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Microchip Technology ATMEGA1284RFR2-ZF
- Part No.:
- ATMEGA1284RFR2-ZF
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ATMEGA1284RFR2-ZF.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,227
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Product details
Overview
ATMEGA1284RFR2-ZF from Microchip Technology (formerly Atmel) is an 8-bit AVR microcontroller integrated with a 2.4 GHz IEEE 802.15.4/ZigBee transceiver in a single QFN-48 package. It delivers 128 KB Flash, 4 KB EEPROM, 16 KB SRAM, 33 programmable I/O lines, and operates from 1.8–3.6 V. It targets low-power wireless sensor nodes and mesh network routers requiring embedded processing and robust RF communication.
For engineers reviewing the ATMEGA1284RFR2-ZF datasheet, ATMEGA1284RFR2-ZF pinout, ATMEGA1284RFR2-ZF application, or ATMEGA1284RFR2-ZF equivalent, key selection criteria include its integrated transceiver performance (−100 dBm RX sensitivity, up to +3.5 dBm TX output), hardware-assisted MAC, AES security engine, and ultra-low deep-sleep current (<700 nA).
Technical Context
The ATMEGA1284RFR2-ZF combines an enhanced RISC CPU executing 135 instructions-most in one cycle-with a fully integrated 2.4 GHz DSSS transceiver supporting 250 kb/s to 2 Mb/s data rates. Its architecture includes a fractional-N PLL synthesizer with 5 MHz/500 kHz channel spacing and hardware-accelerated IEEE 802.15.4 frame handling (SFD detection, CRC-16, auto-acknowledge, auto-retry).
It integrates dual crystal oscillators (16 MHz for RF timing, 32.768 kHz for low-power symbol counting and RTC), on-chip voltage regulation (AVDD/DVDD internally generated), and dedicated RF ground pins (AVSS_RFP/AVSS_RFN) to isolate analog/digital/RF domains. The device supports seven ADC input channels (10-bit, 330 ks/s) and six software-selectable power-save modes including Deep Sleep with <700 nA leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | AVR 8-bit RISC with 32 general-purpose registers and 2-cycle hardware multiplier |
| Flash / EEPROM / SRAM | 128 KB / 4 KB / 16 KB - enables full ZigBee stack + application firmware in one chip |
| RF Performance | −100 dBm RX sensitivity at 250 kb/s; +3.5 dBm max TX output - ensures reliable link budget in noisy ISM band |
| Supply Voltage Range | 1.8–3.6 V - supports coin-cell and Li-ion battery operation without external regulators |
| Deep Sleep Current | <700 nA @ 25°C - extends multi-year battery life in intermittent sensing applications |
| ADC Resolution & Speed | 10-bit, 330 ks/s with differential gain options - suitable for precision sensor interfacing |
| Transceiver Data Rates | 250 kb/s, 500 kb/s, 1 Mb/s, 2 Mb/s - configurable for latency vs. range trade-offs |
Pinout & Package
ATMEGA1284RFR2-ZF uses a 48-pad QFN package (7×7 mm, RoHS-compliant) with an exposed thermal pad internally connected to AVSS. The pad must be soldered to PCB ground for mechanical stability and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFP / RFN | Differential RF I/O port terminals | 100 Ω differential interface requiring balun for 50 Ω single-ended antenna connection |
| AVSS_RFP / AVSS_RFN | Dedicated RF analog ground pins | Isolate RF return path from digital/analog grounds to minimize coupling and phase noise |
| XTAL1 / XTAL2 | 16 MHz crystal oscillator inputs | Provide precise reference clock for RF PLL and transceiver timing; require low-parasitic layout |
| PG3 / PG4 | 32.768 kHz crystal oscillator inputs | Enable ultra-low-power real-time symbol counting and sleep-mode timing without waking CPU |
| PE0 / PE1 | USART0 RXD0 / TXD0 | Primary serial interface for host communication or bootloader; supports asynchronous framing |
| PD0 / PD1 | Two-wire (I²C) interface SCL / SDA | Connects to sensors or peripherals using standard SMBus-compatible protocol |
Key Features
| Feature | Design Value |
|---|---|
| Hardware-assisted IEEE 802.15.4 MAC | Offloads frame filtering, CRC-16, auto-ack, auto-retry, and 32-bit symbol counter from CPU |
| AES-128 encryption engine | Accelerates secure key exchange and payload encryption without CPU overhead or memory exposure |
| Multiple power-save modes | Deep Sleep (<700 nA), Power-save (asynchronous timer active), ADC Noise Reduction (low-noise sampling) |
| Integrated voltage regulation | On-chip AVDD/DVDD generation eliminates need for external LDOs, reducing BOM count |
| 33 GPIO with peripheral multiplexing | Supports simultaneous SPI, two USARTs, TWI, timers, and ADC while retaining flexible I/O mapping |
Applications
| ZigBee Router Node | Wireless Sensor Endpoint |
|---|---|
|
Use Scenario: A battery-powered smart home hub relays messages between end devices and coordinator using ZigBee mesh routing. IC Role / Device Role / Timing Role: Full Function Device (FFD) executing network layer stack, managing neighbor tables, and forwarding encrypted frames. Use Value: Integrated transceiver and 128 KB Flash eliminate external RF IC and external memory, reducing footprint and bill-of-materials cost. |
Use Scenario: Temperature/humidity sensor node in industrial HVAC system reports data every 5 minutes via 6LoWPAN over IEEE 802.15.4. IC Role / Device Role / Timing Role: Reduced Function Device (RFD) performing sensor acquisition, low-power sleep, and periodic beacon-aligned transmission. Use Value: Deep Sleep current <700 nA enables >5-year operation on CR2032; hardware MAC ensures deterministic transmit timing. |
| Industrial WirelessHART Node | RF4CE Remote Control |
|
Use Scenario: Pressure transmitter in oil & gas pipeline uses time-synchronized mesh to deliver diagnostics and process data with redundancy. IC Role / Device Role / Timing Role: WirelessHART field device implementing TDMA scheduling, channel hopping, and AES-128 secured packet forwarding. Use Value: Hardware AES engine and 32-bit symbol counter enable precise slot synchronization and cryptographically authenticated payloads. |
Use Scenario: Consumer IR-to-RF remote control transmits encrypted command packets to TV or set-top box using RF4CE profile. IC Role / Device Role / Timing Role: RF4CE endpoint managing pairing, secure key exchange, and low-latency unicast/broadcast transmission. Use Value: On-chip AES and hardware-assisted MAC reduce MCU firmware size and ensure sub-100 ms response time under interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit wireless microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATMEGA2564RFR2-ZF | 256 KB Flash, 32 KB SRAM, 8 KB EEPROM - larger memory for complex coordinator stacks | Targeted at network coordinators/routers requiring full ZigBee Pro support | Select when running full ZigBee stack with multiple endpoints and routing tables |
| ATMEGA644RFR2-ZF | 64 KB Flash, 8 KB SRAM, 2 KB EEPROM - reduced memory and lower current in active mode | Optimized for simple end-node devices with minimal firmware footprint | Select for cost-sensitive, low-complexity sensor nodes where memory headroom is limited |
Compared with ATMEGA1284RFR2-ZF, ATMEGA2564RFR2-ZF provides greater memory headroom for large routing tables and application logic, while ATMEGA644RFR2-ZF trades memory capacity for lower BOM cost and marginally lower active current - making ATMEGA1284RFR2-ZF the balanced choice for mid-tier routers and feature-rich endpoints.
Availability
ATMEGA1284RFR2-ZF is available at Aetrix Electronics and suitable for ZigBee mesh networking, industrial wireless sensor networks, and RF4CE remote control systems requiring stable component supply across production lifecycles.
Supply support for ATMEGA1284RFR2-ZF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology acquired Atmel in 2016 and maintains full support for the AVR wireless portfolio. The company specializes in microcontrollers, analog, and connectivity solutions for industrial, automotive, and IoT markets.
ATMEGA1284RFR2-ZF belongs to the Atmel® RFR2 family of integrated wireless MCUs designed specifically for standards-based low-power wireless applications including ZigBee, 6LoWPAN, WirelessHART, and RF4CE.
FAQ
What is the maximum transmit output power of the ATMEGA1284RFR2-ZF transceiver?
The ATMEGA1284RFR2-ZF transceiver delivers up to +3.5 dBm output power in the 2.4 GHz ISM band. This value is achieved under specified conditions (3.6 V supply, optimized matching network) and enables robust link budgets in typical indoor environments. The actual output level is programmable via register settings and depends on antenna matching and PCB layout integrity.
Does the ATMEGA1284RFR2-ZF support hardware AES encryption?
Yes, the ATMEGA1284RFR2-ZF includes a dedicated hardware AES-128 encryption engine that operates independently of the CPU. This allows secure frame encryption and decryption without consuming CPU cycles or exposing keys in RAM - a critical capability for ZigBee, WirelessHART, and RF4CE implementations requiring end-to-end security.
What crystal frequencies are required for the ATMEGA1284RFR2-ZF?
The ATMEGA1284RFR2-ZF requires two crystals: a 16 MHz fundamental-mode crystal on XTAL1/XTAL2 for RF timing and PLL reference, and a 32.768 kHz tuning-fork crystal on PG3/PG4 for low-power symbol counting and RTC functions. Both crystals must meet load capacitance specifications (typically 12 pF for 16 MHz; 12–25 pF for 32.768 kHz) and be placed close to their respective pins.
How many ADC input channels does the ATMEGA1284RFR2-ZF support?
The ATMEGA1284RFR2-ZF supports seven single-ended ADC input channels (PF0–PF5, PF7) with 10-bit resolution and up to 330 ks/s sampling rate. Port F3 and F4 share a physical pin, limiting total distinct analog inputs to seven. The ADC includes optional differential input with programmable gain, enabling direct sensor interfacing without external signal conditioning.
What is the deep sleep current consumption of the ATMEGA1284RFR2-ZF?
The ATMEGA1284RFR2-ZF achieves less than 700 nA deep sleep current at 25°C when configured with watchdog timer disabled and only the 32.768 kHz oscillator and MAC symbol counter active. This ultra-low leakage enables multi-year battery life in intermittently active sensor nodes - a key design advantage over discrete MCU + transceiver solutions.
ATMEGA1284RFR2-ZF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- 802.15.4
- Protocol:
- Zigbee®
- Modulation:
- O-QPSK
- Frequency:
- 2.4GHz
- Data Rate (Max):
- 2Mbps
- Power - Output:
- 3.5dBm
- Sensitivity:
- -100dBm
- Memory Size:
- 128kB Flash, 4kB EEPROM, 16kB SRAM
- Serial Interfaces:
- I2C, JTAG, SPI, USART
- GPIO:
- 32
- Voltage - Supply:
- 1.8V ~ 3.6V
- Current - Receiving:
- 5mA ~ 12.5mA
- Current - Transmitting:
- 8mA ~ 14.5mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-QFN (7x7)
ATMEGA1284RFR2-ZF FAQ
1.How can I place an order for ATMEGA1284RFR2-ZF through Aetrix?
Please submit a Request for Quotation (RFQ) for ATMEGA1284RFR2-ZF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ATMEGA1284RFR2-ZF reliable?
The price and inventory of ATMEGA1284RFR2-ZF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATMEGA1284RFR2-ZF is usually 5 days.
3.What payment methods are accepted for ATMEGA1284RFR2-ZF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATMEGA1284RFR2-ZF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATMEGA1284RFR2-ZF?
ATMEGA1284RFR2-ZF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATMEGA1284RFR2-ZF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ATMEGA1284RFR2-ZF?
For technical support, including ATMEGA1284RFR2-ZF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATMEGA1284RFR2-ZF requirements.
6.How does Aetrix verify that ATMEGA1284RFR2-ZF is sourced from the original manufacturer or authorized distributors?
All ATMEGA1284RFR2-ZF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ATMEGA1284RFR2-ZF meets industry standards.
7.What is the process for return or replacement of ATMEGA1284RFR2-ZF?
All ATMEGA1284RFR2-ZF units undergo pre-shipment inspection (PSI). If there is an issue with ATMEGA1284RFR2-ZF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ATMEGA1284RFR2-ZF part is unused and in its original packaging.
Return procedure for ATMEGA1284RFR2-ZF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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