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Table Of Contents

WGM160P Wi-Fi

Module Data Sheet

The WGM160P is an ultra low power standalone Wi-Fi

module targeted for applications

requiring superior RF performance in noisy environments, low power consumption, high

security, integrated customer applications and fast time to market.

The WGM160P module integrates all of the necessary elements required for a cloud

connected IoT Wi-Fi application, including 802.11b/g/n radio, integrated chip antenna,

certifications, microcontroller, Wi-Fi and IP stacks, HTTP server, and multiple protocols,

such as TCP and UDP. Co-existence with external 2.4GHz transceivers is supported.

WGM160P can be configured to concurrently act as a Wi-Fi client and a Wi-Fi access

point, which is ideal for user friendly device provisioning. WGM160P can natively host C-

applications, removing the need for an external host controller. Alternatively, the Wi-Fi

Module can run in Network Co-Processor (NCP) mode, leaving the complexity of TCP/IP

networking to the module so that the customer’s own host controller can be fully dedica-

ted to processing the customer application tasks. The

WGM160P module has highly

flexible host and peripheral hardware interfaces for wide application use.

This module also supports Gecko OS, a comprehensive software suite designed to sim-

plify your Wi-Fi, application, device management and cloud connectivity development

process.

KEY POINTS

• Available with integrated chip antenna or

an RF pin

•

Antenna diversity supported via secondary

RF pin

•

IEEE 802.11 b/g/n compliant

• TX power: +16 dBm

• RX sensitivity: -95.5 dBm

• CPU core: 32-bit ARM® Cortex-M4

• Flash memory: 2 MB

• RAM: 512 kB

• Concurrent mode: Wi-Fi AP and STA

• Ultra low power consumption

• Wi-Fi Alliance certified (pending)

• Modular certification

• CE, FCC, ISED

• Japan, KC (pending)

• End-to-end security

• Built-in 10/100 Ethernet Support

• Gecko OS support

• Size: 23.8 mm x 14.2 mm x 2.3 mm

32-bit bus

Lowest power mode with peripheral operational:

EM2 – Deep Sleep

EM1 - Sleep

EM4H - Hibernate

EM4S - Shutoff

EM0 - Active

EM3 - Stop

Core / Memory

Flash Program

Memory

RAM Memory

ARM Cortex

M4 processor

with FPU and

MPU

Debug Interface

LDMA

Controller

ETM

Other

CRYPTO

CRC

Energy Management

Brown-Out

Detector

DC-DC

Converter

Voltage

Regulator

Voltage/Temp

Monitor

Power-On Reset

Clock Management

High Frequency

RC Oscillator

Ultra Low Freq.

RC Oscillator

Universal HF RC

Oscillator

Low Frequency

XTAL + Oscillator

Low Frequency

RC Oscillator

Auxiliary High

Freq. RC Osc.

High Frequency

Crystal Oscillator

PLL

Analog Interfaces

Low Energy LCD

Controller

IDAC

Operational

Amplifier

ADC

VDAC

Analog

Comparator

Capacitive

Sensing

Backup Domain

Peripheral Reflex System

Serial Interfaces

UART

LEUSB

(crystal free)

I/O Ports Timers and Triggers

Low Energy

Sensor IF

Timer/Counter

Low Energy Timer

Watchdog Timer

CRYOTIMER

External

Interrupts

Pin Reset

General

Purpose I/O

Pin Wakeup

Real Time Counter

and Calendar

Pulse Counter

Real Time Counter

Quad-SPI

USART

Low Energy

UART

CAN

10/100 Ethernet

True Random

Number Generator

SMU

Wi-Fi Radio

2.4 GHz

Transceiver

Diversity Input

802.11 b/g/n

MODEM

PTA support

Certified Module

Antenna

Radio XTAL

Matching

silabs.com | Building a more connected world. Preliminary Rev. 0.5

This information applies to a product under development. Its characteristics and specifications are subject to change without notice.

Summary of content (68 pages)

PAGE 1
WGM160P Wi-Fi® Module Data Sheet The WGM160P is an ultra low power standalone Wi-Fi® module targeted for applications requiring superior RF performance in noisy environments, low power consumption, high security, integrated customer applications and fast time to market. KEY POINTS The WGM160P module integrates all of the necessary elements required for a cloud connected IoT Wi-Fi application, including 802.
PAGE 2
WGM160P Wi-Fi® Module Data Sheet Key Features 1. Key Features The key features of the WGM160P module are listed below. Radio Features • Built-in Antenna (optional) • TX Power: +16 dBm • RX Sensitivity: -95.5 dBm • Superior blocking performance Wi-Fi Features • 802.11: b/g/n • Bit rate: up to 72.2 Mbps • 802.11 Security: WPA2/WPA Personal • STA (Station Mode) • SoftAP (Soft Access Point Mode) Electrical Characteristics • Supply voltage: 3.0V to 3.
PAGE 3
WGM160P Wi-Fi® Module Data Sheet Ordering Information 2. Ordering Information Table 2.1. Ordering Information Part Number Protocol Max TX Power Flash/Ram (kB) LF XTAL Antenna GPIO Carrier WGM160PX22KGA2 Wi-Fi (802.11 b/g/n) 16 dBm 2048 / 512 Included Built-in Up to 31 Cut Tape WGM160PX22KGA2R Wi-Fi (802.11 b/g/n) 16 dBm 2048 / 512 Included Built-in Up to 31 Reel WGM160P022KGA2 Wi-Fi (802.11 b/g/n) 16 dBm 2048 / 512 None Built-in Up to 31 Cut Tape WGM160P022KGA2R Wi-Fi (802.
PAGE 4
Table of Contents 1. Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.2 Wi-Fi Supported 2.4 GHz ISM Modulations, BW, and Channels . . . . . . . . . . . . . 6 4. Electrical Specifications . . .
PAGE 5
11.3 FCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39 11.4 ISED Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 11.5 Locating the Module Close to Human Body . . . . . . . . . . . . . . . . . . . .42 12. Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 silabs.com | Building a more connected world. Preliminary Rev. 0.
PAGE 6
WGM160P Wi-Fi® Module Data Sheet System Overview 3. System Overview 3.1 Introduction The WGM160P module combines the WF200 Wi-Fi transceiver with an EFM32GG11 microcontroller to deliver a complete and certified standalone Wi-Fi solution, with the ability to run customer application on an Cortex M4 processor. This device supports Gecko OS, a comprehensive software solution that simplifies the Wi-Fi , application and cloud connectivity development process to reduce time to market.
PAGE 7
WGM160P Wi-Fi® Module Data Sheet Electrical Specifications 4. Electrical Specifications All electrical parameters in all tables are specified under the following conditions, unless stated otherwise: • Typical values are based on TAMB = 25 °C; VVBAT = 3.3V; Center Frequency = 2,437 MHz. • Radio performance numbers are measured in conducted mode, based on Silicon Laboratories reference designs using output power-specific external RF impedance-matching networks for interfacing to a 50 Ω antenna port.
PAGE 8
WGM160P Wi-Fi® Module Data Sheet Electrical Specifications 4.2 Operating Conditions Table 4.2. Recommended Operating Conditions Parameter Symbol Ambient operating temperature Nominal supply voltage to VBAT1 Test Condition Min Typ Max Unit TAOP -40 — 85 °C VVBAT 3.0 3.3 3.6 V Note: 1. Operating outside of the recommended voltage supply range is not supported.
PAGE 9
WGM160P Wi-Fi® Module Data Sheet Electrical Specifications 4.4 Digital I/O Specifications Table 4.4.
PAGE 10
WGM160P Wi-Fi® Module Data Sheet Electrical Specifications 4.5 RF Transmitter General Characteristics Unless otherwise indicated, typical conditions are: Operating Ambient Temp = 25 °C, VBAT = 3.3 V, center frequency = 2,437 MHz, and measured in 50 Ω test equipment attached at antenna port. Measurements for this specification are made at the 50 Ω Antenna Port. See Section 5.1.1 Antenna Ports.
PAGE 11
WGM160P Wi-Fi® Module Data Sheet Electrical Specifications 4.6 RF Receiver General Characteristics Unless otherwise indicated, typical conditions are: Operating Ambient Temp = 25 °C, VBAT = 3.3 V, center frequency = 2,437 MHz, and measured in 50 Ω test equipment attached at antenna port. Measurements for this specification are made at the 50 Ω Antenna Port. See Section 5.1.1 Antenna Ports. Table 4.6.
PAGE 12
WGM160P Wi-Fi® Module Data Sheet Electrical Specifications 4.8 Microcontroller Peripherals WGM160P offers an extensive list of peripherals, some of which are listed below: • 12-bit ADC • 12-bit DAC • GPIO • USART (UART/SPI/I2S) • QSPI with Execute In Place (XIP) support • Capacitive Touch Sensing in all GPIOs • LESENSE • 10/100 Ethernet MAC with RMII interface (50 MHz external crystal required) • USB device (2.
PAGE 13
WGM160P Wi-Fi® Module Data Sheet Typical Applications and Connections 5. Typical Applications and Connections For more information, see UG384: WGM160P Hardware Design Users Guide. 5.1 RF Connections 5.1.1 Antenna Ports The WGM160P offers two RF ports that support antenna diversity using an internal switch. In applications with only one antenna, the unused port should be terminated to ground with a 47-51 Ω resistor.
PAGE 14
WGM160P Wi-Fi® Module Data Sheet Typical Applications and Connections 5.3 Example Schematic Note: RF1 pin connected internally to module antenna in WGM160PX22KGAx. Figure 5.1. Example Schematic for NCP Application silabs.com | Building a more connected world. Preliminary Rev. 0.
PAGE 15
WGM160P Wi-Fi® Module Data Sheet Gecko OS Features 6. Gecko OS Features The Gecko OS software supplied with the WGM160P provides a wide range of features beyond the underlying hardware, and supports application development via its command API. For complete documentation of Gecko OS, see https://docs.silabs.com/gecko-os/.
PAGE 16
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions 7. Pin Descriptions 7.1 WGM160P Device Pinout Figure 7.1. WGM160P Device Pinout The following table provides package pin connections and general descriptions of pin functionality. For detailed information on the supported features for each GPIO pin, see 7.2 GPIO Functionality or 7.3 Alternate Pin Functionality. Table 7.1. WGM160P Device Pinout Pin Name ANT_GND Pin(s) 1 2 54 55 Description Antenna ground. silabs.com | Building a more connected world.
PAGE 17
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions Pin Name Pin(s) Description GND 4 8 9 10 11 23 27 30 33 43 52 Ground. Connect all ground pins to ground plane. PTA_TX_CO NF 6 PTA_FREQ Pin Name Pin(s) Description VBAT 5 Module power supply PTA TX_CONF pin. These pins can be used to manage co-existence with another 2.4 GHz radio. PTA_RF_AC T 7 PTA RF_ACT pin. These pins can be used to manage co-existence with another 2.4 GHz radio. 12 PTA FREQ pin.
PAGE 18
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions 7.2 GPIO Functionality A wide selection of alternate functionality is available for multiplexing to various pins. The following table shows the name of each GPIO pin, followed by the functionality available on that pin. Refer to 7.3 Alternate Pin Functionality for a list of GPIO locations available for each function. Full peripheral features and flexibility are not supported with all software architectures.
PAGE 19
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions GPIO Name Pin Alternate Functionality / Description Analog BUSBY PA6 BUSAX LCD_SEG19 Timers TIM3_CC0 #6 WTIM0_CC0 #1 LETIM1_OUT1 #0 PCNT1_S1IN #0 BUSAY PA15 BUSBX TIM3_CC2 #0 LCD_SEG12 BUSAY PB3 BUSBX LCD_SEG20 / LCD_COM4 TIM1_CC3 #2 WTIM0_CC0 #6 PCNT1_S0IN #1 ETH_MDC #3 U0_RTS #2 LEU1_RX #1 ETH_MDIO #3 US2_CLK #3 Other PRS_CH6 #0 ACMP0_O #4 ETM_TCLK GPIO_EM4WU1 PRS_CH15 #0 ETH_MDIO #0 US2_TX #1 PRS_CH19 #0 US3_TX #2 ACMP0_O #7 QSPI0_DQ4
PAGE 20
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions GPIO Name PB13 PB14 Pin Alternate Functionality / Description Analog Timers Communication BUSAY TIM6_CC0 US0_CLK #4 BUSBX WTIM1_CC0 #0 US1_CTS HFXTAL_P PCNT2_S0IN #2 LEU0_TX #1 BUSBY TIM6_CC1 US0_CS BUSAX WTIM1_CC1 US1_RTS HFXTAL_N PCNT2_S1IN #2 LEU0_RX #1 TIM0_CC0 #5 PC4 BUSACMP0Y TIM0_CDTI2 #3 BUSACMP0X TIM2_CC2 OPA0_P LETIM0_OUT0 #3 PCNT1_S0IN #3 PC5 PD6 US2_CLK #0 U0_TX #4 U1_CTS #4 I2C1_SDA #0 Other CMU_CLKI0 #3 PRS_
PAGE 21
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions GPIO Name PE7 Pin Alternate Functionality / Description Analog Timers BUSCY TIM3_CC2 #3 BUSDX TIM5_CC0 LCD_COM3 WTIM1_CC0 #5 BUSDY PE14 BUSCX LCD_SEG10 BUSCY PE15 BUSDX LCD_SEG11 Communication US0_TX US3_RX #1 BUSDY BUSCX TIM2_CDTI1 US0_CTS #0 PRS_CH13 TIM3_CC0 #0 QSPI0_SCLK ETM_TD2 #4 LEU0_TX #2 ETH_RMIITXD0 TIM2_CDTI2 US0_RTS #0 PRS_CH14 TIM3_CC1 #0 QSPI0_DQS ETM_TD3 #4 LEU0_RX #2 TIM0_CC0 #4 CAN0_RX WTIM0_CC1 #4 US1_CLK #
PAGE 22
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions 7.3 Alternate Pin Functionality A wide selection of alternate functionality is available for multiplexing to various pins. The following table shows the name of the alternate functionality in the first column, followed by columns showing the possible LOCATION bitfield settings and the associated GPIO pin. Refer to 7.2 GPIO Functionality for a list of functions available on each GPIO pin.
PAGE 23
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions Alternate Functionality LOCATION 0-3 4-7 0: PF5 Debug-interface JTAG Test Data In. DBG_TDI Note that this function becomes available after the first valid JTAG command is received, and has a built-in pull up when JTAG is active. 0: PF2 Debug-interface JTAG Test Data Out. DBG_TDO ETH_MDC ETH_MDIO ETH_RMIICRSDV Description Note that this function becomes available after the first valid JTAG command is received.
PAGE 24
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions Alternate Functionality I2C0_SDA I2C1_SCL I2C1_SDA I2C2_SCL LOCATION 0-3 0: PA0 4-7 5: PF0 1: PD6 0: PC5 4: PF2 1: PB12 0: PC4 1: PB11 0: PF5 2: PF11 Description I2C0 Serial Data input / output. I2C1 Serial Clock Line input / output. I2C1 Serial Data input / output. I2C2 Serial Clock Line input / output. I2C2_SDA 2: PF10 I2C2 Serial Data input / output. IDAC0_OUT 0: PB11 IDAC0 output. LCD_COM1 0: PE5 LCD driver common line number 1.
PAGE 25
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions Alternate Functionality LES_CH5 LOCATION 0-3 4-7 0: PC5 Description LESENSE channel 5. 0: PD6 LETIM0_OUT0 1: PB11 Low Energy Timer LETIM0, output channel 0. 2: PF0 3: PC4 1: PB12 LETIM0_OUT1 2: PF1 Low Energy Timer LETIM0, output channel 1. 3: PC5 LETIM1_OUT0 LETIM1_OUT1 LEU0_RX 4: PB5 Low Energy Timer LETIM1, output channel 0. 0: PA6 4: PB6 Low Energy Timer LETIM1, output channel 1. 1: PB14 4: PA0 2: PE15 LEUART0 Receive input.
PAGE 26
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions Alternate Functionality PCNT2_S1IN PRS_CH0 LOCATION 0-3 4-7 2: PB14 3: PF11 0: PA0 3: PF2 Description Pulse Counter PCNT2 input number 1. Peripheral Reflex System PRS, channel 0. PRS_CH1 0: PA1 Peripheral Reflex System PRS, channel 1. PRS_CH2 1: PF5 Peripheral Reflex System PRS, channel 2. PRS_CH3 3: PA0 Peripheral Reflex System PRS, channel 3. PRS_CH4 2: PF1 Peripheral Reflex System PRS, channel 4.
PAGE 27
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions Alternate Functionality LOCATION 0-3 4-7 Description QSPI0_DQ2 1: PA4 Quad SPI 0 Data 2. QSPI0_DQ3 1: PA5 Quad SPI 0 Data 3. QSPI0_DQ4 1: PB3 Quad SPI 0 Data 4. QSPI0_DQ5 1: PB4 Quad SPI 0 Data 5. QSPI0_DQ6 1: PB5 Quad SPI 0 Data 6. QSPI0_DQ7 1: PB6 Quad SPI 0 Data 7. QSPI0_DQS 1: PE15 Quad SPI 0 Data S. QSPI0_SCLK 1: PE14 Quad SPI 0 Serial Clock.
PAGE 28
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions Alternate Functionality TIM3_CC2 LOCATION 0-3 4-7 0: PA15 4: PA2 2: PE5 5: PA5 Description Timer 3 Capture Compare input / output channel 2. 3: PE7 TIM4_CC0 2: PF5 Timer 4 Capture Compare input / output channel 0. TIM5_CC0 1: PE7 Timer 5 Capture Compare input / output channel 0. TIM5_CC1 0: PE5 6: PF10 Timer 5 Capture Compare input / output channel 1. TIM5_CC2 0: PE6 6: PF11 Timer 5 Capture Compare input / output channel 2.
PAGE 29
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions Alternate Functionality US1_CS LOCATION 0-3 4-7 2: PF1 Description USART1 chip select input / output. US1_CTS 5: PB13 USART1 Clear To Send hardware flow control input. US1_RTS 5: PB14 USART1 Request To Send hardware flow control output. 5: PA0 USART1 Asynchronous Receive. 6: PA2 USART1 Synchronous mode Master Input / Slave Output (MISO). 5: PF2 USART1 Asynchronous Transmit. Also used as receive input in half duplex communication.
PAGE 30
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions Alternate Functionality LOCATION 0-3 4-7 VDAC0_OUT0 / OPA0_OUT 0: PB11 VDAC0_OUT1 / OPA1_OUT 0: PB12 WTIM0_CC0 1: PA6 6: PB3 0: PE5 4: PF0 WTIM0_CC1 WTIM0_CC2 Digital to Analog Converter DAC0 output channel number 1. 4: PF1 6: PB5 WTIM0_CDTI2 WTIM1_CC0 Digital to Analog Converter DAC0 output channel number 0.
PAGE 31
WGM160P Wi-Fi® Module Data Sheet Pin Descriptions Alternate Functionality Location Priority ETH_RMIITXEN 0: PA0 High Speed TIM0_CC0 3: PB6 Non-interference US2_CLK 5: PF2 High Speed US2_CS 5: PF5 High Speed US2_RX 5: PF1 High Speed US2_TX 5: PF0 High Speed silabs.com | Building a more connected world. Preliminary Rev. 0.
PAGE 32
WGM160P Wi-Fi® Module Data Sheet Package Specifications 8. Package Specifications 8.1 Package Outline Figure 8.1. WGM160P Package Outline silabs.com | Building a more connected world. Preliminary Rev. 0.
PAGE 33
WGM160P Wi-Fi® Module Data Sheet Package Specifications 8.2 Recommended PCB Land Patterns Figure 8.2. WGM160P22A Land Pattern silabs.com | Building a more connected world. Preliminary Rev. 0.
PAGE 34
WGM160P Wi-Fi® Module Data Sheet Package Specifications Figure 8.3. WGM160P22N Land Pattern silabs.com | Building a more connected world. Preliminary Rev. 0.
PAGE 35
WGM160P Wi-Fi® Module Data Sheet Package Specifications 8.3 Package Marking ANT WGM160Pxxxxxxx Model: WGM160P22A Certification Marks YYWWTTTTTT www.silabs.com Pin#1 Location WGM160Pxxxxxxx Model: WGM160P22N Certification Marks YYWWTTTTTT www.silabs.com Pin#1 Location Figure 8.4.
PAGE 36
WGM160P Wi-Fi® Module Data Sheet Soldering Recommendations 9. Soldering Recommendations It is recommended that final PCB assembly of this product follows the industry standard as identified by the Institute for Printed Circuits (IPC). This product is assembled in compliance with the J-STD-001 requirements and the guidelines of IPC-AJ-820. Surface mounting of this product by the end user is recommended to follow IPC-A-610 to meet or exceed class 2 requirements.
PAGE 37
WGM160P Wi-Fi® Module Data Sheet Tape and Reel Dimensions 10. Tape and Reel Dimensions All dimensions in mm unless otherwise indicated. Figure 10.1. Carrier Tape Dimensions All dimensions in mm unless otherwise indicated. Figure 10.2. Reel Dimensions silabs.com | Building a more connected world. Preliminary Rev. 0.
PAGE 38
WGM160P Wi-Fi® Module Data Sheet Certifications 11. Certifications This section details certification status of the module in various regions. The address for the module manufacturer and certification applicant is: SILICON LABORATORIES FINLAND OY Alberga Business Park, Bertel Jungin aukio 3, 02600 Espoo, Finland 11.1 Qualified External Antenna Types This device has been certified with an integrated chip antenna as well as external antennas connected to either RF port or both.
PAGE 39
WGM160P Wi-Fi® Module Data Sheet Certifications 11.3 FCC 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 undesirable operation. Any changes or modifications not expressly approved by Silicon Labs could void the user’s authority to operate the equipment.
PAGE 40
WGM160P Wi-Fi® Module Data Sheet Certifications 11.4 ISED Canada ISED This radio transmitter (IC: 5123A-WGM160P) has been approved by Innovation, Science and Economic Development Canada (ISED Canada, formerly Industry Canada) to operate with the antenna types listed above, with the maximum permissible gain indicated. Antenna types not included in this list, having a gain greater than the maximum gain listed, are strictly prohibited for use with this device.
PAGE 41
WGM160P Wi-Fi® Module Data Sheet Certifications ISED (Français) ISED a approuvé l’utilisation de cet émetteur radio (IC: 5123A-WGM160P) en conjonction avec des antennes de type dipolaire à 2.14dBi ou de son antenne intégrée. L’utilisation de tout autre type d’antenne avec ce composant est proscrite. Ce composant est conforme aux normes RSS, exonérées de licence d'ISED. Son mode de fonctionnement est soumis aux deux conditions suivantes: 1. Ce composant ne doit pas générer d’interférences. 2.
PAGE 42
WGM160P Wi-Fi® Module Data Sheet Certifications 11.5 Locating the Module Close to Human Body When using the module in an application where the radio is located close to human body, the human RF exposure must be evaluated. FCC, ISED, and CE all have different standards for evaluating the RF exposure, and because of this, each standard will require a different minimum separation distance between the module and human body.
PAGE 43
WGM160P Wi-Fi® Module Data Sheet Revision History 12. Revision History Revision 0.5 April 2019 • Updated naming for Sections 7.2 GPIO Functionality and 7.3 Alternate Pin Functionality • Removed TBD Idle currents from Table 4.3 Power Consumption on page 8 and changed term "Sleep" to "Standby" • Updated Table 4.4 Digital I/O Specifications on page 9 • Updated Table 4.6 RF Receiver Characteristics on page 11 • Updated min PCBx_mm to 40 mm in Table 4.7 Radiated Characteristics on page 11 • Updated Section 9.
PAGE 44
Simplicity Studio One-click access to MCU and wireless tools, documentation, software, source code libraries & more. Available for Windows, Mac and Linux! IoT Portfolio www.silabs.com/IoT SW/HW www.silabs.com/simplicity Quality www.silabs.com/quality Support and Community community.silabs.
PAGE 45
UG384: WGM160P Hardware Design User’s Guide The purpose of this guide is to help users design WiFi applications using the WGM160P. This guide includes information for schematics and layout. Some options available with WGM160P hardware are not available with all software architectures, so the pin features versus software are detailed. KEY FEATURES • Schematic guidelines • Package information • Layout guidelines silabs.com | Building a more connected world. Rev. 0.
PAGE 46
Table of Contents 1. WGM160P Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. WGM160P Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Pin Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Power Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 RESETn Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 47
UG384: WGM160P Hardware Design User’s Guide WGM160P Pinout 1. WGM160P Pinout WGM160P is a 23.8 mm x 14.2 mm x 2.3 mm PCB module. The diagram below describes pinout (top view) Figure 1.1. WGM160P Device Pinout silabs.com | Building a more connected world. Rev. 0.
PAGE 48
UG384: WGM160P Hardware Design User’s Guide WGM160P Pin Description 2. WGM160P Pin Description 2.1 Pin Table Table 2.1. WGM160P Device Pinout Pin Name Pin(s) Description ANT_GND 1 2 54 55 Antenna ground. GND 4 8 9 10 11 23 27 30 33 43 52 Ground. Connect all ground pins to ground plane. PTA_TX_CO NF 6 PTA_FREQ Pin Name Pin(s) Description RF2 3 External antenna connection for diversity antenna. Terminate to ground with 47-51 Ohms if not connected to an antenna.
PAGE 49
UG384: WGM160P Hardware Design User’s Guide WGM160P Pin Description Pin Name Pin(s) Description Pin Name Pin(s) Description PE6 47 GPIO PE5 48 GPIO PC4 49 GPIO PA6 50 GPIO PA15 51 GPIO RF1 53 External antenna connection on WGM160P22N. Not connected on WGM160P22A. Note: 1. GPIO with 5V tolerance are indicated by (5V). 2.2 Power Pin The WGM160P module is supplied through the VBAT pin.
PAGE 50
UG384: WGM160P Hardware Design User’s Guide WGM160P Pin Description 2.5 Clocks The WGM160P module is available with two clock configurations. Table 2.3. WGM160P Low Power Clock Configuration Part Numbers Low Frequency Crystal WGM160PX22KGA2 Internal 32.768 kHz crystal WGM160PX22KGN2 WGM160P022KGA2 No crystal WGM160P022KGN2 A 32.768 kHz clock source is required to enable the lowest power operation in WiFi power save modes. 32.
PAGE 51
UG384: WGM160P Hardware Design User’s Guide WGM160P Pin Description 2.6 PTA Pins If an RF transceiver using the same 2.4 GHz band (e.g. Bluetooth) is located next to WGM160P, a Packet Transfer Arbitration (PTA) interface can be used to avoid mutual interference. In this case, the PTA pins are connected to the other transceiver. The PTA interface is highly programmable and can use 1, 2, 3, or 4 pins upon configuration.
PAGE 52
UG384: WGM160P Hardware Design User’s Guide WGM160P Pin Description 2.7.1.3 Implementation with Gecko OS The following table provides details on the various multifunction pin features supported through Gecko OS 4.0. Features such as SPI slave and USB will be supported in future releases of the Gecko OS. Table 2.6.
PAGE 53
UG384: WGM160P Hardware Design User’s Guide WGM160P Pin Description WGM160P Pin GG11 Port Default Function GPIO1 UART2 SPI3 I2C ADC PWM (GOS_ (GOS_ (GOS_ (GOS_ (GOS_ (GOS_ GPIO_x) UART_x) SPI_x) I2C_x) ADC_x) PWM_x) Ethernet (RMII) 38 PF5 GPIO 19 - 17 39 PC5 GPIO 20 - 18 41 PF10 USB DM 21 7 - 42 PF11 USB DP 22 - - 46 PE7 UART TX (Commands) 23 UART0 TX - 19 47 PE6 UART RX (Commands) 24 UART0 RX 8 20 48 PE5 GPIO 25 - 21 49 PC4 Bulk sflash S
PAGE 54
UG384: WGM160P Hardware Design User’s Guide Application Schematic Recommendations 3. Application Schematic Recommendations 3.1 Power Supply The WGM160P consists of two main blocks, the microcontroller (EFM32GG11) and the Wi-Fi network co-processor (WF200). The microcontroller contains an internal dc-dc converter that powers both the microcontroller core and the WiFi chip with a lower supply voltage to reduce overall power consumption.
PAGE 55
UG384: WGM160P Hardware Design User’s Guide Typical Application Schematics 4. Typical Application Schematics The diagrams below show a simple application schematic with WGM160P and its internal antenna. Figure 4.1. WFM160PX22KGA2 Schematics silabs.com | Building a more connected world. Rev. 0.
PAGE 56
UG384: WGM160P Hardware Design User’s Guide Layout Recommendations 5. Layout Recommendations 5.1 Generic RF Layout Considerations For custom designs, use the same number of PCB layers as are present in the reference design whenever possible. Deviation from the reference PCB layer count can cause different PCB parasitic capacitances, which can detune the matching network from its optimal form.
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UG384: WGM160P Hardware Design User’s Guide Layout Recommendations Use as much continuous and unified ground plane metallization as possible, especially on the top and bottom layers. Use as many ground stitching vias, especially near the GND pins, as possible to minimize series parasitic inductance between the ground pours of different layers and between the GND pins. Use a series of GND stitching vias along the PCB edges and internal GND metal pouring edges.
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UG384: WGM160P Hardware Design User’s Guide Layout Recommendations 5.3 Module Chip Antenna As is common for very small antennas, the antenna on WGM160P uses the ground plane edge to radiate, rather than just the antenna chip itself. The antenna on WGM160P is robust to the detuning effect of the proximity of various objects and makes the module easy to use with a consistent and reliable performance.
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UG384: WGM160P Hardware Design User’s Guide Layout Recommendations Figure 5.3. Details of Antenna Ground Clearance Figure 5.4. Details about Board Dimensions and Module Placement Any metallic objects in close proximity to the antenna will distort the antenna's electromagnetic fields and cause the antenna center frequency to shift, reducing performance.
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UG384: WGM160P Hardware Design User’s Guide Layout Recommendations Figure 5.5. Enclosure Clearance Recommendations Because the application board is part of the antenna circuit, its dimensions affect the antenna's efficiency and thus its achievable range. Narrower ground planes can be used but will result in compromised RF performance. The following two-dimensional radiation pattern plots have been measured on the BRD4321A board: Figure 5.6. WGM160P Radio Board BRD4321A with XYZ Axis Added silabs.
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UG384: WGM160P Hardware Design User’s Guide Layout Recommendations Figure 5.7. Typical 2D Radiation Pattern—Top View silabs.com | Building a more connected world. Rev. 0.
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UG384: WGM160P Hardware Design User’s Guide Layout Recommendations Figure 5.8. Typical 2D Radiation Pattern—Front View silabs.com | Building a more connected world. Rev. 0.
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UG384: WGM160P Hardware Design User’s Guide Layout Recommendations Figure 5.9. Typical 2D Radiation Pattern—Side View silabs.com | Building a more connected world. Rev. 0.
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UG384: WGM160P Hardware Design User’s Guide Recommendations for Certification 6. Recommendations for Certification Customers should refer to the datasheet for detailed recommendations about certification. silabs.com | Building a more connected world. Rev. 0.
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UG384: WGM160P Hardware Design User’s Guide Package Outline 7. Package Outline Figure 7.1. WGM160PX22KGA2 Package Outline silabs.com | Building a more connected world. Rev. 0.
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UG384: WGM160P Hardware Design User’s Guide Recommended PCB Land Pattern 8. Recommended PCB Land Pattern Figure 8.1. WGM160PX22KGA2/ WGM160P022KGA2 Recommended Land Footprint For WGM160P modules without antenna, there is no need for PCB antenna clearance. silabs.com | Building a more connected world. Rev. 0.
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UG384: WGM160P Hardware Design User’s Guide Recommended PCB Land Pattern Figure 8.2. WGM160PX22KGN2/ WGM160P022KGN2 Recommended Land Footprint silabs.com | Building a more connected world. Rev. 0.
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