RN1723
2.4 GHz IEEE Std. 802.11 b/g Wireless LAN Module
Key Features:
• Complete, Embedded 2.4 GHz IEEE 802.11 b/g
Wireless LAN Module
• 14 General Purpose Input/Output (GPIO) Pins
(Four GPIO pins shared with the UART)
• Eight Analog Sensor Inputs
• Small Surface-Mount Module: 1.050” x 0.700” x
0.125” (26.67 mm x 17.78 mm x 3.18 mm)
• Integrated Crystal, Internal Voltage Regulator,
Matching Circuitry, Power Amplifier
• Integrates Easily into Final Product – Minimizes
Product Development, Provides Quicker Time to
Market
• Configured using Simple ASCII Commands
• Networking:
- Supports Infrastructure and SoftAp
Networking Modes
- Built-in Networking Applications: TCP, UDP,
DHCP, DNS, ARP, HTTP Client, and FTP Client
- Complete On-Board TCP/IP Networking
Stack
- Unique MAC Address
- Upgrade Firmware Over-the-Air using FTP
- Supports Wi-Fi
®
Protected Setup (WPS)
FIGURE 1:
RN1723 MODULE
Media Access Control (MAC)/Baseband:
• Security:
- WEP-128
- WPA-PSK (TKIP)
- WPA2-PSK (AES)
- TLS 1.0, 1.1, and 1.2 (with external microprocessor)
Operational:
• Operating Voltage: 3.3V (typical)
• Temperature Range: -40°C to +85°C Industrial
• Low Current Consumption:
- RX mode: 40 mA
- TX mode: 120 mA at 0 dBm
- Sleep mode: 4 µA
- Doze mode: 15 mA
Power Management:
•
•
•
•
Ultra Low-Power Sleep Mode (4 µA)
Perfect for Portable Battery-Operated Devices
Battery Boost Control Circuitry
Real-Time Clock for Time Stamping, Auto-Sleep,
and Auto-Wake
RF/Analog:
• Frequency: 2.412 to 2.462 GHz
• Modulation:
- 802.11b Compatibility: DSSS (CCK-11,
CCK-5.5, DQPSK-2, DBPSK-1)
- 802.11g: OFDM
- Receive Sensitivity: -83 dBm Typical
- Power Output: 0 to +12 dBm
Antenna:
• External Antenna Connection via RF Pad
• Certified Antenna Types: Chip, Whip, PCB Trace,
and Wire
Compliance:
• Modular Certified for the United States (FCC) and
Canada (IC)
• European R&TTE Directive Assessed Radio
Module
• Australia and New Zealand
Over-the-Air Data Rate:
• 1-11 Mbps for 802.11b
• 6-54 Mbps for 802.11g
Applications:
•
•
•
•
•
Remote Equipment Monitoring
Telemetry
Industrial Sensors
Home Automation
Low-Power Battery Operations
2015 Microchip Technology Inc.
DS70005224A-page 1
RN1723
Table of Contents
1.0
2.0
3.0
4.0
5.0
Device Overview .......................................................................................................................................................................... 3
Circuit Description (Hardware Interface) ...................................................................................................................................... 9
Application Information ............................................................................................................................................................... 15
Regulatory Approval................................................................................................................................................................... 17
Electrical Characteristics ............................................................................................................................................................ 23
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The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).
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DS70005224A-page 2
2015 Microchip Technology Inc.
RN1723
1.0
DEVICE OVERVIEW
The RN1723 is a stand-alone, embedded 802.11 b/g
Wireless Local Area Network (WLAN) module. The
module incorporates an on-board TCP/IP networking
stack, cryptographic accelerator, power management
subsystem, real-time clock, versatile sensor interface,
2.4 GHz transceiver, and RF power amplifier (see
Figure 1-1).
With the RN1723, designers can embed
Wi-Fi and networking functionality rapidly into virtually
any device.
The RN1723 provides cost and time-to-market savings
as a self-contained, Internet-enabling solution. The
module has been designed to provide designers with a
simple Wi-Fi solution that features:
•
•
•
•
•
Ease of integration and programming
Vastly reduced development time
Minimum system cost
Long battery life
Maximum value in a range of applications
The module has a small form factor, which makes it
easy to integrate. Additionally, the module is
compatible with standard pick-and-place equipment.
The RN1723 is ideal for a vast range of applications
that require long battery life, moderate processing
power, moderate data throughput and occasional Wi-Fi
connectivity, such as:
•
•
•
•
•
Real-Time Locationing Systems (RTLS)
Industrial and home automation
Health and fitness monitoring
Telemetry
Security
Additionally, the module is perfect for mobile wireless
applications, such as asset monitoring and sensors.
The RN1723 can independently maintain a low-power
wireless network connection. Ultra-low power usage
and flexible power management maximize the
module’s lifetime in battery-operated devices. A wide
operating temperature range allows use in indoor and
outdoor environments (i.e., industrial temperature
range).
When operating in Sleep mode, the module minimizes
battery usage while still being able to respond to certain
events, including internal timers and events on the sen-
sor interfaces. Applications that make efficient use of
the Sleep state can extend battery life to multiple years.
The RN1723 has modular device approval for
operation in the United States (FCC) and Canada (IC).
The RN1723 module is an R&TTE Directive assessed
radio module for operation in Europe. Refer to
Section 4.0 “Regulatory Approval”
for more
information.
The RN1723 is configured with a simple ASCII com-
mand language. The “WiFly
Command Reference,
Advanced Features and Applications User's Guide”
(DS50002230), which is available for download from
www.microchip.com,
contains a complete listing and
instructions of the ASCII command interface.
In the simplest configuration, the module requires only
power, ground, and UART Transmit (TX) and Receive
(RX) connections. The RN1723 module can interface
to low-cost microcontrollers using only two wires,
UART TX and RX.
The RN1723 has a versatile sensor interface that can
be used to monitor analog signals such as
temperature, audio, motion, and acceleration.
FIGURE 1-1:
RN1723 MODULE BLOCK DIAGRAM
RN1723
External
Antenna
2.4 GHz
TX/RX
128 KB
RAM
2.4 GHz
Radio
32-bit
CPU
2 MB ROM
Flash
Memory
Timers
802.11 b/g
MAC/PHY
2 KB NVM
SPI
GPIO
UART
V
DD
IN
V
DD
BATT
2.4 GHz
PA
Crypto
Accelerator
SPI
ADC
Power
Management
GPIO
Sensor Interface
UART
2015 Microchip Technology Inc.
DS70005224A-page 3
RN1723
1.1
ASCII Command & Data Interface
1.2
Interface Description
A complete description of the ASCII command and
data interface for the RN1723 module is provided in the
“WiFly
Command Reference, Advanced Features and
Applications User's Guide”
(DS50002230).
Figure 1-1
shows the RN1723 pin diagram.
Figure 1-3
shows the microcontroller to RN1723 interface.
Table 1-1
describes the RN1723 pins.
FIGURE 1-2:
RN1723 PIN DIAGRAM
RN17
(Top View)
FIGURE 1-3:
MICROCONTROLLER TO RN1723 INTERFACE
MCU
RN1723
UART
TX
RX
RTS
CTS
RX
TX
UART
CTS
(1)
RTS
(1)
Note 1:
Hardware flow control signals CTS and RTS should be used for
baud rates of 115200 or greater.
DS70005224A-page 4
2015 Microchip Technology Inc.
RN1723
TABLE 1-1:
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
GND
ISP_TX
ISP_RX
GPIO9/SD_CLK/SCLK
GPIO8/SD_D3/SS
GPIO7/SD_D2
GPIO6/SD_D1/INT
GPIO5/SD_D0/MISO
GPIO4/SD_CMD/MOSI
VDD
GPIO3
GPIO2
GPIO1
GND
SPI_CS
SPI_MISO
SPI_SCK
SPI_MOSI
FLASH_POWER
GND
GND
GND
GND
ANT
GND
GND
GND
GND
SENSOR0
SENSOR1
SENSOR2
SENSOR3
SENSOR_POWER
VDD
SENSOR4
SENSOR5
PIN DESCRIPTIONS
Name
Type
P
DO
DI
DIO
DIO
DIO
DIO
DIO
DIO
P
DIO
DIO
DIO
P
DO
DI
DO
DO
P
P
P
P
P
AIO
P
P
P
P
AI
AI
AI
AI
P
P
AI
AI
Ground reference
In-system programming transmit
In-system programming receive
General purpose I/O 9
(1,2)
/SDIO clock/SD-SPI slave SCLK
General purpose I/O 8
(1,3)
/SDIO D3/SD-SPI slave select
General purpose I/O 7
(1,3)
/SDIO D2
General purpose I/O 6
(1,3)
/SDIO D1/SD-SPI slave INT
General purpose I/O 5
(1,3)
/SDIO D0/SD-SPI slave MISO
General purpose I/O 4
(1,3)
/SDIO CMD/SD-SPI slave MOSI
Positive supply
General purpose I/O 3
(1,1)
General purpose I/O 2
(1,2)
General purpose I/O 1
(1,2)
Ground reference
SPI master chip select to internal Flash memory chip select (do not
connect)
SPI master data Input to internal Flash memory data output (do not
connect)
SPI master clock to internal Flash memory clock (do not connect)
SPI master data output to internal Flash memory data input (do not
connect)
Internal Flash memory power
Ground reference
Ground reference
Ground reference
Ground reference
RF antenna. 50 impedance
Ground reference
Ground reference
Ground reference
Ground reference
Sensor interface 0
(4)
Sensor interface 1
(4)
Sensor interface 2
(4)
Sensor interface 3
(4)
Sensor power
Positive supply
Sensor interface 4
(4)
Sensor interface 5
(4)
Description
Legend:
A = Analog;
D = Digital;
I = Input;
O = Output
P = Power
Note 1:
Refer to
Section 5.0 “Electrical Characteristics”
for the GPIO voltage and current limitations.
2:
Digital input/output (bidirectional) 8 mA drive, ~83 K internal pull-down. 3.3V tolerant.
Reset State: Pull-down.
3:
Digital input/output (bidirectional) 24 mA drive, no internal pull-down. 3.3V tolerant.
Reset State: High-Z (do not allow to float).
4:
Analog input. 0-400 mV (do not exceed 1.2V DC).
2015 Microchip Technology Inc.
DS70005224A-page 5
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