WF121 Wi-Fi Module

802.11 Features

IEEE versions

802.11 b/g/n
Single stream

Symbol rates

up to 72.2Mbps

Throughput

up to 3.5Mbps over TCP

STA (client) mode

Yes

Access Point (AP) mode

up to 5 clients

Security

WPA2, WPA and WEP

Radio

Frequency

2.402GHz to 2480GHz

Transmit power

+17 dBm

Receiver sensitivity

-97 dBm

Typical line-of-sight range

300 - 500 meters

Antenna

Integrated ceramic chip
U.FL connector

Dimensions

Length

26.2 mm

Width

15.4 mm

Height

2.1 mm

Hardware

Host interfaces

UART, USB or SPI

GPIO

38 software configurable

SPI

up to 2

UART

up to 4
2 with flow control

I2C

ADC

up to 10 10-bit ADCs

PWM

Yes

Timers

up to 5 with input capture
Check software support status

Ethernet

RMII
Check software support status

Bluetooth co-existence

2-4 wire schemes

Power supply

2.7V to 3.6V

Operating temperature

-40 to +85C

Debug interface

Available (both MCU and Wi-Fi)

Current Consumption

TX peak current

400 mA

TX average

170 mA

RX peak

400 mA

RX average

170 mA

Idle

170 uA

Deep sleep

62 uA

MCU Features

Architecture

MIPS

Speed

80 MHz

RAM

128 kB (partially used by the firmware)

Flash

512 kB (partially used by the firmware)

Certifications

CE

EN300328, EN301489

FCC

FCC part 15 modular qualification

IC

Industry Canada modular qualification

South Korea

KCC certification

Japan

MIC Japan certification

Software

Host API

BGAPI binary protocol over UART, USB or SPI

IP protocols

IP, TCP, UDP, DHCP and DNS

HTTP

Embedded HTTP server

On-board applicaions

BGScript^TM scripting language

SDK

Bluegiga Wi-Fi Software and SDK