Amp ed RF Technology WF43 datasheet

WF43 Datasheet

Amp’ed RF Technology, Inc.

WF43 Product Specification

14.6mm x 13.5mm x 2.8 mm

Description

Amp’ed RF Tech presents the WF43 Wi-Fi

Stand-alone module: 802.11bgn + Host MCU

with Wi-Fi protocol stack. The WF43 is a small

footprint low cost RF module including chip

antenna, 7 general purpose and ADC/DAC IO

lines, several serial interface options, and up to

12M bps data throughput using the SPI interface.

The complete stack, TCP/IP with WLAN, is

hosted on the integrated MCU. A simple AT

command interface, artSerial, allows users to

easily configure and operate the WF43.

WLAN features

 802.11b/g/n, 802.11d Regulatory Domain,

802.11r

 Power savings mode

 Transmit power back-off

 Wi-Fi Direct (concurrent)

 Wi-Fi Display

 Wi-Fi Protected Setup

 Soft Access Point

 Hotspot 2.0

 Security: WPAI/WPA2, AES, WEP

Hardware configuration

 Cortex-M4 microprocessor up to 82MHz

 256K bytes Flash memory

 64K bytes RAM memory

 UART, up to 2.25M baud

 SPI and I2C interfaces

 7 general purpose I/O

 5x12-bit A/D inputs

 1 DAC output

 1 LPO input

 Standby current, 40 µA

 RoHS conformance

 FCC/IC certified (pending)

Embedded software

 Amp’edUP WiFi stack

 artSerial, AT command set, SDK, Software

Development Kit (Optional)

 Mobile application software (Optional)

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

3

Table of Contents

WF43 Product Specification ............................................................................................................................................... 2

1 Software Architecture ................................................................................................................................................. 4

1.1 Protocol stack diagram............................................................................................................................................... 4

1.2 Wi-Fi features ............................................................................................................................................................. 4

2 Hardware Specifications ............................................................................................................................................ 5

2.1 Recommended Operating Conditions ........................................................................................................................ 5

2.2 Absolute Maximum Ratings ....................................................................................................................................... 5

2.3 I/O Operating Conditions............................................................................................................................................ 5

2.4 Current Consumption ................................................................................................................................................. 6

2.5 Selected RF Characteristics ...................................................................................................................................... 7

2.6 Transmit Power Back-off ............................................................................................................................................ 7

2.7 Pin Assignment .......................................................................................................................................................... 9

2.8 Pin Placement Diagram (Top View) ......................................................................................................................... 10

2.9 Layout Drawing ........................................................................................................................................................ 11

3 Hardware Design ..................................................................................................................................................... 12

3.1 Block Diagram .......................................................................................................................................................... 12

3.2 Layout....................................................................................................................................................................... 12

3.3 Module Reflow ......................................................................................................................................................... 12

3.4 GPIO Interface ......................................................................................................................................................... 12

3.5 UART Interface ........................................................................................................................................................ 13

3.6 PCB Layout Guidelines ............................................................................................................................................ 14

3.7 Reset Circuit ............................................................................................................................................................. 14

3.7.1 External Reset Circuit ............................................................................................................................................ 14

3.7.2 Internal Reset Circuit ............................................................................................................................................. 15

4 Regulatory Compliance ............................................................................................................................................ 16

4.1 Modular Approval, FCC and IC ................................................................................................................................ 17

4.2 FCC Label Instructions............................................................................................................................................. 17

4.3 CE Label Instructions ............................................................................................................................................... 17

5 Ordering Information ................................................................................................................................................ 18

6 Revision History ...................................................................................................................................................... 18

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

4

1 Software Architecture

TCP/UDP

artSerial Command Set

Amp

’

ed UP Stack, Wi

-

Fi

IP

802.11

802.11 MAC

802.11PHY

API or Custom

Application

DNS/DHC

1.1 Protocol stack diagram

Wi-Fi

Manage

1.2 Wi-Fi features

 802.11b/g/n, 802.11d Regulatory Domain, 802.11r

 Output Power, +23dBm

 Interface, SDIO 2.0, SPI

 Wi-Fi Direct (concurrent)

 Wi-Fi Display

 Wi-Fi Protected Setup

 Soft Access Point

 Hotspot 2.0

 Security: WPAI/WPA2, AES, WEP, TKIP

Radio Chipset

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

5

2 Hardware Specifications

Rating

Min Typical

Max Unit

Rating

Min Typical

Max Unit

General Conditions (VIN= 3.6V and 25°C)

2.1 Recommended Operating Conditions

Operating Temperature Range -40 - 85 °C

Supply Voltage VIN 2.3 3.6 4.8 Volts

Signal Pin Voltage - 2.0 - Volts

RF Frequency 2400 - 2483.5 MHz

2.2 Absolute Maximum Ratings

Storage temperature range -55 - +150 °C

Supply voltage VIN -0.3 - +5.0 Volts

I/O pin voltage VIO -0.3 - +2.5 Volts

RF input power - - -5 dBm

2.3 I/O Operating Conditions

Symbol Parameter Min Max Unit

VIL Low-Level Input Voltage - 0.6 Volts

VIH High-Level Input Voltage 1.3 - Volts

VOL Low-Level Output Voltage - 0.4 Volts

VOH High-Level Output Voltage 2.0 - Volts

IOL Low –Level Output Current - 4.0 mA

IOH High-Level Output Current - 4.0 mA

RPU Pull-up Resistor 80 120 KΩ

RPD Pull-down Resistor 80 120 KΩ

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

6

2.4 Current Consumption

Modes (WLAN ReducedPower Consumption)

Modes (WLANMax Power Consumption)

V

Complete Power Down 17 µA

Sleep 101 µA

Power save (beacon period (including DTIM) 100ms, beacon length
1ms)

-proprietary power saving features enabled

RX (idle, 2.4GHz) 62.07 mA

RX (active, 2.4GHz, OFDM) 65.87 mA

TX (active, 2.4GHz, OFDM), 15.5dBm @RF port 257.67 mA

TX (active, 2.4GHz, OFDM), 20.5dBm @RF port 279.67 mA

A VoIP call using a standard codec G.711 (64Kb/s, 320 byte packets)
and U-APSD (WMM power save) power-saving mode.

Video streaming; the device is receiving 2.0 Mbps of data using legacy

PSM mode (for example, MPEG-4@2Mbps)

I

VBAT=2.7v

Complete Power Down TBD µA

Sleep TBD µA

Power save (beacon period (including DTIM) 100ms, beacon length
1ms)

-proprietary power saving features enabled

RX (idle, 2.4GHz) TBD mA

RX (active, 2.4GHz, OFDM) TBD mA

TX (active, 2.4GHz, OFDM), 15.5dBm @RF port TBD mA

TX (active, 2.4GHz, OFDM), 20.5dBm @RF port TBD mA

A VoIP call using a standard codec G.711 (64Kb/s, 320 byte packets)
and U-APSD (WMM power save) power-saving mode.

Video streaming; the device is receiving 2.0 Mbps of data using legacy

PSM mode (for example, MPEG-4@2Mbps)

Ipeak: system maximum peak current draw TBD mA

Modes (WLAN Min Power Consumption)

VBAT=2.3v

Complete Power Down TBD µA

Sleep TBD µA

Power save (beacon period (including DTIM) 100ms, beacon length
1ms)

-proprietary power saving features enabled

RX (idle, 2.4GHz) TBD mA

RX (active, 2.4GHz, OFDM) TBD mA

TX (active, 2.4GHz, OFDM), 15.5dBm @RF port TBD mA

TX (active, 2.4GHz, OFDM), 20.5dBm @RF port TBD mA

A VoIP call using a standard codec G.711 (64Kb/s, 320 byte packets)
and U-APSD (WMM power save) power-saving mode.

Video streaming; the device is receiving 2.0 Mbps of data using legacy
PSM mode (for example, MPEG-4@2Mbps)

Ipeak: system maximum peak current draw TBD mA

=3.6v

BAT

: system maximum peak current draw 378 mA

peak

Avg Unit

0.77 mA

4.65 mA

13.31 mA

Avg Unit

TBD mA

TBD mA

TBD mA

Avg Unit

TBD mA

TBD mA

TBD mA

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

7

2.5 Selected RF Characteristics

Parameters Conditions Typical Unit

Antenna load 50 ohm

Wi-Fi Receiver

Sensitivity DSSS 1Mbps@FER<8% -98.5 dBm

Sensitivity DSSS 2Mbps@FER<8% -96 dBm

Sensitivity CCK 5.5Mbps@FER<8% -94 dBm

Sensitivity CCK 11Mbps@FER<8% -89 dBm

Sensitivity BPSK 6Mbps@PER<10% -94.5 dBm

Sensitivity BPSK 9Mbps@PER<10% -92.5 dBm

Sensitivity QPSK 12Mbps@PER<10% -91.5 dBm

Sensitivity QPSK 18Mbps@PER<10% -89 dBm

Sensitivity 16QAM 24Mbps@PER<10% -86 dBm

Sensitivity 16QAM 36Mbps@PER<10% -83 dBm

Sensitivity 64QAM 48Mbps@PER<10% -78.5 dBm

Sensitivity 64QAM 54Mbps@PER<10% -77 dBm

Sensitivity BPSK 6.5Mbps@PER<10% -92.5 dBm

Sensitivity QPSK 13Mbps@PER<10% -89.5 dBm

Sensitivity QPSK 19.5Mbps@PER<10% -87 dBm

Sensitivity 16QAM 26Mbps@PER<10% -84.5 dBm

Sensitivity 16 QAM 39Mbps@PER<10% -81 dBm

Sensitivity 64QAM 52Mbps@PER<10% -77 dBm

Sensitivity 64QAM 58.5Mbps@PER<10% -75.5 dBm

Sensitivity 64QAM 65Mbps@PER<10% -73.5 dBm

Mode Channel Gain(dBi) Max EIRP Power(dBm)

1 0.5 9.51

802.11b

802.11g

802.11n-HT20

7 0.5 9.44

13 0.5 9.27

1 0.5 5.71

7 0.5 5.79

13 0.5 5.55

1 0.5 5.45

7 0.5 5.52

13 0.5 5.38

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

8

Test Mode Bandwidth(MHz) Channel No. Frequency(MHz) Data Rate(Mbps) Peak Power(dBm)

1 12.31

802.11b 20 6 2437

802.11g 20 6 2437

802.11n 20 6 2437

5.5 11.62

11 11.38

6 19.52

24 18.95

54 17.77

6.5/7.2(MCS0) 19.1

39/43.3(MCS4) 18.98

65/72.2(MCS7) 17.86

2.6 Transmit Power Back-off

When 2.7 V < VBAT < 3.6 V, the output power shall be backed off by 0.8 dB per300 mV drop of Vbat

below 3.6 V to guarantee meeting spectral mask, EVM, harmoniclevels, spurious emissions and

regulatory requirements in general.

When 2.3 V < VBAT < 2.7 V, an additional back-off of the output power is needed to guarantee

meeting spectral mask, EVM, harmonic levels, spurious emissions and regulatory requirements in

general.

When the load is not 50Ω, the output power is backed off to guarantee meeting spectral mask, EVM,

harmonic levels, spurious emissions and regulatory requirements in general. The device is able to

withstand a VSWR of up to 12:1 without any damage.

When the temperature increases from +25°C to +85°C, the output power shall be backed off by 0.25

dB per 10°C increase to guarantee meeting spectral mask, EVM, harmonic levels, spurious

emissions and regulatory requirements in general.

Tx Power vs Vin

Tx Power dBm

25.0

23.0

21.0

19.0

Tx Power dBm

17.0

15.0

2.4 2.9 3.4

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

9

2.7 Pin Assignment

Name Type Pin # Description ALT Function 5V Tolerant Initial State

UART Interface

RXD I 13 Receive data Y

TXD O 14 Transmit data Y

RTS O 12 Request to send (active low) I2C Data/Aux Uart Rx Y

CTS I 11 Clear to send (active low) I2C Clock/Aux Uart Tx Y

Reserved

BOOT 0 I 9 Boot 0

Power and Ground

Vin 8 Vin

GND 7 GND

Reset

RESETN I 10 Reset input (active low for 5 ms) 2.5V max

LPO

LPO I 15 LPO input

GPIO – General Purpose Input/Output

GPIO [1] I/O 1 General Purpose Input/Output SPI MISO/I2SextSD Y Input pull down

GPIO [2] I/O 2 General Purpose Input/Output SPI MOSI/I2S SD Y Floating

GPIO [3] I/O 3 General Purpose Input/Output SPI SCLK/ I2S CK Y Input pull down

GPIO [4] I/O 4 General Purpose Input/Output SPI SS/I2S WS Y Input pull down

GPIO [5] I/O 5 General Purpose Input/Output ADC 0 Y Input pull down

GPIO [6] I/O 6 General Purpose Input/Output ADC 1 Y Input pull down

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

10

2.8 Pin Placement Diagram (Top View)

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

11

2.9 Layout Drawing

Size: 14.6 mm x 13.5 mm x 2.8 mm

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

3 Hardware Design

3.1 Block Diagram

3.2 Layout



All unused pins should be left floating; do not ground.



All GND pins must be well grounded.



The area around the antenna should be free of any ground planes, power planes, trace

routings, or metal for at least 6.5 mm in all directions.



Traces should not be routed underneath the module.

3.3 Module Reflow

The WF43 is a surface mount module supplied on a 15 pin, 6-layer PCB. The final assembly

recommended reflow profiles are:

For RoHS/Pb-free applications, Sn96.5/Ag3.0/Cu0.5 solder is recommended.



Maximum peak temperature of 230° - 240°C (below 250°C).



Maximum rise and fall slope after liquidous of < 2°C/second.



Maximum rise and fall slope after liquidous of < 3°C/second.



Maximum time at liquidous of 40 – 80 seconds.

3.4 GPIO Interface

All GPIOs are capable of sinking and sourcing 4mA of I/O current.

Phone: [phone] | Fax: [phone] | E-mail: [e-mail]
Address : 1879 Lundy Ave, ste. 138, San Jose, CA 95131

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

12

13

3.5 UART Interface

The UART is compatible with the 16550 industry standard. Four signals are provided with the UART

interface. The TXD and RXD pins are used for data while the CTS and RTS pins are used for flow

control.

Connection to Host Device

Typical RS232 Circuit

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：

[phone] |

地址：天津市华苑产业区海泰西路18号西

传真：

[phone]转111 | E-mail: [e-mail]

3B-202（300384）

3.6 PCB Layout Guidelines

3.7 Reset Circuit

Two types of system reset circuits are detailed below.

3.7.1 External Reset Circuit

Note: R

ranges from 30K ohm to 50K ohm internally.

PU

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

14

3.7.2 Internal Reset Circuit

Notes:

- R

- R

ranges from 30K ohm to 50K ohm internally.

PU

should be from 1K ohm to 10K ohm

RST

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

15

16

4 Regulatory Compliance

Federal Communications Commission statement:

This module has been tested and found to comply with the FCC Part15.

These limits are designed to provide reasonable protection against harmful interference in

approved installations. This equipment generates, uses, and can radiate radio frequency energy

and, if not installed and used in accordance the instructions, may cause harmful interference to

radio communications. However, there is no guarantee that interference will not occur in a

particular installation.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two

conditions: (1) This device may not cause harmful interference, and (2) this device must accept

any interference received, including interference that may cause undesired operation.

Modifications or changes to this equipment not expressly approved by Amp’ed RF Technology

may void the user’s authority to operate this equipment.

The modular transmitter must be equipped with either a permanently affixed label or must be

capable of electronically displaying its FCC identification number

(A) If using a permanently affixed label, the modular transmitter must be labeled with its own FCC

identification number, and, if the FCC identification number is not visible when the module is

installed inside another device, then the outside of the device into which the module is installed

must also display a label referring to the enclosed module. This exterior label can use wording

such as the following: “Contains Transmitter Module FCC ID: X3ZWFMOD9” or “Contains FCC ID:

X3ZWFMOD9.”

(B) If the modular transmitter uses an electronic display of the FCC identification number, the

information must be readily accessible and visible on the modular transmitter or on the device in

which it is installed. If the module is installed inside another device, then the outside of the device

into which the module is installed must display a label referring to the enclosed module. This

exterior label can use wording such as the following: “Contains FCC certified transmitter

module(s).”

To satisfy FCC RF Exposure requirements for mobile and base station transmission devices, a

separation distance of 20 cm or more should be maintained between the antenna of this device

and persons during operation. To ensure compliance, operation at closer than this distance is not

recommended. The antenna(s) used for this transmitter must not be co-located or operating in

conjunction with any other antenna or transmitter.

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

17

Industry Canada statement:

Label of the end product:

The final end product must be labeled in a visible area with the following "Contains transmitter

module IC: 8828A-MOD9"

This Class B digital apparatus complies with Canadian ICES-003.

Cetappareilnumérique de la classe B estconforme à la norme NMB-003 du Canada.

This device complies with RSS-210 of the Industry Canada Rules. Operation is subject to the

following two conditions: (1) This device may not cause harmful interference, and (2) this device

must accept any interference received, including interference that may cause undesired operation.

Ce dispositif est conforme à la norme CNR-210 d'Industrie Canada applicable aux appareils radio

exempts de licence. Son fonctionnement est sujet aux deux conditions suivantes: (1) le dispositif

ne doit pas produire de brouillage préjudiciable, et (2) ce dispositif doit accepter tout brouillage

reçu, y compris un brouillage susceptible de provoquer un fonctionnement indésirable.

4.1 Modular Approval, FCC and IC

FCC ID: X3ZWFMOD9

IC: 8828A-MOD9

In accordance with FCC Part 15, the WF43 is listed above as a Limited Modular Transmitter

device.

4.2 FCC Label Instructions

The outside of final products that contain a WF43 device must display a label referring to the

enclosed module. This exterior label can use wording such as the following:

Contains Transmitter Module

FCC ID: X3ZWFMOD9

IC: 8828A-MOD9

Any similar wording that expresses the same meaning may be used.

4.3 CE Label Instructions

CE Certification

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）

18

5 Ordering Information

Part Name Description

WF43 Standard version

6 Revision History

Data Revision Description

17-February-2014 1.2 Added WF43LT option

20-June-2014 1.3 Updated the picture of WF43

16-Sep-2014 1.4 Updated the ordering information

24-Mar-2015 1.5 Updated the description, pin assignment and block

14-July-2015 1.6 Updated the ordering information.

diagram.

Phone: [phone] | E-mail: [e-mail]
Address : 2674 N. First Street, ste 220, San Jose, CA 95134

电话：[phone] | 传真：[phone] 转 111 | E-mail: [e-mail]
地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）