8-, 16- and 32-bit Microcontrollers/Microprocessors
TWR-WIFI-AR4100
Tower System 802.11n Wi-Fi
®
module
Overview
The TWR-WIFI-AR4100 peripheral module provides an ultra low-power wireless
solution with 802.11n Wi-Fi
®
connectivity using the Freescale Tower System. This
fully FCC- and CE-certified Qualcomm Atheros system-in-package module comes
with MQX™ software and enables you to quickly go from the lab to production with
the same Wi-Fi hardware module.
The on-board Qualcomm Atheros silicon features easy-to-use wireless connectivity
for the entire home, and pre-certification will save you time and money in getting your
product to market.
This peripheral module is designed to be combined and used with other
microcontroller and peripheral modules in the Tower System.
Features
• ltra low-power AR4100 802.11n
U
Wi-Fi system-in-package solution from
Qualcomm Atheros
• Low energy and low system resource
requirements
• Integrated RF front end, RF shield, 32 kHz
sleep clock and system clock
• Best-in-class Rx sensitivity for superior
throughput rate-over-range performance
• Integrated high-power, high-efficiency
power amplifier
• Low-density parity check (LDPC) encoding
for improved uplink robustness over range
• Space time code blocking (STBC) for
improved downlink robustness over range
• Wi-Fi protected setup (WPS) 2.0
• FCC and Wi-Fi certified
• Compatible with the Tower System,
including MQX-based driver support
• SPI interface to Tower MCU modules
• On-board SPI flash for enabling minimal
impact to MCU resources
• Access to expansion GPIO and debug
signals for advanced development
The Freescale Tower System
Controller Module
• Tower MCU/MPU board
• Works stand-alone or in
Tower System
• Features integrated
debugging interface for
easy programming and
run control via standard
USB cable
Primary Elevator
• Common serial and
expansion bus signals
• Two 2x80 connectors
on backside for easy
signal access and
side-mounting board
(LCD module)
• Power regulation
circuitry
• Standardized signal
assignments
• Mounting holes
Board Connectors
• Four card-edge
connectors
• Uses PCI Express
®
connectors
(x16, 90 mm/
3.5” long, 164 pins)
Secondary Elevator
• Additional and
secondary serial and
expansion bus signals
• Standardized signal
assignments
• Mounting holes and
expansion connectors
for side-mounting
peripheral boards
Size
• Tower is approx. 3.5” H x 3.5” W
x 3.5” D when fully assembled
Peripheral Module
• Examples include serial interface module,
memory expansion module and Wi-Fi
®
Tower Geeks Online Community
TowerGeeks.org
is an online design
engineer community that allows members to
interact, develop designs and share ideas.
Offering a direct path to explore and interact
Follow Tower Geeks on Twitter
twitter.com/towergeeks
with other engineers designing with the
Tower System,
TowerGeeks.org
is a great
way to discuss your projects, post videos
of your progress, ask questions through the
forum and upload software. With updates
through Twitter and Facebook, it’s easy to
get involved.
Visit Freescale on Facebook
facebook.com/freescale
For more information, visit
freescale.com
Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. The Power Architecture
and Power.org word marks and the Power and Power.org logos and related marks are trademarks and service marks licensed by
Power.org. All other product or service names are the property of their respective owners. ©2011 Freescale Semiconductor, Inc.
Document Number: AR4100FS REV 1
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