WF121-A-V2

WF121-A-V2 Datasheet

WF121 Wi-Fi MODULE

Part	Datasheet
WF121-A-V2	WF121-A-V2 (pdf)

Related Parts	Information
WF121-E-V2	WF121-E-V2

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WF121 Wi-Fi MODULE DATA SHEET Friday, 01 November 2013 Version Copyright 2000-2013 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. The WRAP, Bluegiga Access Server, Access Point and iWRAP are registered trademarks of Bluegiga Technologies. The Bluetooth trademark is owned by the Bluetooth SIG Inc., USA and is licensed to Bluegiga Technologies. All other trademarks listed herein are owned by their respective owners. Bluegiga Technologies Oy VERSION HISTORY Version Comment First version FCC and IC information added WF121-N layout guide Added power consumption measurements, regulatory info and some corrections Added unassociated idle consumption and a chapter about power saving modes Added CE information Removed details from the regulatory info Corrected typos in the pad function tables Reduced the list of supported coexistence schemes Added links to Microchip reference guide, some notes on the coexistence Added inversion notices to RTS/CTS for unambiguity Added notes on the USB data pins GPIO use being input only to pin function table Added note on the engineering sample order codes Additions to power supply description, rewrote power consumption section Bluegiga Technologies Oy TABLE OF CONTENTS 1 Ordering 2 Pin-out and Terminal Descriptions 3 Power 10 Power supply requirements 10 4 Microcontroller 11 5 Interfaces 12 General Purpose I/O pins 12 Serial 12 I2C/SPI 13 USB On-The-Go 13 Ethernet 14 Analog inputs 15 Timers 15 Parallel master 15 Microcontroller programming interface 15 RF Debug Interface 16 Bluetooth co-existence 16 CPU Clock 17 kHz External Reference 18 6 Example schematic 19 7 Radio 20 Wi-Fi Receiver 20 Wi-Fi Transmitter 20 Antenna switch for Bluetooth 16 8 21 9 Host 22 UART 22 SPI 22 10 Electrical characteristics 23 Absolute maximum ratings 23 Recommended operating conditions 23 Input/output terminal characteristics 24 Digital 24 Power consumption preliminary 25 Bluegiga Technologies Oy 11 RF Characteristics 27 12 Physical dimensions 29 13 Layout guidelines 30 30 31 Thermal considerations 32 EMC 32 14 Soldering recommendations 34 15 Certifications 35 CE 35 FCC and IC 35 FCC et IC 37 16 Qualified Antenna Types for 40 17 Contact 41 Bluegiga Technologies Oy WF121 is a self-contained Wi-Fi module providing a fully integrated 2.4GHz b/g/n radio and a 32-bit microcontroller MCU platform, making it an ideal product for embedded applications requiring simple, lowcost and low-power wireless TCP/IP connectivity. WF121 also provides flexible interfaces for connecting to various peripherals. WF121 allows end user applications to be embedded onto the on-board 32-bit microcontroller either using a simple BGScriptTM scripting language or for more sophisticated applications ANSI C-language. This cuts out the need of an external MCU and allows the development of smaller and lower-cost products. However WF121 can also be used in modem-like mode in applications where the external MCU is needed. With an integrated radio, antenna, single power supply, and regulatory certifications, WF121 provides a low-risk and fast time-to-market for applications requiring Internet connectivity. This combined with Bluegiga’s excellent customer service will turn your Internet-of-Things applications into reality. APPLICATIONS: • PoS terminals • RFID and laser scanners • Wi-Fi internet radios and audio streaming products • Wireless cameras • Video streaming • Portable navigation devices • Portable handheld devices • Wi-Fi medical sensors • Wireless picture frames KEY FEATURES: • 2.4GHz band IEEE b/g/n radio • Excellent radio performance: • TX power +17 dBm • RX sensitivity -97 dBm • Host interfaces: • 20Mbps UART • USB on-the-go • Peripheral interfaces: • GPIO, AIO and timers • I2C, SPI and UART • Ethernet • Embedded TCP/IP and MAC stacks: • IP, TCP, UDP, DHCP and DNS protocols • BGAPI host protocol for modem like usage • BGScriptTM scripting language or native C-development for self- contained applications • 32-bit embedded microcontroller 1 Ordering Information Product code WF121-A WF121-E WF121-N DKWF121 WF121 module with integrated antenna WF121 module with U.FL connector WF121 module with RF pin. Non-standard product, so minimum order quantity applies. Please contact WF121 development kit Note Modules with order code ending in are sold as engineering samples, while those with code are production units. The difference between the two is in the microcontroller version used, the version fixes a hardware bug that in some circumstances may cause rare bit errors. The modules differ in outlook in that the only has the Bluegiga logo and text “WF121” while versions also have FCC/IC ID codes and CE logo. Bluegiga Technologies Oy Page 7 of 41 2 Pin-out and Terminal Descriptions Figure 1 WF121 pinout Pad number Function VDD_3.3V VDD_PA 1, 16, 26, 45, 48, 50 GNDPAD BT_RF VBUS MCLR Module power supply RF power amplifier power supply Ground, connected together internally but should all be connected directly to a solid ground plane Thermal ground pad, should be soldered to a directly to a solid ground plane for improved thermal conductance Bluetooth coexistence antenna connection, connect to ground through a 51ohm resistor if coexistence is not used Antenna connection pad in N variant of the module, in other variants not connected USB VBUS input Module reset, also used for programming using a Microchip tool. Internal pull-up, can be left floating or connected to ground through a 100nF capacitor for delayed power-up reset note Microchip ICSP programming tools will not work with a capacitor Table 1 Single function pad descriptions Bluegiga Technologies Oy Page 8 of 41 PAD# 2 3 GPIO RB15 CN12 UART Ethernet EMDC ERXD1 Timer OCFB Analog AN15 Prog. Parallel PMA0 PMLL

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WF121 Wi-Fi MODULE

DATA SHEET

Friday, 01 November 2013 Version

Copyright 2000-2013 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. The WRAP, Bluegiga Access Server, Access Point and iWRAP are registered trademarks of Bluegiga Technologies. The Bluetooth trademark is owned by the Bluetooth SIG Inc., USA and is licensed to Bluegiga Technologies. All other trademarks listed herein are owned by their respective owners.

Bluegiga Technologies Oy

VERSION HISTORY Version

Comment

First version FCC and IC information added WF121-N layout guide Added power consumption measurements, regulatory info and some corrections Added unassociated idle consumption and a chapter about power saving modes Added CE information Removed details from the regulatory info Corrected typos in the pad function tables Reduced the list of supported coexistence schemes Added links to Microchip reference guide, some notes on the coexistence Added inversion notices to RTS/CTS for unambiguity Added notes on the USB data pins GPIO use being input only to pin function table Added note on the engineering sample order codes Additions to power supply description, rewrote power consumption section

Bluegiga Technologies Oy

TABLE OF CONTENTS
1 Ordering 2 Pin-out and Terminal Descriptions 3 Power 10

Power supply requirements 10 4 Microcontroller 11 5 Interfaces 12 General Purpose I/O pins 12 Serial 12 I2C/SPI 13 USB On-The-Go 13 Ethernet 14 Analog inputs 15 Timers 15 Parallel master 15 Microcontroller programming interface 15 RF Debug Interface 16 Bluetooth co-existence 16 CPU Clock 17 kHz External Reference 18 6 Example schematic 19 7 Radio 20 Wi-Fi Receiver 20 Wi-Fi Transmitter 20 Antenna switch for Bluetooth 16 8 21 9 Host 22 UART 22 SPI 22 10 Electrical characteristics 23 Absolute maximum ratings 23 Recommended operating conditions 23 Input/output terminal characteristics 24 Digital 24 Power consumption preliminary 25

Bluegiga Technologies Oy
11 RF Characteristics 27 12 Physical dimensions 29 13 Layout guidelines 30
30 31 Thermal considerations 32 EMC 32 14 Soldering recommendations 34 15 Certifications 35 CE 35 FCC and IC 35

FCC et IC 37 16 Qualified Antenna Types for 40 17 Contact 41

Bluegiga Technologies Oy

WF121 is a self-contained Wi-Fi module providing a fully integrated 2.4GHz b/g/n radio and a 32-bit microcontroller MCU platform, making it an ideal product for embedded applications requiring simple, lowcost and low-power wireless TCP/IP connectivity. WF121 also provides flexible interfaces for connecting to various peripherals.

WF121 allows end user applications to be embedded onto the on-board 32-bit microcontroller either using a simple BGScriptTM scripting language or for more sophisticated applications ANSI C-language. This cuts out the need of an external MCU and allows the development of smaller and lower-cost products. However WF121 can also be used in modem-like mode in applications where the external MCU is needed.

With an integrated radio, antenna, single power supply, and regulatory certifications, WF121 provides a low-risk and fast time-to-market for applications requiring Internet connectivity. This combined with Bluegiga’s excellent customer service will turn your Internet-of-Things applications into reality.

APPLICATIONS:
• PoS terminals
• RFID and laser scanners
• Wi-Fi internet radios and audio streaming products
• Wireless cameras
• Video streaming
• Portable navigation devices
• Portable handheld devices
• Wi-Fi medical sensors
• Wireless picture frames

KEY FEATURES:
• 2.4GHz band IEEE b/g/n radio
• Excellent radio performance:
• TX power +17 dBm
• RX sensitivity -97 dBm
• Host interfaces:
• 20Mbps UART
• USB on-the-go
• Peripheral interfaces:
• GPIO, AIO and timers
• I2C, SPI and UART
• Ethernet
• Embedded TCP/IP and MAC
stacks:
• IP, TCP, UDP, DHCP and DNS
protocols
• BGAPI host protocol for modem
like usage
• BGScriptTM scripting language or
native C-development for self-
contained applications
• 32-bit embedded microcontroller
1 Ordering Information

Product code

WF121-A WF121-E

WF121-N

DKWF121

WF121 module with integrated antenna

WF121 module with U.FL connector WF121 module with RF pin. Non-standard product, so minimum order quantity applies. Please contact WF121 development kit

Note Modules with order code ending in are sold as engineering samples, while those with code are production units. The difference between the two is in the microcontroller version used, the version fixes a hardware bug that in some circumstances may cause rare bit errors. The modules differ in outlook in that the only has the Bluegiga logo and text “WF121” while versions also have FCC/IC ID codes and CE logo.

Bluegiga Technologies Oy

Page 7 of 41
2 Pin-out and Terminal Descriptions

Figure 1 WF121 pinout

Pad number Function

VDD_3.3V

VDD_PA
1, 16, 26, 45, 48, 50

GNDPAD

BT_RF

VBUS

MCLR

Module power supply

RF power amplifier power supply

Ground, connected together internally but should all be connected directly to a solid ground plane

Thermal ground pad, should be soldered to a directly to a solid ground plane for improved thermal conductance

Bluetooth coexistence antenna connection, connect to ground through a 51ohm resistor if coexistence is not used

Antenna connection pad in N variant of the module, in other variants not connected

USB VBUS input

Module reset, also used for programming using a Microchip tool. Internal pull-up, can be left floating or connected to ground through a 100nF capacitor for delayed power-up reset note Microchip ICSP programming tools will not work with a capacitor

Table 1 Single function pad descriptions

Bluegiga Technologies Oy

Page 8 of 41

PAD# 2 3

GPIO

RB15 CN12

UART

Ethernet EMDC ERXD1

Timer OCFB

Analog AN15

Prog.

Parallel

PMA0 PMLL

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived WF121-A-V2 Datasheet file may be downloaded here without warranties.

Datasheet ID: WF121-A-V2 521942