Solution Highlights
Power saving Wi-Fi modes
extend battery life
QCA4002/4 SoCs support power saving modes and
Quad SPI flash for faster wake time which minimizes
power consumption and extends battery life.
On-board wake-up manager to
further reduce sleep power
The onboard wake-up manager enables self-wake and
sleep management on QCA4002/4, which can further
reduce sleep power (down to microamps).
On-chip user development for
hostless applications
Developers can write simple applications directly
on the QCA4004, eliminating the need for a
standalone MCU.
Dual-band support for more
robust Wi-Fi connection
QCA4004 with dual-band connectivity for both
2.4GHz and 5GHz is well-suited for applications in
interference sensitive environments.
QCA4002 and QCA4004 are intelligent
connectivity Wi-Fi SoCs (System-on-Chip)
for the Internet of Things (IoT).
QCA4002 and QCA4004 are products of Qualcomm Technologies, Inc. and/or its subsidiaries.
Materials are subject to change without notice.
87-YB660-1 Rev B
QCA400x is an intelligent Wi-Fi platform for
the Internet of Things (IoT). This networking
platform is designed to enable customers to
add full-featured Wi-Fi to a wide variety of
products with minimal development eort
and cost.
The QCA4002 is a single-stream (1x1) IEEE
802.11n single-band SoC and QCA4004
is a dual-band SoC for the IoT. The highly
integrated Wi-Fi link includes an energy
ecient on-board power amplifier and
LNA. For the 2.4GHz band, RF switches are
also integrated. Both the QCA4002 and
QCA4004 are engineered to optimize low
system cost by minimizing the number of
components required to achieve a reliable
Wi-Fi link. In addition, the QCA4004 can
operate in a pure hostless mode of operation.
The QCA4002/4 SoCs provide two host
interfaces for connecting to local system
controllers. A UART-based host interface
can be used to support rapid development
and deployment of simple data streams
between the local device and the internet
cloud. An SPI secondary interface is available
for applications that require more advanced
connectivity to the network. It supports
a network stack along with SSL security
designed to enable full-featured internet
connectivity and reliable information
exchange in a small, low-cost system. It also
supports the AllJoyn connectivity soware
framework and services, allowing devices to
discover, connect and communicate directly
with one another.
Qualcomm
®
QCA4002/4
Wi-Fi SoCs
Features
IEEE 802.11n 1x1 single or dual-band
2.4GHz/5GHz
Single or dual Rx front end for receive
diversity
Integrated on-chip processor and memory
Cost optimized RBOM with integrated PA
and LNA
Full security support: WPS, WPA, WPA2
and WEP
SPI and UART host interface
Data rates up to 10Mbps
Integrated IPv4/IPv6 networking stack
Green Tx power savings and Low power
Rx listen
Low power modes:
IEEE Sleep with low power consumption
and optimal state transition times
Power optimized listen, receive, transmit
and associated operating modes
Suspend mode (QCA4004 only) for hostless
mode of operation with very low power
consumption
Store and recall
HTTP, DNS services
Manufacturing tools for configuration & test
AllJoyn soware ensures seamless
communication between devices,
enhancing ease-of-use for consumers
QCA4002/4 Target IoT Applications
• Remote Controls
• Smart Appliances
• Home Automation
• Energy Management
• Smart Lighting
• Home Security
QCA4002/4 Block Diagram
Product Part Number
QCA4002 SOC QCA-4002x-BL3A
QCA4004 SOC QCA-4004x-BL3A
Ordering Information
For additional product information and
updates go to: developer.qualcomm.com
/get-started/internet-of-things
©2018 Qualcomm Technologies, Inc. All Rights Reserved. Qualcomm is a trademark of Qualcomm Incorporated, registered in
the United States and other countries. Other product and brand names may be trademarks or registered trademarks of their
respective owners. 0418A
QCA4002/4 Specifications
Package Type
QCA4004 - SB/DB 8 x 8 mm 68-pin QFN
QCA4002 - SB/DB 7 x 7mm 58-pin QFN
PCB Footprint (solution area)
QCA4004
< 42 x 20 mm DB
single sided + antenna + Diversity + S-Flash
QCA4002
< 25 x 20 mm SB
single sided + antenna + S-Flash
WLAN Technology 802.11a/b/g/n
Antenna Design Options UFL Chip or PCB printed
Interfaces USB 2.0 for manufacturing test
SPI/SDIO, UART, HS-UART, I
2
C, I
2
S, GPIOs
Frequency Bands
QCA4004 -
2.4GHz/5GHz dual-band
QCA4002 -
2.4GHz single-band
Active Power Save Green Tx & Low Power Listen (LPL)
Security Features WPS, WPA, WPA2, WEP, SSL
Power Source 3.3V
Network Throughput up to 10Mbps
Operating Temperature Commercial: 0˚ to 85˚C (case)
Industrial: -40˚ to 85˚C (ambient)
-40˚ to 105˚C (case)