WF111 – 802.11 B/G/N MODULE DATA SHEET Tuesday, 29 September 2015 Version 1.2.
Copyright © 2000-2015 Bluegiga Technologies All rights reserved. Bluegiga Technologies assumes no responsibility for any errors which may appear in this manual. Furthermore, Bluegiga Technologies reserves the right to alter the hardware, software, and/or specifications detailed here at any time without notice and does not make any commitment to update the information contained here. Bluegiga’s products are not authorized for use as critical components in life support devices or systems.
VERSION HISTORY Version Comment 1.0 First public version 1.1 Product codes updated 1.1.1 Added sleep clock specifications 1.1.2 Added frequency variation table 1.1.3 FCC and IC information added 1.1.4 WT111-N layout guide 1.1.5 Some new consumption measurements 1.1.6 Added CE information, corrected supported channels for default FCC version 1.1.7 Different coexistence pad bindings, replaced MIB keys with MIB file names 1.1.8 Listed supported coexistence schemes 1.1.
TABLE OF CONTENTS 1 Product description ........................................................................................................................................6 2 Ordering Information......................................................................................................................................7 3 Pinout and terminal descriptions ...................................................................................................................8 4 Interfaces ....
15 Certifications .......................................................................................................................................... 35 15.1 CE ...................................................................................................................................................... 35 15.2 FCC and IC ........................................................................................................................................ 35 15.2.1 FCC et IC ..........
1 KEY FEATURES: Product description DESCRIPTION o Single stream 2.4 GHz band WF111 is a fully integrated single 2.4GHz band 802.11 b/g/n module, intended for portable and battery powered applications, where Wi-Fi connectivity is needed. WF111 integrates an IEEE 802.11 b/g/n radio, antenna or U.FL antenna connector and SDIO or CSPI host interfaces.
2 Ordering Information WF111 Product Numbering WF1 1 1- X Antenna: A = Internal antenna E = External N = RF pin Confirmed products and codes Product code Description WF111-A-v1 WF111 module with internal chip antenna WF111-E-v1 WF111 module with U.FL connector for external antenna WF111-N-v1 WF111 module with 50 RF pin (contact sales@bluegiga.
3 Pinout and terminal descriptions Figure 2: WF111 pinout Bluegiga Technologies Oy Page 8 of 41
POWER SUPPLIES PIN NUMBER DESCRIPTION VDD_REGIN 17 Input for the internal regulators REGEN 23 Pull high to enable internal voltage regulators (2.
SDIO/CSPI Interfaces PIN NUMBER PAD TYPE SDIO_DATA[0] SDIO_SPI_DI Synchronous data input/output 2 SDIO SPI data output Bi-directional, tristate, weak internal pull-up CSPI_MISO SDIO_DATA[1] SDIO_SPI_INT 4 5 CSPI_CS# Synchronous data input/output Bi-directional, weak/strong internal pull-up SDIO_CLK SDIO_SPI_SCLK 6 SDIO SPI chip select, active low CSPI chip select, active low SDIO SPI clock CSPI clock SDIO_CMD CSPI_MOSI Synchronous data input/output SDIO clock Input, weak internal pull-up CS
OTHER SIGNALS PIN NUMBER PAD TYPE DESCRIPTION RST 25 Input, weak internal pullup, active low System reset ANT 31 RF, DC blocked Antenna output on N variant, on A and E variants not connected BT 9 RF, DC blocked Bluetooth antenna sharing RF input Table 4: Other Terminal Descriptions DEBUG SPI INTERFACE PIN NUMBER PAD TYPE DESCRIPTION SPI_MISO 11 Output, tri-state, weak internal pull-down Synchronous data output SPI_CLK 12 SPI_MOSI 13 SPI_CS 26 Synchronous clock input Input, wea
4 Interfaces 4.1 Host interfaces WF111 can be interfaced by the host using SDIO in 1bit or 4bit mode, SDIO SPI or CSR proprietary CSPI connection. The host connection buses can be clocked up to 50MHz. Due to the relatively high clock rate, the bus layout should be done carefully.
SD Specification Part E1 SDIO Specification v.1.10 4.1.3 CSR Serial Peripheral Interface (CSPI) The CSPI is a host interface which shares pins with the SDIO. It contains a number of modifications on the SDIO SPI specification aimed at increasing the host bus efficiency in hosts supporting SPI but not SDIO.
Figure 4: CSPI Register Read Cycle 4.1.3.4 CSPI register burst write cycle Burst transfers are used to access the MMU buffers. They cannot be used to access registers. Burst read/write cycles are selected by setting the nRegister/Burst bit in the command field to 1. Burst transfers are byte orientated, have a minimum length of 0 bytes and a maximum length of 64kbytes. Setting the length field to 0 results in no data being transferred to or from the MMU.
Function 1 will likely result in bus timeouts. Function 0 is also available when the Wi-Fi core is physically powered off, as long as the VDD_SDIO supply is present. Control of when the module is allowed to enter deep sleep is done via Vendor Unique Register in CCCR in function 0. Wake-up is also initiated through this register. The module will initiate an SDIO interrupt when the wake-up is complete.
4.2 Other interfaces 4.2.1 Debug SPI interface A separate SPI bus is provided at the module pads for device access during testing and uploading settings during application development and manufacturing. This interface cannot be used as a host interface. It is recommended to bring these to a connector or test pads in case RF certification measurements that cannot be made through the host connection are required with the finished design.
Using the Unity-3e+ scheme and the pictured PIO pad bindings, the MIB file mib111_drv_coex.dat should be used. If needed, the PIO pads PIO[3], PIO[5], PIO[4] and PIO[2] can also be used for BT_STATUS, BT_ACTIVE, WLAN_DENY and BT_PERIODIC, respectively, in which case the MIB file mib111_drv_coex_alt.dat should be chosen. On the DKWF111 evaluation board, the PIO[5] pad is connected to an activity led, which is supported by the MIB files mib111_drv_led.dat and mib111_drv_coex_led.
5 Power Control and Regulation 5.1 Power Control and Regulation Figure 8: System block diagram WF111 contains four linear regulators supplying clean voltages for the different parts of the system. All of them produce a 1.2V output voltage, and are fed from a common input, VDD_REGIN. This input can be supplied with a voltage between 1.45-2.0V, typically 1.5V or 1.8V. The VDD_REGIN supply should be relatively clean of ripple and switching spikes in order to avoid degrading the RF performance.
In a 3.3V logic level host system all other supplies would usually be tied to the 3.3V supply, with a separate regulator providing the 1.45-2.0V supply for the Wi-Fi core. A switch mode regulator with 1.5V output is recommended for minimum power consumption. Please see the example schematic in this datasheet. In a 1.8V logic level host system, all other supplies can be connected to the 1.8V supply rail except VDD_PA which should be connected to a 2.7-4.8V supply.
6 Example Application Schematic Figure 9: An example application circuit with SDIO host connection, 3.3V level host logic and 1.5/1.
Figure 10: An example application circuit with SDIO host connection, 1.
7 7.1 Wi-Fi radio Wi-Fi receiver The receiver features direct conversion architecture. Sufficient out-of-band blocking specification at the Low Noise Amplifier (LNA) input allows the receiver to be used in close proximity to Global System for Mobile Communications (GSM) and Wideband Code Division Multiple Access (W-CDMA) cellular phone transmitters without being desensitized. High-order baseband filters ensure good performance against in-band interference. 7.
8 Electrical characteristics 8.1 Absolute maximum ratings Rating Min Max Unit Storage temperature -40 85 °C VDD_PADS, VDD_ANA, VDD_SDIO -0.4 3.6 V VDD_REGIN, REGEN -0.4 2.5 V VDD_PA -0.4 6 V VSS+0.3 VDD+0.3 V Other terminal voltages Table 7: Absolute Maximum Ratings 8.2 Recommended Operating Conditions Rating Min Max Unit Operating temperature range (a) -40 85 °C VDD_PADS, VDD_SDIO, VDD_ANA 1.7 3.6 V VDD_PA 2.7 4.8 V VDD_REGIN 1.
8.3 Input/Output terminal characteristics Digital Terminals Min Typ Max Unit VIL input logic level low 1.7V ≤ VDD ≤ 3.6V -0.3 - 0.25*Vdd V VIH input logic level low 1.7V ≤ VDD ≤ 3.6V 0.625*Vdd - VDD+0.3 V VOL output logic level low 1.7V ≤ VDD ≤ 3.6V, (Io = 4.0 mA) - - 0.4 V VOH output logic level low 1.7V ≤ VDD ≤ 3.6V, (Io = -4.0 mA) 0.75*Vdd - Vdd V Strong pull-up -150 -40 -10 µA Strong pull-down 10 40 150 µA Weak pull-up -5 -1 -0.33 µA Weak pull-down 0.
9 RF Characteristics Min max Channel 1 11 (13) Support for modules with 13 channels enabled can be by specific order by contacting Bluegiga Sales. MOQ will apply. With 13 channels enabled, the FCC certification will not apply. Frequency 2412 2462 (2472) MHz Table 10: Supported frequencies Standard Supported bit rates 802.11b 1, 2, 5.5, 11 Mbps 802.11g 6, 9, 12, 18, 24, 36, 48, 54 Mbps 802.11n, HT, 20MHz, 800ns 6.5, 13, 19.5, 26, 39, 52, 58.5, 65 Mbps 802.11n, HT, 20MHz, 400ns 7.2, 14.
Modulation type Min Typ Max 802.11b +15 +16 +17 dBm 802.11g +14 +15 +16 dBm 802.11n +14 +15 +16 dBm Table 13: Transmitter output power at maximum setting Operating mode Min Typ Max Switch loss (TX and RX) -2.5 -3 -3.5 dB Table 14: BT antenna sharing interface properties Typ Max 802.
10 Power Consumption Operating mode VDD_PA/peak VDD_PA/typ VDD_REGIN/peak VDD_REGIN/typ Transmit (802.11b, 1M, +16dBm) 248 mA 190 mA 240 mA 100 mA Transmit (802.11b, 1M, +8dBm) 144 mA 90 mA Transmit (802.11g, 54M, +15dBm) 154 mA 104 mA Receive, no data 12 mA Deep sleep 10.5 mA 240 mA 9 µA 114 mA 75 µA Table 16: Current consumption during specific operating modes Operating mode Bit rate Throughput (sw. limited) Current/3.3V Transmit/802.
11 Physical Dimensions Figure 11: Physical dimensions Figure 12: WF111 recommended PCB land pattern Bluegiga Technologies Oy Page 28 of 41
12 12.1 Layout Guidelines WF111-A Figure 13: Recommended layouts, on board corner and on board edge See figure 13: recommended layout for the suggested module layout. The impedance matching of the antenna is designed for a layout similar to the module evaluation board. For an optimal performance of the antenna the layout should strictly follow the layout example shown in figure 8 and the thickness of FR4 should be between 1 and 2 mm, preferably 1.6mm.
Figure 14: Typical 50 trace for WF111-N A transmission line impedance calculator, such as TX-Line made by AWR, can be used to approximate the dimensions for the 50 ohm transmission line. Figure 15 shows an example for two different 50 ohm transmission lines. CPW Ground W = 0.15 mm G = 0.25 mm RF GROUND Prepreg, εr = 3.7 RF GROUND h = 0.076 mm RF GROUND FR4, εr = 4.6 GND stitching vias MICROSTRIP W = 1.8 mm FR4, εr = 4.
12.4 Thermal considerations The WF111 module may at continuous full power transmit consume up to 1 W of DC power, most of which is drawn by the power amplifier. Most of this will be dissipated as heat. In any application where high ambient temperatures and constant transmissions for more than a few seconds can occur, it is important that a sufficient cooling surface is provided to dissipate the heat.
Overlapping GND layers without GND stitching vias Overlapping GND layers with GND stitching vias shielding the RF energy Figure 16: Use of stitching vias to avoid emissions from the edges of the PCB Bluegiga Technologies Oy Page 32 of 41
13 Soldering Recommendations WF111 is compatible with industrial standard reflow profile for Pb-free solders. The reflow profile used is dependent on the thermal mass of the entire populated PCB, heat transfer efficiency of the oven and particular type of solder paste used. Consult the datasheet of particular solder paste for profile configurations.
14 Product packaging Bluegiga Technologies Oy Page 34 of 41
15 Certifications WF111 is compliant to the following specifications: 15.1 CE WF111 is in conformity with the essential requirements and other relevant requirements of the R&TTE Directive (1999/5/EC). The product is conformity with the following standards and/or normative documents. EMC (immunity only) EN 301 489-17 V.1.3.2 in accordance with EN 301 489-1 V1.8.1 Radiated emissions EN 300 328 V1.8.1 15.2 FCC and IC This device complies with Part 15 of the FCC Rules.
having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. See table 22 for the approved antennas for WF111-E and WF111-N.
15.2.1 FCC et IC Cet appareil est conforme à l’alinéa 15 des règles de la FCC. Deux conditions sont à respecter lors de son utilisation : (1) cet appareil ne doit pas créer d’interférence susceptible de causer un quelconque dommage et, (2) cet appareil doit accepter toute interférence, quelle qu’elle soit, y compris les interférences susceptibles d’entraîner un fonctionnement non requis.
appartiennent sont strictement interdites d’utilisation avec ce matériel. Veuillez vous référer au tableau 22 concernant les antennes approuvées pour les WF111.
« Inclut la certification IC 5123A-BGTWF111 » L’intégrateur du module WF111 ne doit utiliser que les antennes répertoriées dans le tableau 25 certifiées pour ce module. L’intégrateur est tenu de ne fournir aucune information à l’utilisateur final autorisant ce dernier à installer ou retirer le module RF, ou bien changer les paramètres RF du module, dans le manuel d’utilisation du produit final.
15.3 MIC Japan WF111 has type approval for Japan with certification ID R 209- J00061 15.4 KCC (South-Korea) WF111 has modular certification for Korean market with certification ID KCC-CRM-BGT-WF111 15.5 Qualified Antenna Types for WF111-E This device has been designed to operate with the antennas listed below, and having a maximum gain of 2.14 dBi. Antennas not included in this list or having a gain greater than 2.14 dBi are strictly prohibited for use with this device.
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