Datasheet

ManualsBrandsMicrochip ManualsModulesISM module

 2014 Microchip Technology Inc. Advance Information DS70005173A-page 1

MRF24J40MD/ME

Features:

• IEEE Std. 802.15.4™ Compliant RF Transceiver

• Supports ZigBee

, MiWi™ Development

Environment Proprietary Wireless Networking

Protocols

• 4-Wire Serial Peripheral Interface (SPI) with

Interrupt

• Small size: 0.9" x 1.3" (22.9 mm x 33.0 mm),

Surface Mountable: Pin Compatible with

MRF24J40MB and MRF24J40MC

• Integrated Crystal, Internal Voltage Regulator,

Matching Circuitry, Power Amplifier, Low Noise

Amplifier

• PCB Antenna (MRF24J40MD), External Antenna

Connector (MRF24J40ME): Ultra Miniature

Coaxial (U.FL), 50Ω

• Easy Integration into Final Product: Minimize

Product Development, Quicker Time to Market

• Compliance:

- Modular Certified for the United States (FCC)

and Canada (IC)

- European R&TTE Directive Assessed Radio

Module

- Australia/New Zealand

• Compatible with Microchip microcontroller

families (PIC16, PIC18, PIC24, dsPIC33 and

PIC32)

• Range up to 4000 ft

Operational:

• Operating Voltage: 3.0V-3.6V (3.3V typical)

• Temperature Range: -40°C to +85°C Industrial

• Low-Current Consumption:

- Rx Mode: 32 mA (typical)

- Tx Mode: 140 mA (typical)

- Sleep: 10 A (typical)

RF/Analog Features:

• ISM Band 2.405 GHz-2.475 GHz Operation

• Data Rate: 250 kbps

• -104 dBm Typical Sensitivity with -23 dBm

Maximum Input Level

• +19 dBm Typical Output Power with 45 dB Tx

Power Control Range

• Integrated Low Phase Noise VCO, Frequency

Synthesizer and PLL Loop Filter

• Digital VCO and Filter Calibration

• Integrated RSSI ADC and I/Q DACs

• Integrated LDO

• High Receiver RSSI Dynamic Range

MAC/Baseband Features:

• Hardware CSMA-CA Mechanism, Automatic ACK

Response and FCS Check

• Independent Beacon, Transmit and GTS FIFO

• Supports all CCA modes and RSS/LQI

• Automatic Packet Retransmit Capable

• Hardware Security Engine (AES-128) with CTR,

CCM and CBC-MAC modes

• Supports Encryption and Decryption for MAC Sub

layer and Upper Layer

Pin Diagram:

GND

RESET

WAKE

SDO

SDI

SCK

GND

INT

11 GND

2.4 GHz IEEE Std. 802.15.4™

RF Transceiver Module with PA/LNA

Summary of content (7 pages)

PAGE 1
MRF24J40MD/ME 2.4 GHz IEEE Std. 802.15.4™ RF Transceiver Module with PA/LNA Features: Operational: • IEEE Std. 802.15.4™ Compliant RF Transceiver • Supports ZigBee®, MiWi™ Development Environment Proprietary Wireless Networking Protocols • 4-Wire Serial Peripheral Interface (SPI) with Interrupt • Small size: 0.9" x 1.3" (22.9 mm x 33.
PAGE 2
MRF24J40MD/ME 1.0 DEVICE OVERVIEW The MRF24J40MD/ME is a 2.4 GHz IEEE Std. 802.15.4™ compliant, surface mount module with integrated crystal, internal voltage regulator, matching circuitry, Power Amplifier (PA), Low Noise Amplifier (LNA) with PCB Trace Antenna (MRF24J40MD) or 50Ω external antenna connector (MRF24J40ME). The MRF24J40MD/ME module operates in the nonlicensed 2.4 GHz frequency band.
PAGE 3
MRF24J40MD/ME TABLE 1-1: PIN DESCRIPTION Pin Symbol Type Description 1 GND Ground 2 RESET DI Global hardware Reset pin 3 WAKE DI External wake-up trigger 4 INT DO Interrupt pin to microcontroller 5 SDI DI Serial interface data input 6 SCK DI Serial interface clock 7 SDO DO Serial interface data output from MRF24J40 8 CS DI Serial interface enable 9 NC — No connection Ground 10 VIN Power Power supply 11 GND Ground Ground 12 GND Ground Ground Legend: Pin t
PAGE 4
MRF24J40MD/ME 1.2 Mounting Details The MRF24J40MD/ME is a surface mountable module. Module dimensions are shown in Figure 1-3. The module Printed Circuit Board (PCB) is 0.032" thick with castellated mounting points on the edge. Figure 1-4 is a recommended host PCB footprint for the MRF24J40MD/ME. The MRF24J40MD has an integrated PCB antenna. For the best performance, follow the mounting details shown in Figure 1-5.
PAGE 5
MRF24J40MD/ME FIGURE 1-4: RECOMMENDED PCB FOOTPRINT FIGURE 1-5: MOUNTING DETAILS 1.2” Keep area around antenna (approximately 1.2 inches) clear of metallic structures for best performance Edge of PCB 1.2” 0.315” 0.4” PCB Ground Plane (Counterpoise) Underneath and extend as far as possible to the sides and below the module (at least 0.4 inches on each side) for best performance DS70005173A-page 6 0.4” 0.4” Advance Information  2014 Microchip Technology Inc.
PAGE 6
MRF24J40MD/ME 1.4 Operation The MRF24J40MD/ME module is based on the Microchip Technology MRF24J40 2.4 GHz IEEE 802.15.4 RF Transceiver IC. Serial communication and configuration are documented in the “MRF24J40 Data Sheet” (DS39776). This section emphasizes operational settings that are unique to the MRF24J40MD/ME module design that must be followed for proper operation. 1.4.1 pins on the MRF24J40. Figure 1-6 shows the PA/LNA block diagram. Figure 2-5 is the schematic diagram for the module.
PAGE 7
MRF24J40MD/ME 1.4.2 ENERGY DETECTION (ED) 1.4.3 SLEEP Before performing an energy detection (see Section 3.6.1 “RSSI Firmware Request (RSSI Mode 1)” in the “MRF24J40 Data Sheet” (DS39776), perform the following steps: To get the lowest power consumption from the MRF24J40MD/ME module during Sleep, it is necessary to disable the PA, PA voltage regulator and LNA. To do this, perform the following steps: 1. 1. 2. 3. 4.