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©2009-2010 by RF Monolithics, Inc. WSN802GCA/PA - 10/05/10
WSN802GCA
WSN802GPA
Rating Value Units
Input/Output Pins Except ADC Inputs -0.5 to +3.63 V
ADC Input Pins -0.5 to 1.98 V
Non-Operating Ambient Temperature Range -40 to +85 oC
WSN802G Absolute Maximum Ratings
WSN802G Electrical Characteristics
Characteristic Sym Notes Minimum Typical Maximum Units
Operating Frequency Range 2401 2474 MHz
Spread Spectrum Method Direct Sequence
RF Chip Rate 11 Mcps
RF Data Rates 1, 2, 5.5 and 11 Mbps
Modulation Type BPSK at 1 Mbps, QPSK at 2 Mbps,
CCK at 5.5 and 11 Mbps
Number of RF Channels 11
RF Channel Spacing 5 MHz
Receiver Sensitivity, 8% PER:
1 Mbps RF Data Rate -92 dBm
2 Mbps RF Data Rate -90 dBm
5.5 Mbps RF Data Rate -84 dBm
11 Mbps RF Data Rate -81 dBm
RF Transmit Power EIRP 10 mW
Antenna Integral Chip Antenna
·Small Size, Integral Antenna, Light Weight, Low Cost
·7.5 µA Sleep Current Supports Battery Operation
·Timer and Event Triggered Auto-reporting Capability
·Analog, Digital, Serial and SPI I/O for Sensor Applications
·-40 to +85 oC Operating Temperature Range
·FCC, Canadian IC and ETSI Certified for Unlicensed Operation
WSN802GCA and WSN802GPA transceiver modules are low cost, robust solutions for
802.11g sensor networks. The very low sleep current required by these modules makes
long life battery operation practical. The WSN802G modules include analog, digital,
serial and SPI I/O, providing the flexibility and versatility needed to serve a wide range
of sensor network applications. WSN802GCA and WSN802GPA modules are easy to
integrate, require no external antennas and are compatible with standard 802.11b/g
access points.
802.11g
Wireless
Sensor
Network
Modules
DEVELOPMENT KIT
(Info Click here)
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Characteristic Sym Notes Minimum Typical Maximum Units
ADC Input Range 0 1.8 V
ADC Input Resolution 10 bits
ADC Input Impedance 1 MW
PWM Output Resolution 16 bits
Data Serial Port Baud Rates 1.2, 2.4, 4.8, 9.6 (default), 19.2, 28.8, 38.4, 57.6,
76.8, 115.2, 230.4, 460.8, 921.6 kbps
Diagnostic Serial Port Baud Rates 1.2, 2.4, 4.8, 9.6 (default), 19.2, 28.8, 38.4,
57.6, 76.8, 115.2 kbps
Serial Peripheral Interface (SPI) Data Rate, Master Mode 11 Mbps
Serial Peripheral Interface (SPI) Data Rate, Slave Mode 2 Mbps
Digital I/O:
Logic Low Input Level -0.3 0.7 V
Logic High Input Level 2.24 VCC V
Input Pull Up Resistor 50 1000 KW
Logic Low Output Level 0 0.4 V
Logic High Output Level 2.4 VCC V
Power Supply Voltage Range VCC +3 +3.63 Vdc
Power Supply Voltage Ripple 10 mVP-P
Receive Mode Current 150 mA
Transmit Mode Current 200 mA
Sleep Mode Current 7.5 µA
WSN802GCA Mounting Reflow Soldering
WSN802GPA Mounting Socket
Operating Temperature Range -40 85 oC
Operating Relative Humidity Range, Non-condensing 10 90 %
WSN802G Electrical Characteristics
CAUTION: Electrostatic Sensitive Device. Observe precautions when handling.
WSN802GCA/WSN802GPA Hardware
The WSN802GCA and WSN802GPA operate in the inter-
national 2.4 GHz ISM band over the frequency range of
2401-2474 MHz, with a nominal RF output power of
10 mW and a nominal antenna gain of 0 dBi. WSN802G
modules support four standard 802.11g RF data rates -
1, 2, 5.5 and 11 Mbps.
The WSN802G transceiver module provides a variety of
hardware interfaces. There are two serial interfaces, one
for data and a second for diagnostics. The data port sup-
ports standard serial baud rates from 1.2 to 921.6 kbps,
with optional hardware flow control. The diagnostic port
supports standard baud rates from 1.2 to 115.2 kbps.
The WSN802G also includes an SPI port that supports
data rates up to 2 Mbps in slave mode, and up to
11 Mbps in master mode.
The WSN802G includes two 10-bit ADC inputs, one
16-bit PWM (DAC) output, and four general purpose I/O
(GPIO) ports to support sensor network applications.
WSN802G modules with integral antenna are available in
two mounting configurations. The WSN802GCA is de-
signed for solder reflow mounting, and the WSN802GPA
is designed for plug-in connector mounting.
Rev F WSN802G Firmware
The major firmware components in the WSN802G in-
clude the 802.11g stack and the application protocol.
The WSN802G acts as a UDP client to a data and/or
sensor application running on a network server.
The application protocol supports three operating modes:
(1) sleeping sensor node with timer or interrupt auto-
reporting, (2) sleeping serial data node with timer or inter-
rupt wake-up and (3) always on sensor or serial data
node with auto-reporting. Modes 1 and 2 take full advan-
tage of the very low sleep current capability of the
WSN802G. The module sleeps unless the WAKE_IN
input is asserted or the AutoReport timer fires. A Wake-
Timeout timer is provided to hold the module awake for
a configurable period. The WakeTimout timer is held in
reset as long as WAKE_IN is asserted, serial data is
being received, an RF packet is being sent or received,
or if the module is uncommissioned.
The WSN802G asserts WAKE_OUT whenever it is
awake to notify its external host. The module also sends
an I/O status report automatically each time WAKE_IN is
asserted, and/or each time the AutoReport timer fires.
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©2009-2010 by RF Monolithics, Inc. WSN802GCA/PA - 10/05/10
1 8 1 9 2 0 2 1 2 2 2 31 71 6 2 4 2 5 2 6
1 5
1 4
1 3
1 2
1 1
1 0
9
8
7
6
5
W S N 8 0 2 G C A / W S N 8 0 2 G P A B l o c k D i a g r a m
2 7
802.11g
L o w C u r r e n t
Transceiver
4
3
2
1
R e g
F i l t e r
G N D
D I A G _ T X
D I A G _ R X
G P I O 0
R A D I O _ T X D
R A D I O _ R X D
/ H O S T _ C T S
/ H O S T _ R T S
P W M 0
G P I O 2
G P I O 1
G P I O 3
R S V D
V C C
G N D
4 4 M H z3 2 . 7 6 8 k H z
G N D
/ R E S E T
ADC1
M I S O
M O S I
/ S S
S C L K
3 . 3 V _ O U T
ADC REF
W A K E _ I N
W A K E _ O U T
ADC0
B a l u n
&
B P F
R e g
+ 3 . 3 V
+ 1 . 8 V 2 8 2 9 3 0
G N D
G N D
R S V D
Figure 1
Pin Name I/O Description
1 GND - Power supply and signal ground. Connect to the host circuit board ground.
2 DIAG_TX O Diagnostic serial port output.
3 DIAG_RX I Diagnostic serial port input.
4 GPIO0 I/O Configurable digital I/O port 0. An internal weak pull up is provided when configured as an input.
5 RADIO_TXD O Serial data output from the radio.
6 RADIO_RXD I Serial data input to the radio.
7 /HOST_CTS O UART/SPI flow control output. The module sets this line low to indicate it is ready to accept data from the host
on the RADIO_RXD or MOSI input. When the module sets this line high, the host must stop sending data.
8 /HOST_RTS I UART flow control input. The host sets this line low to allow data to flow from the module on the RADIO_TXD
pin. When the host sets this line high, the module will stop sending data to the host.
9 PWM0 O 16-bit pulse-width modulated output 0 with internal low-pass filter. Filter is first-order, with a 159 Hz 3 dB
bandwidth, 10K output resistance.
10 GPIO2 I/O Configurable digital I/O port 2. An internal weak pull up is provided when configured as an input.
11 GPIO1 I/O Configurable digital I/O port 1. An internal weak pull up is provided when configured as an input.
12 GPIO3 I/O Configurable digital I/O port 3. An internal weak pull up is provided when configured as an input.
13 RSVD - Reserved pin. Leave unconnected.
14 VCC I Power supply input, +3.0 to +3.63 Vdc.
15 GND - Power supply and signal ground. Connect to the host circuit board ground.
16 GND - Power supply and signal ground. Connect to the host circuit board ground.
17 /RESET I Active low module hardware reset.
18 ADC0 I 10-bit ADC input 0. ADC full scale reading can be referenced to the module’s +1.8 V regulated supply.
19 ADC1 I 10-bit ADC input 1. ADC full scale reading can be referenced to the module’s +1.8 V regulated supply.
20 MISO I/O SPI master in, slave out function. This pin is an input when the module is operating as a master, and is an
output when the module is operating as a slave.
21 MOSI I/O SPI master out, slave in function. This pin is an output when the module is operating as a master, and is an
input when the module is operating as a slave.
22 /SS I/O SPI active low slave select. This pin is an output when the module is operating as a master, and an input
when it is operating as a slave.
23 SCLK I/O SPI clock signal. This pin is an output when operating as a master, and an input when operating as a slave.
24 3.3V_OUT O Module’s +3.3 V regulated supply, available to power external sensor circuits. Current drain on this output
should be no greater than 50 mA.
25 ADC_REF O Module’s +1.8 V regulated supply, used for ratiometric ADC readings. Current drain on this output should be
no greater than 10 mA.
26 WAKE_IN I Active high interrupt input to wake the module from timer sleep. Can be used to wake module on event, etc.
27 WAKE_OUT O Active high output asserted when module wakes from timer sleep. Can be used to wake an external device.
28 GND - Connect to the host circuit board ground plane.
29 RSVD - Reserved pin. Leave unconnected.
30 GND - Connect to the host circuit board ground plane.
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WSN802G I/O Pad Descriptions
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©2009-2010 by RF Monolithics, Inc. WSN802GCA/PA - 10/05/10
0 . 0 3 0 ( 0 . 7 6 )
0 . 0 4 0
( 1 . 0 2 )
1 . 1 5 0
( 2 9 . 2 )
0 . 9 8 0
( 2 4 . 9 )
W S N 8 0 2 G C A O u t l i n e a n d M o u n t i n g D i m e n s i o n s
0 . 0 5 0 ( 1 . 2 7 )
1
T o p V i e w
0 . 1 2 5
( 3 . 1 8 )
1 5
1 6 3 0
D i m e n s i o n s i n i n c h e s ( m m )
0 . 0 5 0 ( 1 . 2 7 )
0 . 1 2 5
( 3 . 1 8 )
Figure 2
0 . 0 6 0
( 1 . 5 2 )
1 . 1 5 0
( 2 9 . 2 )
0 . 9 6 0
( 2 4 . 4 )
W S N 8 0 2 G C A S o l d e r P a d D i m e n s i o n s
0 . 0 5 0 ( 1 . 2 7 )
1
T o p V i e w
1 5
1 6 3 0
D i m e n s i o n s i n i n c h e s ( m m )
0 . 0 3 5 ( 0 . 8 9 )
1 . 0 4 0
( 2 6 . 4 )
0 . 0 5 0
( 1 . 2 7 )
Figure 3
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0 . 0 6 0
( 1 . 5 2 )
1 . 1 5 0
( 2 9 . 2 )
1 . 1 0 0
( 2 7 . 9 )
W S N 8 0 2 G P A O u t l i n e a n d M o u n t i n g D i m e n s i o n s
0 . 0 5 0 ( 1 . 2 7 )
1
T o p V i e w
0 . 1 2 5
( 3 . 1 8 )
1 5
1 6 3 0
D i m e n s i o n s i n i n c h e s ( m m )
0 . 0 5 0 ( 1 . 2 7 )
0 . 1 2 5 ( 3 . 1 8 )
0 . 2 2 5
( 5 . 7 2 )
0 . 9 8 0
( 2 4 . 9 )
Figure 4
0.980
( 2 4 . 9 )
0.050
( 1 . 2 7 )
0.700
( 1 7 . 8 )
0.100
( 2 . 5 4 )
0.800
( 2 0 . 3 )
W S N 8 0 2 G P A I n t e r f a c e C o n n e c t o r
P C B L a y o u t D e t a i l
C o n n e c t o r s a r e S A M T E C
S L M - 1 1 5 - 0 1 - G - S
o r E q u i v a l e n t
D i m e n s i o n s a r e i n i n c h e s ( m m )
Figure 5
Note: Specifications subject to change without notice.
Part # M-0802-1005, Rev C
