Wi2Wi WM825 Users Manual

Wireless Module

WM825B00

Single-Band (2.4 GHz) Wi-Fi IEEE 802.11 b/g/n

module with integrated antenna

Datasheet

Revision 0.9

February 6, 2017

WM825B00

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Disclaimers

Wi2Wi, Inc. PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE MANAGING DIRECTOR OF
Wi2Wi, Inc.

The definitions used herein are:
a) Life support devices or systems are devices which (1) are intended for surgical implant into the body,
or (2) support or sustain life and whose failure to perform when properly used in accordance with the
instructions for use provided in the labeling can reasonably be expected to result in a significant injury
to the user. b) A critical component is any component of a life support device or system whose failure
to perform can be reasonably expected to cause the failure of the life support device or system, or to
affect its safety or effectiveness.

Wi2Wi does not assume responsibility for use of any of the circuitry described, no circuit patent
licenses are implied and Wi2Wi reserves the right at any time to change without notice said circuitry
and specifications.

The content of this document is to be treated as strictly confidential and is not to be disclosed,
reproduced or used, except as authorized in writing by Wi2Wi, Inc.

Copyright © 2016 Wi2Wi, Inc.

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Table of Contents

1. Overview ............................................................................................................................................................. 5

1.1 Features ................................................................................................................................ 5

1.2 IEEE 802.11 Standards............................................................................................................... 5

1.3 Packaging .............................................................................................................................. 6

1.4 Memory .................................................................................................................................. 6

1.5 WLAN MAC ........................................................................................................................... 6

1.6 WLAN Radio .......................................................................................................................... 6

1.7 Peripheral Bus Interfaces ....................................................................................................... 7

2. System Description ............................................................................................................................................. 7

2.1 Block Diagram ....................................................................................................................... 7

2.2 Pin Diagram and Description ................................................................................................. 8

2.3 Physical Dimensions and Pad Locations .............................................................................. 10

3. Electrical Characteristics ................................................................................................................................ 11

4. Voltage Domains .............................................................................................................................................. 12

5. WLAN External Host Interface ...................................................................................................................... 13

5.1 SDIO Timing Diagrams ........................................................................................................ 13

6. WLAN Power-Save Modes .............................................................................................................................. 14

6.1 Full Power-Down Mode2 ...................................................................................................... 14

6.2 IEEE Power Save ................................................................................................................ 14

6.3 Deep Sleep .......................................................................................................................... 15

7. Antenna and Clock .......................................................................................................................................... 15

8. Software Specifications .................................................................................................................................... 15

8.1 Host Processor .................................................................................................................... 17

9. Reference Schematics ...................................................................................................................................... 17

10. Manufacturing Notes ....................................................................................................................................... 18

10.1 Shield Marking ..................................................................................................................... 18

10.2 Storage and Baking Instructions .......................................................................................... 18

10.3 Recommended Reflow Profile .............................................................................................. 18

11. Ordering Information ...................................................................................................................................... 20

12. Data Sheet Status ............................................................................................................................................. 20

13. Certifications .................................................................................................................................................... 21

14. References ......................................................................................................................................................... 22

14.1 Specifications ....................................................................................................................... 22

14.2 Trademarks, Patents and Licenses ...................................................................................... 22

14.3 Disclosures .......................................................................................................................... 22

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Revision

Revision Date

Originator

Changes

0.4

10/13/2016

SA

Initial version Datasheet

0.5

11/21/2016

DS

Added Certification text under Section 13

0.6

12/11/2016

SA

Added a note under Table 2: Electrical Characteristics

0.7

02/02/2017

SA

Matched power numbers to certification testing in Table 2

0.9

02/06/2017

DS

Noted under Certifications that any external antenna via
u.FL Conn or RF Pad must be certified, Corrected avg
and peak output TX power values in Table 2

List of Figures

Figure 1: Block Diagram ............................................................................................................................ 7

Figure 2 : WM825B00 Module Pin Diagram – Top View ......................................................................... 8

Figure 3: SDIO FS Timing ....................................................................................................................... 13

Figure 4: SDIO HS Timing ....................................................................................................................... 13

Figure 5: Stack Diagram ........................................................................................................................... 16

Figure 6: EVB Reference Schematics ....................................................................................................... 17

Figure 7: Shield Marking – Top View ...................................................................................................... 18

Figure 8: Recommended Reflow Profile .................................................................................................. 19

List of Tables:

Table 1: Pin Description ............................................................................................................................. 8

Table 2: Electrical Characteristics ............................................................................................................ 11

Table 3: 3.3V Voltage Domain Signal Limits .......................................................................................... 12

Table 4: 1.8V Voltage Domain Signal Limits .......................................................................................... 12

Table 5: SDIO Timing Data ...................................................................................................................... 14

Table 6: Ordering Information for Modules ............................................................................................. 20

Table 7: Ordering Information for Evaluation Kits .................................................................................. 20

Revision History:

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1. Overview

WM825B00 is a oplete ieless susyste ith idusty’s est itegatio i a sall fo fato,
featuring full 802.11 b/g/n WLAN capabilities with excellent performance. WM825B00 is part of
WiWi’s Maximum Performance (MX) series. It includes integrated MAC, baseband, RF front-end, PA,
crystal, Tx/Rx switch, filter and OTP memory for calibration data and MAC address storage. This
module also has an onboard chip antenna and u.Fl connector. This module is fully optimized to yield
excellent throughput and receive sensitivity performance through careful design. It supports SDIO and
USB host interfaces. This module is available in industrial, extended and commercial operating
temperature variants.

1.1 Features

 Compact design for easy integration: 12.5mm x 16mm x 1.76mm
 QFN module with 32pins
 Single-band (2.4 GHz) Wi-Fi 802.11 b/g/n
 20 MHz channel bandwidth, 1x1 SISO operation
 Optimized RF and electrical design for better performance in co-existence with other wireless

standards

 Support for SDIO and USB host interfaces
 SDIO HS up to 50 MHz, 4 bit
 Antenna Options: Chip Antenna, u.FL Connector, RF Pad
 Support for Antenna Diversity
 Operating system support for Linux
 Support for Station Mode, AP Mode, and Wi-Fi Direct Mode
 WEP, WPA, WPA2 (Wi-Fi Protected Access)
 Certifications: FCC, IC, CE
 Green/ROHS compliant
 Internal 38.4 MHz crystal clock
 Low power operation: Deep Sleep and IEEE Power Save modes
 OTP memory (eliminates need for external EEPROM)
 Single power supply of 3.3V

1.2 IEEE 802.11 Standards

 802.11b data rates of 1, 2, 5.5 and 11 Mbps (DSSS/CCK Modulation)
 802.11g data rates of 6, 9, 12, 18, 24, 36, 48 and54 Mbps (OFDM Modulation) for multimedia

 802.11g/b performance enhancements
 802.11n compliant with maximum data rates up to72.2 Mbps (20 MHz channel)
 802.11d international roaming

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content transmission

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 802.11e quality of service
 802.11h transmit power control
 802.11i enhanced security
 802.11k radio resource measurement
 802.11n block acknowledgement extension
 802.11r fast hand-off for AP roaming
 802.11w protected management frames
 Fully supports clients (stations) implementing IEEE Power Save mode
 Wi-Fi direct connectivity

1.3 Packaging

 32-pins with pads on 3 sides of the module and 4 ground pads in the middle of the module on

the bottom side.

1.4 Memory

 Internal SRAM for TX frame queues/RX data buffers
 Boot ROM
 OTP

1.5 WLAN MAC

 Simultaneous peer to peer and infrastructure modes
 RTS/CTS for operating under DCF
 Hardware filtering of 32 multicast addresses.
 On-chip TX and RX FIFO for maximum throughput
 Open system and shared key authentication services
 A-MPDU RX (de-aggregation) and TX (aggregation)
 Reduce Inter-Frame Spacing (RIFS) receive
 Management information base counters
 Radio resource measurement counters
 Quality of Service queues
 Block acknowledgement extension
 Multiple BSSID and multiple station operation
 Transmit rate adaption
 Long and Short preamble generation on a frame by frame basis for 802.11b frames
 Mobile Hotspot

1.6 WLAN Radio

 Integrated Direct Conversion Radio
 Integrated T/R switch, PA, and LNA
 Integrated Antenna and Antenna Connector

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1.7 Peripheral Bus Interfaces

 Clocked serial unit
 UART (debug) interface

2. System Description

WM825B00 is a complete module, combination of the 88W8801 802.11b/g/n,1 x 1 SISO device and all
the components needed to operate the radio. It preserves characteristics from the chipset while
providing optimized system level functionality and performance.

2.1 Block Diagram

Figure 1 shows a block diagram of WM825B00 module.

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Figure 1: Block Diagram

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