MRF24J40MAT-I/RM

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MRF24J40MAT-I/RM

RX TXRX MOD 802.15.4 TRC ANT SMD

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Spezifikationen

Supplier Microchip Technology
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
RFFamily/Standard 802.15.4
Protocol Zigbee®
Frequency 2.4GHz
DataRate 250kbps
Power-Output 0dBm
Sensitivity -94dBm
SerialInterfaces SPI
AntennaType Integrated, Trace
Voltage-Supply 2.4V ~ 3.6V
Current-Receiving 19mA
Current-Transmitting 23mA
MountingType Surface Mount
OperatingTemperature -40°C ~ 85°C

Übersicht

Description

MRF24J40MAT-I/RM is Microchip’s 2.4 GHz IEEE 802.15.4 radio transceiver. It provides the RF front end and PHY for 802.15.4-based networks (e.g., ZigBee, MiWi) and is designed to pair with a host MCU via SPI.
Key points:
- 2.4 GHz ISM band, 250 kbps data rate, DSSS/O-QPSK modulation
- SPI interface (SCK, SI, SO, CS) plus interrupt lines; supports hardware CRC and frame handling
- Host MCU handles higher-layer MAC with Microchip stacks (MiWi, ZigBee) or your own 802.15.4 MAC
- Power: typically 3.3 V; variants like -I indicate industrial temperature range; -RM denotes RoHS/compliant packaging
- Useful for wireless sensor networks, home/industrial automation, remote monitoring
Getting started:
- Connect to MCU over SPI, provide 3.3 V, handle IRQs
- Use Microchip’s example code/stacks to configure channel, PAN ID, addresses, and network parameters
- Integrate with your application layer to form a network
Note: It is a transceiver module, not a full MCU or network stack by itself.

Features

Key features of MRF24J40MAT-I/RM (IEEE 802.15.4 2.4 GHz transceiver with MAC/PHY):
- IEEE 802.15.4 compliant PHY/MAC at 2.4 GHz, 250 kbps O-QPSK with DSSS
- Integrated RF front-end: power amplifier, LNA, mixer, and PLL synthesizer (no external RF parts required)
- 16 channels in the 2.4 GHz band (channels 11–26)
- Hardware CSMA/CA, auto-ACK, frame filtering, and CRC-16 for IEEE 802.15.4 framing
- SPI interface to host MCU (3.3V logic); IRQ/interrupt support
- Power options: single-supply 1.8–3.6V; supports low-power sleep modes
- Suitable for ZigBee, Smart Energy, 6LoWPAN, and other 802.15.4-based applications
- Package MAT-I/RM is a surface-mount/molded package variant (compact module form)
Note: For exact supply current, voltage ranges, and pinout, refer to the latest datasheet.

Package

Package type: QFN (Quad Flat No-Lead), 28-pin, 4×4 mm, RoHS-compliant (MAT-I/RM variant).

Pinout

Pin count: 32 pins.
Primary pin functions (summary):
- Power/Ground: VDD (power), VSS (ground), VREG_EN/AVDD pins for on‑chip regulator and analog supply.
- RF/antenna: RF I/O (antenna/50Ω interface).
- SPI host interface: SDI/MOSI, SDO/MISO, SCK, CS/SS for MCU communication.
- Control/status: RESET, IRQ (interrupt output), SLP/WAKE (sleep control).
- GPIOs: several general-purpose I/O pins usable for LEDs/buttons or peripheral signaling.
- Clock/XTAL: pins for an external 32 MHz crystal or clock input (or internal oscillator selection).
- Misc/test: configuration/strapping and reserved/test pins for factory/debug.
These map to the IEEE 802.15.4 2.4 GHz transceiver functions: RF front end, MAC/PHY controller, SPI host interface, power management and GPIOs. For a full pin-by-pin table see the device datasheet.

Manufacturer

- Manufacturer: Microchip Technology Inc.
- What kind of company: An American multinational semiconductor company that designs, develops, and manufactures microcontrollers, memory, analog and wireless semiconductor products (including 802.15.4 transceivers like MRF24J40).

Application

Applications:
- Low-power wireless sensor networks (industrial, commercial, consumer)
- Home/building automation (lighting, HVAC, security, energy management)
- Smart metering and energy monitoring
- Remote monitoring and telemetry
- Wireless MCU I/O links and peripherals
- ZigBee/IEEE 802.15.4 mesh/star networks (MiWi, ZigBee, Thread with appropriate stacks)
- Education and prototyping for IoT projects

Equivalent

Functional equivalents (IEEE 802.15.4, 2.4 GHz) to the Microchip MRF24J40MA include: Atmel/Microchip AT86RF233 / AT86RF230, TI CC2420 / CC2520 (and CC2530 SoC), NXP MC13224V, and Silicon Labs EM358x / EFR32MG series. Note: these are functionally similar; few are pin‑compatible drop‑ins.

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