 4 seconds (#P4), 8 seconds (#P5) and 16

for an incoming communications request. Current draw

seconds (#P6) can be chosen.

in Idle Mode is typically 18 milliamps.

RF Receive Mode : In RF Receive Mode the XE900SL10-

SLEEP : In Sleep Mode all XE900SL10-N circuits are

N is actively receiving an incoming 900 RF data signal.

powered-down to reduce consumption. Commands and

RF Receive Mode draws less than 30 milliamps.

incoming RF communications requests will not be

recognized. Any input on the /TXD line will wake the

RF Transmit Mode :

In RF Transmit Mode the

XE900SL10-N and return it either the Idle or Power-

XE900SL10-N actively transmits the 900 MHz data

Down Mode whichever state it was last in before being

signal. Current draw in Transmit mode is no more than

put into Sleep Mode. Current draw in Sleep Mode is less

55 milliamps with the transmit output power set to

than 40 microamps.

maximum,10milliwatts.

Power-Down: In Power-Down Mode all RF circuitry is

AT CommandControl

shut down but the communications controller remains

The low power modes are controlled by the AT#Pn

active to accept AT commands. In this mode the

command, see below.

XE900SL10-N cannot respond to an incoming RF

AT#P0 - Sets the transceiver to Idle mode.

communications request. If a Transmit RF or Receive RF

AT#P1 - Sets the transceiver to Sleep Mode.

command is received, the XE900SL10-N can activate the

RF section in under 200 microseconds. Current draw in

AT#P2 - Sets the transceiver for Power-Down Mode.

Power-Down Mode is less than 500 microamps.

AT#P3 - RF Monitor Mode (2 second interval)

AT#P4 - RF Monitor Mode (4 second interval)

AT#P5 - RF Monitor Mode (8 second interval)

AT#P6 - RF Monitor Mode (16 second interval)

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XE900SL10-N

XE900SL10-N PIN CONFIGURATION

/TXD

Antenna

/RXD

XE900SL10

/CTS

TopView

/RTS

DIO3

Reset

DIO2

ADC0

DIO1

ADC1

/DCD

VCC

N/C

GND

SIGNAL

PINS

DESCRIPTION

/TXD

Transmit Data is the data input to the XE900SL10-N.

/RXD

Received Data is the data output from the XE900SL10-N.

/CTS

Clear to Send provides hardware flow control from the XE900SL10-N. The XE900SL10-N

drives /CTS high to signal the host to temporarily stop the flow of data into /TXD.

/RTS

Request to Send provides hardware flow control from the host system. The host system

drives /RTS high to signal the XE900SL10-N to temporarily stop the data flow onto /RXD.

DIO3

DIO3 may be programmed as either a digital input or digital output. It connects directly to

the communications controller in the XE900SL10-N.

DIO2

DIO2 may be programmed as either a digital input or digital output. It connects directly to

the communications controller in the XE900SL10-N.

DIO1

DIO1 may be programmed as either a digital input or digital output. It connects directly to

the communications controller in the XE900SL10-N.

/DCD

/DCD, Data Cqrrier Detect, operates as an active low output from the transceiver. /DCD

is activated when a valid RF carrier signal is received.

N/C

No Connection

GND

Common voltage reference for the XE900SL10-N.

VCC

3.3VoltpowerfortheXE900SL10-N.

ADC1

Analog Input 1 to the XE900SL10-N communications controller. ADC1 connects to an

internal 12-bitAnalog to Digital Convertor. ADC1 may also be configured as a digital

input if no analog inputs are required.

ADC0

Analog Input 0 to the XE900SL10-N communications controller. ADC0 connects to an

internal 12-bitAnalog to Digital Convertor. ADC0 may also be configured as a digital

input if no analog inputs are required.

Reset

Provides an active high hardware reset to the XE900SL10-N.

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XE900SL10-N

ABSOLUTE MAXIMUM RATINGS

VCC

3.9Volts

Storage Temperature

-55 O C to +125 O C

Operating Temperature Range

-40 O C to +85 O C

WARNING: Exceeding any of these ratings will void the warranty and may damage the device

XE900SL10-N ELECTRICAL SPECIFICATIONS

Parameter

Min

Typ

Max

Units

Comments

VCC

2.7

3.3

3.6

Volts

Transceiver power

ICC

Transmit Mode (10 mW output)

Receive Mode

Idle Mode

1.7

Avg; 2-sec RF Monitor interval

0.85

Avg; 4-sec RF Monitor interval

0.43

Avg; 8-sec RF Monitor interval

0.22

Avg; 16-sec RF Monitor interval

Idle Mode

0.500

Power-Down Mode

0.040

Sleep Mode

Output Power:

50 Ohm Load

Wireless Receive Sensitivity

-100

dBm

Frequency Hopping Channels

Frequency Range

902

928

MHz

Communications Range

300

ft.

Antenna Output Impedance

Ohms

Voh

2.25

Volts

VCC=3.3Volts

Vol

0.75

Volts

VCC=3.3Volts

Vih

2.25

Volts

VCC=3.3Volts

Vil

0.75

Volts

VCC=3.3Volts

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XE900SL10-N

XE900SL10-N TYPICAL CONNECTION DIAGRAM

Antenna

/TXD

Host

Serial

/RXD

I/F

/CTS

/RTS

DIO3

Reset

DIO2

ADC0

DIO1

ADC1

DIO0

VCC

N/C

GND

C1 C2 C3

Parts List for XE900SL10 -N Typical Connection Diagram

Reference

Designation

Qty

Description

Capacitor, Electrolytic, 100 ufd, 10Volts

C2,C4

Capacitor 0.1 ufd, 10Volts

C3,C5

Capacitor 47 pfd, 10 Volts

Coilcraft0603HC-7N5XJB

Antenna *

50 Ohm, 1/4Wave

* TheAntenna connector on the XE900SL10-N is a MaleAMC

connector. An Female AMC to Female SMA adapter is needed for the

antenna connection

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XE900SL10-N

XE900SL10-N COMMUNICATIONS CONTROLLER

The XE900SL10-N communications controller controls

CommandLine - XE900SL10-Ncommandsmaybestrung

both the wireless communications and the user interfaces.

together in a single command line of up to 30 characters.

The XE900SL10-N has two system interfaces; the serial

Commands in the command string are executed in the

interface and the direct sensor interface supported by

sequence they appear.

the SensorOnAir™ feature.

Omitted Parameters - Most commands include a

Serial Interface

parameter which determines the function setting. When

The XE900SL10-N maintains a limited serial interface to

the command parameter is omitted from the command

the system. Control and configuration of the transceiver

string, it is assumed to be a 0.

takes place through the serial interface using modem-like

Result Codes - A result code is normally issued after each

AT commands. Serial data rates from 1200 bits per second

action. Result codes may be provided as full words, one

to 115.2K bits per second are supported. The serial

or two digit numeric codes, or may be disabled all

interface signals are listed below.

together. Each result code ends with a carriage return

/TXD - Transmit Data provides the input to the

when numeric result codes are chosen. When full word

XE900SL10-N forAT commands and Data to be

result codes are chosen, a Line Feed and Carriage Return

transmitted on the wireless network.

precede and follow each result code.

/RXD- Received Data supplies the output from the

Escape Sequence -A three character sequence allows you

XE900SL10-NforreceivedRFdataandresponses

to a disconnect from the wireless link and return to

to AT commands.

command mode.

The sequence “~~~” is assigned to

disconnect the link.

/RTS - Request to Send acts as the hardware flow

control input to the XE900SL10-N. The DTE

Sensor Interface:

deactivates /RTS to stop the XE900SL10-N from

SensorOnAir ™

sending more data on the /RXD line.

Sensors can be connected directly to the XE900SL10-N

/CTS - Clear to Send is the hardware flow control output

without an applications controller. In this SensorOnAir ™

from the XE900SL10-N. The XE900SL10-N

configuration the XE900SL10-N communications

deactivates /CTS to advise the host to stop

controller controls the operation of the sensors.

inputting data on the /TXD lead.

Sensor I/O Lines

/DCD- Data Carrier Detect is an output from the

SensorOnAir controls the operation of 5 I/O lines to the

XE900SL10-N which indicates to the system that

XE900SL10-N. This includes 2 analog inputs,ADC0 and

a valid carrier signal is being received. .

ADC1,and3digitalI/Olines,DIO1,DIO2,andDIO3. ADC0

and ADC1 are connected to a 12-bit analog to digital

XE900SL10-NAT CommandFormat

converter and using a 2.5 volt reference derived from VCC

AT commands for the XE900SL10-N follow a strict

as their reference voltage. The digital I/O lines can be

format. Each command begins with the prefix AT and

programmed to act as either inputs or outputs.

ends with a carriage return. The communications

controller accepts commands at data rates from 1200 to

Configuring for Sensor Operation

115,200 bps. The default serial data rate is 9600 bps and

All SensorOnAir control functions for the analog inputs

can be changed using register S23.

and digital I/O’s are performed by the communications

controller. AT commands program the functions of the

Command Prefix - Each command, except

the A/

analog and digital I/O lines. The AT commands used to

command, begins with the AT prefix. The "A" and "T"

program the SensorOnAir functions are then stored in

may be either both upper case or both lower case but

Flash memory. This allows the XE900SL10-N to be first

cannot be of different cases. The prefix identifies parity of

programmed and then installed in the application. The

the commands sent to the XE900SL10-N by comparing

communications controller uses the information stored in

the parity bits of the "A" and the "T" characters.

Flash memory to control the analog and digital I/O lines.

SensorOnAir only works in the XE900SL10-N

“Addressed” mode.

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XE900SL10-N

XE900SL10 COMMUNICATIONS CONTROLLER

SensorOnAirCommands ™

WIRELESSCOMMUNICATIONS

Below is a list of the AT commands used to program the

The XE900SL10-N communications controller manages

direct control of sensors using the communications

the RF Link. This includes the frequency hopping

controller in the XE900SL10.

algorithm for spread spectrum operation and node

addressing.

S107 - Defines the function of the programmable I/O lines.

The two analog input lines, ADC0 and ADC1, can

Carrier Sense MultipleAccess (CSMA)

also be defined as digital I/O lines if needed. The three

To prevent collisions between network nodes the

programmable digital I/O lines, DIO1, DIO2, and

XE900SL10usesaCarrierSenseMultipleAccessprotocol

DIO3; can be set as either inputs or outputs. The

for each network transceiver. In normal communications

value of this command is stored in flash memory.

all nodes, including the Master node in a point-to-

multipoint network, listen for communications activity

AT&IAn? - This command allows a local host to read the value

before initiating a session. If a wireless link already exists,

of Analog Input “n.”

the transceiver waits until that session is complete before

AT&IDn? - This command allows a local host to read the

initiating a wireless link.

status of Digital I/O “n.”

NodeAddressing

AT&IDn=z - This command allows a local host equipment to

The XE900SL10-N supports both addressed

set the condition of the local digital output “n.” When

communications and non-addressed communications. In

z=0 the output is set to a logic low; when z=1 the

the non-addressed operating mode each transceiver that

output is set to a logic high.

detects the RF carrier signal passes the received data

AT#IxxxxAn? - This command allows the value ofAnalog In-

through to the system. The system then determines if

put “n” on node address “xxxx” to be read remotely.

the data was intended for that node

AT#IxxxxDn? - This command allows the status of Digital I/O

The XE900SL10-N offers over 65,000 individual node

“n” on node address “xxxx” to be read remotely

address. The node address is set with register S105.

Separate networks can be arranged by assigning different

AT#IxxxxDn=z - This command allows the condition of the

frequency hopping schemes to the installed nodes.

local digital output “n” on node address “xxxx” to be

set remotely. When z=0 the output is set to a logic

hopping algorithms.

low; when z=1 the output is set to a logic high.

The XE900SL10-N also permits data to be broadcast to

all nodes simultaneously. The AT#B command causes

the subsequent transmissions to be broadcast

throughout the network.

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XE900SL10-N

AT COMMANDS

An asterisk indicates the factory default

Answer Command - forces the smart transceiver

&IDn? Read Local Digital Input “n” - This command

respond to a summons from another wireless device.

allows the host equipment to read the status of the local

digital inputs.

Initiate a Wireless Link - attempt to establish a link

with the transceiver at address n. If a “b” is inserted for

n=1 Read input DIO1

the address, the data will be broadcast.

n=2 Read input DIO2

Echo Characters - determines if the XE900SL10-N

n=3 Read input DIO3

will echo the characters received on its serial interface

n=4 Read input DIO4 (pin shared with ADC0)

during command mode.

n=5 Read input DIO5 (pin shared with ADC1)

n=0 Characters not Echoed

&IDn=z Set Local Digital Output “n” - This command

n=1 Characters Echoed *

allows the host equipment to set the condition of the

Identification - displays product identification code.

local digital outputs. When z=0 the output is set to a

logic low; when z=1 the output is set to a logic high.

n=0 Display Product Code

n=1 Set output DIO1

n=1 Display Product Name

n=2 Set output DIO2

n=2 Display Copyright

n=3 Set output DIO3

n=3 Display Firmware Revision

&Kn Flow Control - selects the type of flow control to be

Result Code Display - determines if result codes will

used between the system host and the XE900SL10-N

be displayed.

n=0 Flow Control Disabled

n=0 Display Result Codes *

n=3 RTS/CTS, hardware Flow Control *

n=1 Do not Display Result Codes

n=4 XON/XOFF, in-band Flow Control

Sn= Set Value of Register Sn

View Active Configuration - sends the active

Sn? Read Value of Register Sn

configuration data to the system host.

Response Type - selects Full Word or Numeric

&Wn Store Current Configuration - loads the current

responses

XE900SL10-N configuration into either User Profile 0

n=0 Numeric Responses

or User Profile 1.

n=1 Full Word Responses *

n=0 load configuration into User Profile 0

n=1 load configuration into User Profile 1

Reset - executes a soft Reset

n=0 Reset to Values Stored in User Profile 0 *.

Wireless Broadcast Mode - controls whether or not

the radio will receive wireless data broadcasts.

n=1 Reset to Values Stored in User Profile 1

n=0 ignore broadcast data