RN171 datasheet(3/30 Pages) MICROCHIP

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 2014-2016 Microchip Technology Inc.

DS70005171B-page 3

RN171

1.0

DEVICE OVERVIEW

The RN171 is a standalone, 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 RN171, designers can embed

Wi-Fi and networking functionality rapidly into virtually

any device.

The RN171 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 RN171 is configured with a simple ASCII com-

mand language. The “WiFly Command Reference,

Advanced Features and Applications User's Guide

”

(DS50002230) contains a complete listing and

instructions of the ASCII command interface.

In the simplest configuration, the module requires only

power, ground, and UART TX and RX connections.

The RN171 module can interface to low-cost microcon-

trollers using only two wires, UART TX and RX.

The RN171 has a versatile sensor interface that can be

used to monitor analog signals such as temperature,

audio, motion, and acceleration.

The module has a small form factor, which makes it

easy to integrate. Additionally, the module is compati-

ble with standard pick-and-place equipment.

The RN171 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 sensor

applications.

The RN171 can independently maintain a low-power

wireless network connection. Ultra-low power usage

and flexible power management maximize the mod-

ule’s lifetime in battery-operated devices. A wide oper-

ating temperature range allows use in indoor and

outdoor environments (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 RN171 has modular device approval for operation

in the United States (FCC) and Canada (IC). The

RN171 module is an R&TTE Directive assessed radio

module for operation in Europe.

FIGURE 1-1:

RN171 BLOCK DIAGRAM

128-KB

RAM

2.4-GHz

Radio

2.4-GHz

Crypto-

accelerator

32-Bit

CPU

802.11 b/g

MAC/PHY

ADC

2-MB ROM

Timers

SPI

GPIO

SDIO

Sensor Interface

Power

Management

Flash

Memory

SPI

GPIO

UART

VDD IN

VDD BATT

2.4 GHz

TX/RX

External

Antenna

RN171

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