
Part Number: WiFi3309701
Ultra Low-Power 802.11b Transceiver
Module
OEM User Manual
FCC ID: W3I-WIFI3309701
IC: 8266A-WIFI3309701
Revision 02
March 12, 2009

Rev02
Copyrights
Copyright 2009 by Cypress Envirosystems. All rights reserved. The information in this
document is subject to change without notice. While reasonable precautions have been
taken, Cypress assumes no responsibility for any errors that may appear in this
document. No part of this document may be copied or reproduced in any form or by any
means without the prior written consent of Cypress.
Disclaimer
CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH
REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. Cypress reserves the right to make changes without further notice to the
materials described herein. Cypress does not assume any liability arising out of the
application or use of any product described herein. Cypress does not authorize its
products for use in mission or safety critical systems or where a malfunction or failure
may reasonably be expected to result in significant injury to the user. The inclusion of
‘Cypress’ product in mission or safety critical system applications implies that the
manufacturer assumes all risk of such use and in doing so indemnifies Cypress against
all charges. In no event is Cypress liable to anyone for any indirect, special or
consequential damages.
Cypress Envirosystems OEM User Manual Page 2

Rev02
ELECTRICAL PERFORMANCE
Absolute Maximum Ratings
Parameters Symbol Min. Typical Max. Units
Storage Temp T
Supply Voltage V
ST
RTC, Vbat
Operating Conditions
Parameters Symbol Min. Typical Max. Units
Extended Temp T
Supply Voltage V
Supply Current 60 mA
Sleep Current 7.2 mA
Deep Sleep 110 uA
Standby Current 5 uA
A
RTC, Vbat
Power Consumption
Parameters Voltage Current Power Units
Standby (RTC only)
Deep Sleep
Processor Sleep 1.8 7.2mA 13 mW
WLAN CPU 22MHz running from Flash 1.8 21.5mA 38.8 mW
APP CPU running form FLASH**
11MHz
22MHZ
44MHz
APP CPU running form RAM**
11MHz
22MHZ
44MHz
Both CPUs running from FLASH 1.8 31.1mA 62.2 mW
Listen Mode 1.8
Receive Mode 1.8
Transmit Mode (internal PA = 9dBm)**
External PA = 20dBm**
Program Flash 1.8 3.2mA 6.4 mW
Notes:
* Accounts for 1.8V I
** Accounts for 90% switching efficiency of the 1.8V switcher.
=20uA typ and 3.3V Iq=20uA typ.
q
-55 +125 °C
-0.5 4.0 V
-40 +85 °C
1.2 3.6 V
1.2
1.5
2.4
2.2
3.6
1.8
3.3
1.8
1.8
3.3
3.3
1.8
3.3
1.8
3.3
1.17uA
1.34uA
3.79uA
4.7uA
5.0uA
130uA*
20uA*
13.4mA
17.2mA
22.8mA
10.1mA
13.3mA
21.2mA
150mA
100uA
144mA
100uA
152mA
90mA
152mA
200mA
1.4
2.01
9.1
15.5
18
.260**
.060
26.8
34.4
45.6
20.2
26.7
42.4
300
.300
289
.300
304
330
304
733
uW
mW
mW
mW
mW
mW
mW
Cypress Envirosystems OEM User Manual Page 3