SS12-TPCT-ND_技术文档

RN-171-DS

ꢀ

RN-171 802.11 b/g Wireless LAN Module

Features

•

FCC/CE/IC certified 2.4-GHz IEEE 802.11b/g

transceiver

•

Small form factor: 1050 x 700 x 130 mil

Configurable transmit power: 0 to 10 dBm

RF pad connector for antennas

Certified antennas: chip antenna, 4” dipole, PCB

trace, and wire antenna

ꢀ

•

Ultra-low power: 4-uA sleep, 38-mA Rx, 120-mA Tx

at 0 dBm

Description

High throughput: 921 Kbps TX, 500 Kbps RX data

rate with TCP/IP and WPA2 over UART, up to

2 Mbps over SPI slave

The RN-171 module is a complete, standalone TCP/IP

wireless networking module. With its small form factor

and extremely low power consumption, the RN-171 is

perfect for mobile wireless applications such as asset

monitoring, sensors, and portable battery operated

devices. It incorporates a 2.4-GHz radio, 32-bit SPARC

processor, TCP/IP stack, real-time clock, crypto

accelerator, power management, and analog sensor

interfaces.

•

8-Mbit flash memory and 128-KB RAM

10 general-purpose digital I/O pins

8 analog sensor interfaces

Real-time clock for wakeup and time stamping

Accepts 3.3-V regulated power supply or 3-V

battery

The module is preloaded with firmware to simplify

integration and minimize application development. In

the simplest configuration, the hardware only requires

four connections (PWR, TX, RX, and GND) to create a

wireless data connection. Additionally, the analog sensor

inputs can connect to a variety of sensors such as

temperature, audio, motion, and acceleration. The ability

to go into deep sleep mode and automatically scan and

associate to an access point when awake makes the

RN-171 suitable for roaming applications. The RN-171

also includes a built-in HTML client to post serial UART

data or sensor data to a web server automatically.

•

Supports ad hoc and infrastructure networks

Complete on-board TCP/IP networking stack

Environmentally friendly: RoHS compliant

Applications

•

Remote equipment monitoring

Telemetry

Industrial sensors and home automation controls

Home automation

Figure 1. RN-171 Block Diagram

RN-171

Trace for

PCB Antenna

128-KB

RAM

32-Bit

CPU

2-MB ROM

Flash

Memory

2.4 GHz

TX/RX

2.4-GHz

Radio

Timers

802.11 b/g

MAC/PHY

SPI

GPIO

UART

SPI

2.4-GHz

PA

VDD IN

VDD BATT

GPIO

SDIO

Crypto

accelerator

Pwr

Mgmt

ADC

Sensor Interface

ꢀ

www.rovingnetworks.com

Version 3.21 10/2/2012

1

RN-171

ꢀ

OVERVIEW

•

Host data rates up to 921 Kbps TX, 500 Kbps RX for the UART, up to 2 Mbps over the SPI slave

Intelligent, built-in power management with programmable wakeup

Real-time clock for time stamping, auto-sleep, and auto-wakeup

Configuration using simple ASCII commands

Software controlled transmit power (0 to 10 dBm) for ultra-low-power applications

Memory: 128-KB RAM, 2-MB ROM, 2-KB battery-backed memory, 8-Mbit flash

Secure Wi-Fi authentication using WEP-128, WPA-PSK (TKIP), and WPA2-PSK (AES)

Built-in networking applications: DHCP, UDP, DNS, ARP, ICMP, TCP, and HTML client

802.11 power save and roaming functions

Castellated pads for reliable soldering

The module’s moisture sensitivity level (MSL) is 1. The modules size and weight are:

•

Size—1.06 x 0.70 x 0.12 inches (27 x 18 x 3.1 mm)

Weight—0.09 oz

Tables 1 through 5 provide detailed specifications for the module.

Table 1. Environmental Conditions

Parameter

Temperature Range (Operating)

Temperature Range (Storage)

RN-171

-40 ^oC ~ +85 ^oC

-40^oC ~ +85 ^oC

Relative Humidity (Operating)

Relative Humidity (Storage)

≤90%

ꢀ

Table 2. Electrical Characteristics (Provisional)

Supply Voltage

Supply voltage (VBATT option)

Digital input

Min.

Typ.

Max.

Units

3.0

3.3

3.7

VDC

Input logic high VIH

Input logic low VIL

Digital Output Drive

GPIO 4, 5, 6, 7, 8

2.3

VDC

1.0

24

8

mA

GPIO 9, 10, 11, 12, 13

Power Consumption

Sleep

4

uA

mA

Standby (doze)

-

15

-

Connected (idle, RX)

40

0 dBm

120

190

Connected (TX)*

12 dBm

ꢀ

www.rovingnetworks.com

Version 3.21 10/2/2012

2

RN-171

ꢀ

Table 3. Analog Sensor Inputs

Parameter

Sensor 0, 1, 2, 3 wakeup detection threshold

AD sensor 0 - 7 measurement range

Resolution

Value

500 mV

0 - 400 mV (Do not exceed 1.2-V DC)

14 bits = 12uV

Accuracy

5% un-calibrated, .01% calibrated

35 us (5 kHz over Wi-Fi)

Minimum conversion time

Sensor power (pin 33) output resistance 3.3V

10 ohms, maximum current = 50 mA

Table 4. Radio Characteristics

Parameter

Specifications

Frequency

2,402 ~ 2,480 MHz

802.11b compatibility: DSSS (CCK-11, CCK-5.5, DQPSK-2, DBPSK-1)

802.11g: OFDM (default)

Modulation

Channel intervals

5 MHz

Channels

1 – 14

Transmission rate (over the air)

Receive sensitivity

Output level (class1)

1 – 11 Mbps for 802.11b / 6 – 54 Mbps for 802.11g

-83 dBm typical

-2 dBm to +12 dBm (configurable via software)

Table 5. Transmit Power

802.11 b (2 Mbps)

Current in mA Note (1)

802.11 g (24 Mbps)

Current in mA Note (1)

Output Power

0

2

120

130

170

175

180

185

190

135

150

190

200

210

225

240

4

6

8

10

12

Note:

1. Measured at 3.3-V DC VCC. The power consumption is the average power, active during actual power consumption.

www.rovingnetworks.com

Version 3.21 10/2/2012

3

RN-171

ꢀ

TYPICAL APPLICATION SCHEMATIC

Figure 2 shows a typical application schematic with a battery boost circuit; Figure 3 shows a typical schematic with a linear

regulator.

Figure 2. Application Schematic with Battery Boost Circuit

ꢀ

www.rovingnetworks.com

Version 3.21 10/2/2012

4

RN-171

ꢀ

Figure 3. Typical Application Circuit with Linear Regulator

ꢀ

Figure 4 shows the pin pads and Table 6 describes the pins.

Figure 4. Pin Pads

19 17 15

13 11

9

7

5

3

1

20

18

16 14 12 10

8

6

4

2

48

49

21

22

23

24

25

26

27

Top View

29 31 33

35 37 39

41 43 45

47

28

30

32 34 36

38 40 42 44

46

ꢀ

www.rovingnetworks.com

Version 3.21 10/2/2012

5

RN-171

ꢀ

Table 6. Pin Description

Pad

Number

Optional

Function

Direction

Note (1)

Signal Name

Description

1

2

3

4

GND

Ground.

-

Unused

GPIO9

Do not connect.

No Connect

I/O

Enable ad hoc mode, restore factory defaults, 8 mA drive,

3.3-V tolerant.

5

GPIO8

GPIO, 24-mA drive, 3.3-V tolerant.

I/O

The RN-171 drives GPIO8 HIGH on powerup, which

overrides software configured powerup values, such as

set sys value 0x0000 on GPIO8.

6

7

GPIO7

GPIO6

GPIO, 24-mA drive, 3.3-V tolerant.

I/O

GPIO, 24-mA drive, 3.3-V tolerant, connection status on

Roving Networks’ firmware.

Status of access

point association

8

9

GPIO5

GPIO4

GPIO, 24-mA drive, 3.3-V tolerant.

Data Tx/Rx status

I/O

Connected over

TCP status

10

11

12

13

14

15

16

17

18

19

VDD_3.3V

GPIO3

GPIO2

GPIO1

GND

3.3-V power supply.

GPIO, 8-mA drive, 3.3-V tolerant.

Ground.

I/O

-

Unused

Do not connect.

No Connect

Do not connect.

20

GND

Ground.

-

21, 22,

23

24

ANTENNA

GND

802.11b/g 2.4-Ghz antenna.

Ground.

-

25, 26,

27

28

29

30

31

32

33

34

35

36

37

38

39

40

GND

Ground.

-

SENSOR 0 (2), (3)

SENSOR 1 (2), (3)

SENSOR 2 (2), (3)

SENSOR 3 (2), (3)

SENSOR POWER

VDD_3.3V_RF

SENSOR 4 (3)

SENSOR 5 (3)

SENSOR 6 (3)

SENSOR 7 (3)

GND

Sensor interface, analog input to module, 1.2-V tolerant.

Output voltage from module, 3.3 V max.

Input

-

3.3-V RF power supply (connect to 3.3-V rail).

Sensor interface, analog input to module, 1.2-V tolerant.

Ground.

-

Input

-

RESET

Optional module reset signal (active low), 100-k pull up,

Input

apply pulse of at least 160 us, 3.3-V tolerant.

41

42

FORCE_AWAKE

GPIO 14

Optional module awake signal (active high), 100-k pull

down, apply pulse of at least 260 us, 3.3-V tolerant.

Input

I/O

GPIO, 8 mA drive, 3.3-V tolerant.

www.rovingnetworks.com

Version 3.21 10/2/2012

6

RN-171

ꢀ

Pad

Number

Optional

Function

Direction

Note (1)

Signal Name

Description

43

44

45

46

47

48

49

UART_RTS

UART_CTS

UART_RX

UART_TX

UART RTS flow control, 8-mA drive, 3.3-V tolerant.

UART CTS flow control, 3.3-V tolerant.

UART RX, 3.3-V tolerant.

Output

Input

Output

-

UART TX, 8-mA drive, 3.3-V tolerant.

Ground.

GND

SREG_3V3_CTRL

VDD-BATT

Boost regulator control.

Output

-

Battery input, 2.0 - 3.3 V with boost regulator in use,

connect to VDD if not using boost regulator.

Notes:

1. Signals marked as input are inputs to the RN-171 module. Signals marked as output are outputs from the module.

2. Any of the sensors 0 - 3 can be used to wake the module. The sensor pins are 1.2-V tolerant. DO NOT apply 3.3-V on these pins. DO

NOT apply 3.3-V on any of sensor pins.

3. When sensor pins are used as sensor inputs, they saturate at 400 mV. Sensor pins will accept input voltages up to 1.2 V but will

saturate at 400 mV. DO NOT apply 3.3 V on any of sensor pins.

Figure 5 shows the module’s physical dimensions.

Figure 5. Module Physical Dimensions

1 mil = 0.0254 millimeters

35 mil

50 mil

35 mil

135 mil

185 mil

150 mil

700 mil

185 mil

Pad Dimensions: 40 x 90 mil (rounded ends)

1,050 mil

ꢀ

www.rovingnetworks.com

Version 3.21 10/2/2012

7

RN-171

ꢀ

DESIGN CONCERNSꢀ

The following sections provide information on designing with the RN-171 module, including antenna design, solder reflow,

boost regulator, etc.

Antenna Design

The RN-171 supports several antenna designs, including a PCB trace antenna, chip antenna, wire antenna, and U.FL

connector.

PCB Trace Antenna

Figure 6 shows Roving Networks’ recommended PCB trace antenna pattern. The antenna ground should be connected to

the ground plane and/or ground polygon on both the top and bottom layers with at least 2 vias. The ground plane should

come close to the antenna, exactly as shown in Figure 6; the distance is critical. There should be no ground place/trace

under the antenna under any circumstances.

The antenna feed goes through the polygon on a 50-ohm impedance trace to the source of the signal. Unless the antenna

trace is exactly 50 ohms and the source has a 50-ohm output impedance, you should use a matching PI filter (2

capacitors and an inductor).

The left side of the antenna should be placed on the PCB edge. If that is not possible, leave at least 1 inch of clearance

from any trace or ground plane. The top and bottom of the antenna (the shorter side) should be placed on the PCB edge

or should have at least 1-inch clearance from any trace or ground plane.

To control the impedance of the antenna feed the board should be 4 layers with a dedicated ground plane and a thickness

of around 8 - 14 mils between the ground plane and the top layer (where the antenna feed is routed).

A 2-layer board would not be thin enough to obtain the desired impedance using an acceptable trace width.

Figure 6. PCB Trace Antenna Pattern

Antenna Feed

Antenna Ground

www.rovingnetworks.com

Version 3.21 10/2/2012

8

RN-171

ꢀ

The trace from the RF pad to the antenna feed should be 12 mils thick on a 4-layer PCB to achieve 50 ohms of impedance

matching as shown in Figure 7.

Figure 7. Trace from RF Pad to Antenna Feed

12-mil Thick Trace from

RF Pad to Antenna Feed

ꢀ

Chip Antenna

If your design uses a chip antenna, Roving Networks recommends the 2450AT42A100 manufactured by Johanson. Refer

to the antenna’s data sheet for additional information such as dimensions, mounting considerations, and radiation

patterns. Figure 8 shows the antenna dimensions.

www.rovingnetworks.com

Version 3.21 10/2/2012

9

RN-171

ꢀ

Figure 8. 450AT42A100 Chip Antenna Dimensions

Inches

mm

L

W

T

a

0.197 0.000ꢀ

0.079 0.000ꢀ

0.043 0.000ꢀ

0.020 0.0012

5.00 0.20

2.00 0.20

1.10 0.20

0.50 0.30

W

T

a

L

Terminal Con!guration

No.

1

Function

Feeding Point

No Connect

2

1

2

ꢀ

Figure 9 shows the chip antenna’s mounting considerations.

Figure 9. Chip Antenna Mounting Considerations

1.0

8.9

3.9

1.8

Line width should be designed

to provide 50-ohm impedence

matching characteristics.

1.0

4.0

Units: mm

Mount these devices with

the brown mark facing up.

ꢀ

Figure 10 shows the recommended chip antenna layout.

Figure 10. Recommended Chip Antenna Layout

ꢀ

www.rovingnetworks.com

Version 3.21 10/2/2012

10

RN-171

ꢀ

The feed connecting the antenna to the RF pad must be 50 ohm in impedance. If this feed is shorter than 0.2" the board

can be 2 layers and the thickness of the feed is the same as described in the manufacturer’s data sheet. If the trace is

longer, you need a 4-layer board with controlled impedance, i.e., a ground plane directly under the top layer. The

thickness should be calculated accordingly.

Wire Antenna

To implement a wire antenna, drill a hole through the board on the RF pad (pin 24) to place the wire antenna. To provide

50 ohms of impedance matching, the RF path from the RF pad (Pin 24) to the location of the wire antenna should be

12 mils thick on a 4-layer PCB. See Figure 11. Roving Networks recommends that you use an 18-gauge wire with a length

of 1 inch 0.25. For best performance, the wire antenna should be perpendicular to the ground plane.

NOTE: There should be no thermal relief connectors on GND for RF path and on the ground plane.

Figure 11. Wire Antenna Location

19 17

20

18

16

21

22

23

24

25

26

27

A1

29 31

30

28

32

ꢀꢀ

ꢀ

U.FL Connector

Figure 12 shows one option for implementing a U.FL connector. The trace from the RF pad to the U.FL connector should

be 12 mils thick to achieve 50 ohms of impedance matching on a 4-layer board. The part number of the U.FL connector

used for certification of the module is U.FL-R-SM from Hirose.

www.rovingnetworks.com

Version 3.21 10/2/2012

11

RN-171

ꢀ

Figure 12. U.FL Connector

19 17

20

18

16

21

22

23

24

25

26

27

29 31

30

28

32

ꢀ

Using Batteries

The RN-171 module does not have a boost regulator circuit. The battery choice is absolutely critical because if the battery

voltage drops below 3 V, the module performance starts to degrade. One possible battery of choice is the 3.6-V ER14505

battery, which has a long battery life. If this battery is used to power the module, Roving Networks recommends that you

use a 1,000 – 3,000 uF bypass capacitor because the ER14505 battery has high output impedance.

Boost Regulator

The RN-171 does not have an on-board boost regulator. Figure 13 shows a recommended circuit for the boost regulator.

Designs that include the boost regulator will provide good power supply to the flash memory even when the battery voltage

drops close to 1.8 V. If a board containing the RN-171 does not include a boost regulator, it SHOULD include a 2.7-V

under-voltage reset circuit to prevent the module from accessing the flash memory when the supply voltage falls below

2.7 V. All supported flash chips are rated for a minimum VDD of 2.7 V.

www.rovingnetworks.com

Version 3.21 10/2/2012

12

RN-171

ꢀ

Figure 13. Boost Regulator Circuit

Table 7 shows the recommended components for the boost regulator circuit.

Table 7. Boost Regulator Circuit Components

Designator

Description

Value

SS12

Manufacturer

Micro Commercial Co

Taiyo Yuden

Manufacturer

Part Number

SS12-TP

Vendor

DigiKey

Vendor Part

Number

SS12-TPCT-ND

D

L

Diode Schottky

1A 20V SMA

Inductor 1.0uH

30% SMD

MOSFET N-CH

20V 5.9 A

1uH

NR3015T1R0N

DMN2050L-7

587-1647-1-ND

Q

DMN2050L

Diodes Inc.

DMN2050LDICT-ND

Roving Networks recommends that you use a low voltage detector circuit, such as the XC61 from Torex, tied to the RN-171

module’s RESET pin to protect from low voltage.

Powering from a 3.3-V Regulated Source

Apply 3.3 V regulated power to pins 10, 34, and 49. Leave pin 48 (SREG_3V3_CTRL) unconnected.

NOTE: Do not connect pin 48 to ground. Leave it unconnected.

Solder Reflow

The reflow temperature must not exceed 220° C. To reflow solder the RN-171 module onto a PCB, Roving Networks

recommends a RoHS compliant solder paste equivalent to the NIHON ALMIT paste or OMNIX OM-310 solder paste from

Alpha metals. The module pads must have a solder past thickness of 5 mil.

NOTE: Use no clean flux. Do NOT water wash!

The temperature profile is based on the IC level and other components level only (without the shield can). From the

perspective of the module only, a profile above 245° C should be acceptable. See Figures 14 and 15.

www.rovingnetworks.com

Version 3.21 10/2/2012

13

RN-171

ꢀ

Figure 14. Solder Reflow Temperature Profile

ꢀ

Figure 15. Solder Reflow Curve

ꢀ

www.rovingnetworks.com

Version 3.21 10/2/2012

14

RN-171

ꢀ

COMPLIANCE INFORMATION

Table 8 describes the module’s compliance information.

Table 8. Compliance Information

Specification

FCC

Compliance

Part 15.247 FCC T9J-RN171

IC

RSS-210 low-power communication device

ID # 0681

CE

REG

RADIO

U9M21103-4249-C

EN 300328 V1.7.1 (10/2006)

EN 301489-1 V1.8.1 (04/2008)ꢀ

EN 301489-17 V2.1.1 (05/2009)

EMC

EN 60950-1:2006+A11:2010ꢀ

EN 50371 2002-03

SAFETY

RoHs

Compliant

ORDERING INFORMATION

Table 9 provides ordering information.

Table 9. Ordering Information

Part Number

Description

Industrial Temperature (- 40 to + 85 C) with RF pad for external antenna.

RN-171

RN-174

Development board for RN-171 module containing an RS-232 and TTL UART hardware interface,

status LEDs, power regulator, and sensor connections.

RN-SMA4-RP

RN-UFL-SMA6

4” external antenna with reverse polarity SMA connector. Used with RN-UFL-SMA6.

6” cable with U.FL connector on one end and SMA on the other.

For other configurations, contact Roving Networks directly.

Go to http://www.rovingnetworks.com for current pricing and a list of distributors carrying Roving Networks products.

ꢀ

www.rovingnetworks.com

Version 3.21 10/2/2012

15

RN-171

ꢀ

registered trademark of Roving Networks. Apple Inc., iPhone, iPad, iTunes, Made

for iPhone are registered trademarks of Apple Computer.

Roving Networks reserves the right to make corrections, modifications, and other

changes to its products, documentation and services at any time. Customers

should obtain the latest relevant information before placing orders and should verify

that such information is current and complete.

Roving Networks assumes no liability for applications assistance or customer’s

product design. Customers are responsible for their products and applications

which use Roving Networks components. To minimize customer product risks,

customers should provide adequate design and operating safeguards.

Roving Networks, Inc.

102 Cooper Court

Los Gatos, CA 95032

+1 (408) 395-5300

www.rovingnetworks.com

Roving Networks products are not authorized for use in safety-critical applications

(such as life support) where a failure of the Roving Networks product would

reasonably be expected to cause severe personal injury or death, unless officers of

the parties have executed an agreement specifically governing such use.

www.rovingnetworks.com

Version 3.21 10/2/2012

16


型号：	SS12-TPCT-ND
厂家：	MICROCHIP
描述：	RN-171 802.11 b/g Wireless LAN Module RN- 171支持802.11 b / g无线局域网模块无线无线局域网
文件：	总16页 (文件大小：2102K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SS12-TPCT-ND [MICROCHIP]

相关型号：

SS12-TS01

SS12/11T

SS12/D

SS120

SS120

SS120

SS120

SS1200

SS1200

SS1200-L

SS1200-L-TP

SS1200-L-TP-HF