Microchip MRF24WB0MA 2.4GHz Wi－Fi解决方案

• Integrated low phase noise VCO, RF frequency synthesizer, PLL loop filter and PA

• Digital VCO and filter calibration

• Integrated RSSI ADC and I/Q DACs, RSSI readings available to host

• Balanced receiver and transmitter characteristics for low power consumption

MAC/Baseband Features:

• Hardware CSMA/CA access control, automatic ACK, and FCS creation and checking

• Automatic MAC packet retransmit

• Hardware Security Engine for AES and RC4-based ciphers

• Supports 802.1x, 802.1i security: WEP, WPA-PSK, and WPA-2-PSK.

MRF24WB0MA应用:

• Utility and Smart Energy

- Thermostats

- Smart Meters

- White Goods

- HVAC

• Consumer Electronics

- Remote Control

- Internet Radio

- Home Security

- Toys

• Industrial Controls

- Chemical Sensors

- HVAC

- Security Systems

- M2M Communication

• Remote Device Management

- Location and Asset Tracking

- Automotive

- Code Update

• Retail

- POS Terminals

- Wireless Price Tags

- Digital Remote

• Medical, Fitness, and Health care

- Glucose Meters

- Fitness Equipment

- Patient Asset Tracking

图1.MRF24WB0MA/MRF24WB0MB方框图

图2.MRF24WB0MA/MRF24WB0MB案例应用电路图

Wi-Fi通用演示板

The Wi-Fi Comm Demo Board provides a low-cost and portable development system for Microchip’s MRF24WB0MA 802.11b RF Transceiver module.

The Wi-Fi Comm Demo Board is preloaded with the demo software for the user to explore the features of the MRF24WB0MA Wi-Fi module. It is also expandable through an expansion interface, which allows the user to extend its functionality by adding various sensor expansion boards.

The Microchip Wi-Fi Comm Demo board provides a compact development platform for customers to evaluate Microchip’s Wi-Fi product offering. The demo board comes with onboard MRF24WB0MA Wi-Fi module which is FCC/IC/ETSI certified along with a PIC32 MCU.

The demo board comes preloaded with the demo software for the user to explore the features of the MRF24WB0MA Wi-Fi module. It is also expandable through an expansion interface, which allows the user to extend its functionality by adding various sensor expansion boards.

This demo quickly shows how the Microchip agency certified Wi-Fi module can help connect products to popular 802.11b networks.

> Clicking LED icons on the web page will change the status of the LED on the board.

> Pressing push buttons on the board will be indicated on the web page.

图3.Wi-Fi通用演示板外形图

Wi-Fi通用演示板主要特性:

Over-the-air data rate: 1 2 Mbps (802.11b)

Standard Wi-Fi™ range expectation

> Indoor range of 50m+ (150’) with built-in antenna

> Outdoor, line of sight, >400m (1,200+’)

Supports 802.11 Infrastructure and Ad Hoc modes

Wi-Fi通用演示板包括:

DV102411 Demo Board

> MRF24WB0MA Wi-Fi Module

> PIC32 MCU

2 AAA Lithium Batteries

Product Information Sheet

图4.Wi-Fi通用演示板元件布局图及主要元件

The Wi-Fi Comm Demo Board includes the following key features:

1. MRF24WMB0MA RF Transceiver module

2. PIC32MX695F512H 32-bit microcontroller

3. MCP1642 +3.3V Boost regulator

4. Three status indicator LEDs

5. One push-button switch for user input

6. Power ON/OFF slider switch

7. 6-pin debug port

8. 8-pin sensor port

图5.Wi-Fi通用演示板电路图