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Microchip Technology ATMEGA2564RFR2-ZFR
- Part No.:
- ATMEGA2564RFR2-ZFR
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ATMEGA2564RFR2-ZFR.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,627
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Product details
Overview
ATMEGA2564RFR2-ZFR from Microchip (formerly Atmel) is a monolithic 8-bit AVR microcontroller integrated with a fully compliant IEEE 802.15.4-2011/2006/2003 and ZigBee-ready 2.4 GHz transceiver. It delivers 256 KB Flash, 32 KB SRAM, 8 KB EEPROM, -100 dBm RX sensitivity, and up to +3.5 dBm TX output power in a 48-pin QFN package. It targets low-power wireless sensor networks requiring embedded MAC acceleration and hardware AES encryption.
For engineers reviewing the ATMEGA2564RFR2-ZFR datasheet, ATMEGA2564RFR2-ZFR pinout, ATMEGA2564RFR2-ZFR application, or ATMEGA2564RFR2-ZFR equivalent, key selection criteria include integrated transceiver compliance with IEEE 802.15.4 PHY/MAC, hardware-assisted PAN filtering, 33 programmable I/O lines, deep-sleep current <700 nA, and support for 250 kb/s–2 Mb/s data rates in the 2.4 GHz ISM band.
Technical Context
The ATMEGA2564RFR2-ZFR integrates an enhanced RISC CPU with a full-featured 2.4 GHz DSSS transceiver using fractional-N PLL synthesis, on-chip 32.768 kHz and 16 MHz oscillators (external crystal required), and hardware-accelerated IEEE 802.15.4 frame handling including auto-acknowledge, auto-retry, CRC-16, and 32-bit symbol counter. Its dual-voltage architecture separates analog (EVDD/AVSS_RFP/RFN/RFP) and digital (DEVDD/DVSS) supply domains to minimize RF coupling.
It implements six software-selectable power modes-including Deep Sleep (<700 nA), RX_ON (6.0 mA), and BUSY_TX (18.6 mA at 3.6 V)-with independent clock gating for MCU core, transceiver, and peripherals. The transceiver supports antenna diversity control, 128-byte TX/RX frame buffers, and side-lobe-suppressed high-power amplifier operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | AVR 8-bit RISC with 135 instructions; most execute in one cycle; 16 MIPS @ 16 MHz, 1.8 V |
| Flash / EEPROM / SRAM | 256 KB ISP Flash (10k write/erase cycles), 8 KB EEPROM (20k cycles), 32 KB SRAM |
| Transceiver Data Rates | 250 kb/s, 500 kb/s, 1 Mb/s, and 2 Mb/s-hardware-configurable per IEEE 802.15.4 standard |
| RX Sensitivity / TX Power | -100 dBm @ 250 kb/s; +3.5 dBm maximum output-enables robust link budget in mesh networks |
| Supply Current (Deep Sleep) | <700 nA @ 25°C with watchdog, MAC symbol counter, and 32.768 kHz oscillator active |
| Operating Voltage Range | 1.8 V to 3.6 V-supports single-cell Li-ion/LiFePO₄ and dual-cell alkaline battery systems |
| Temperature Range | -40°C to +125°C industrial grade-qualified for harsh environmental deployment |
| Security Features | Hardware AES-128 engine and true random number generator-enables secure over-the-air updates and device authentication |
Pinout & Package
ATMEGA2564RFR2-ZFR uses a 48-pad, 7×7 mm RoHS-compliant QFN package with exposed thermal pad internally connected to AVSS. The center pad must be soldered to PCB ground for mechanical stability and thermal performance; leaving it unconnected risks delamination.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFP / RFN | Differential RF I/O terminals | 100 Ω differential interface requiring balun conversion to 50 Ω single-ended antenna path |
| AVSS_RFP / AVSS_RFN | Dedicated RF ground returns | Isolated analog grounds prevent digital noise coupling into sensitive RF receive path |
| XTAL1 / XTAL2 | 16 MHz crystal oscillator inputs | Drive external 16 MHz fundamental-mode crystal for transceiver reference clock; routing must avoid digital crosstalk |
| PG3 / PG4 | 32.768 kHz crystal oscillator pins | Connect low-power watch crystal for asynchronous timer and IEEE 802.15.4 symbol counter; total shunt capacitance ≤15 pF |
| TST / CLKI | Test mode enable / clock input | TST must be tied to AVSS if unused; CLKI must be tied to DVSS if not used as external clock source |
| PE0 / PE1 | USART0 RXD0 / TXD0 | Primary debug and host interface; supports bootloader programming and serial diagnostics |
| PD0 / PD1 | Two-wire Serial Interface (TWI) | Standard I²C-compatible interface for connecting sensors, EEPROMs, or PMICs without additional level shifters |
Key Features
| Feature | Design Value |
|---|---|
| Hardware-assisted IEEE 802.15.4 MAC | Offloads frame validation, ACK generation, retry logic, and CRC-16 computation from CPU-reducing latency and firmware overhead |
| Multiple PAN Address Filtering | Enables concurrent participation in up to 8 distinct personal area networks without CPU intervention-ideal for multi-network gateways |
| Integrated AES-128 Engine | Performs encryption/decryption in <1 µs per block-supports secure ZigBee Pro stack and encrypted sensor payloads |
| 33 Programmable I/O Lines | Includes 7-channel 10-bit ADC with differential gain options, two USARTs, SPI, TWI, and 6 flexible timers-eliminates need for companion ICs |
| Ultra-low Deep Sleep Current | <700 nA enables >10-year battery life in coin-cell-powered end nodes using scheduled wake-up via 32.768 kHz oscillator |
| On-chip Voltage Regulation | Dual internal LDOs generate stable AVDD and DVDD from single 1.8–3.6 V supply-reduces external BOM count and layout complexity |
Applications
| ZigBee Network Coordinator | Industrial Wireless Sensor Node |
|---|---|
Use Scenario: Central node managing large-scale mesh networks of temperature, humidity, and occupancy sensors in smart buildings. IC Role / Device Role / Timing Role: Full Function Device (FFD) executing ZigBee Pro stack, maintaining neighbor tables, routing packets, and synchronizing network time via 32-bit MAC symbol counter. Use Value: Hardware MAC acceleration and 256 KB Flash enable reliable coordination of >100 nodes with minimal firmware footprint and deterministic timing. | Use Scenario: Battery-powered vibration and temperature monitor mounted on rotating machinery in predictive maintenance systems. IC Role / Device Role / Timing Role: Reduced Function Device (RFD) collecting sensor data, performing local threshold detection, and transmitting alerts via IEEE 802.15.4 beacon-enabled mode. Use Value: Deep sleep current <700 nA and integrated 32.768 kHz oscillator allow 7+ years of operation on a single CR2032 cell with periodic wake-ups every 30 seconds. |
| Smart Energy Metering Endpoint | Wireless Home Automation Hub |
Use Scenario: ANSI C12.22-compliant endpoint communicating metering data to utility concentrators via RF4CE or IPv6/6LoWPAN stacks. IC Role / Device Role / Timing Role: Secure data acquisition node with hardware AES encryption, true RNG for key generation, and tamper-detection GPIO monitoring. Use Value: On-chip AES-128 and secure boot ensure cryptographic integrity of energy usage reports-meeting NIST IR 7976 and DLMS/COSEM requirements. | Use Scenario: Multi-protocol hub bridging ZigBee, RF4CE, and proprietary 2.4 GHz remotes in residential HVAC and lighting control systems. IC Role / Device Role / Timing Role: Dual-role transceiver supporting concurrent IEEE 802.15.4 and RF4CE physical layers with shared MAC layer resources. Use Value: Single-chip integration eliminates discrete transceiver + MCU pairing-reducing bill-of-materials cost by 35% and PCB area by 40%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATMEGA1284RFR2-ZUR | 128 KB Flash, 16 KB SRAM, 4 KB EEPROM-same QFN48 package and pinout | Targeted for mid-tier routers and repeaters; lacks memory headroom for full ZigBee Pro coordinator stacks | Select when application firmware size is <100 KB and cost optimization is prioritized over future stack scalability |
| CC2652R1F | ARM Cortex-M4F core, 352 KB Flash, Bluetooth 5.1 + IEEE 802.15.4 dual-mode radio, different pinout and voltage range (1.8–3.8 V) | Supports Bluetooth Mesh and Thread alongside ZigBee; requires revised PCB layout and driver migration | Select when multi-protocol interoperability or higher computational throughput (>48 MHz) is required |
Compared with ATMEGA2564RFR2-ZFR, the ATMEGA1284RFR2-ZUR offers identical RF performance and package compatibility but reduced memory for simpler network roles, while the CC2652R1F provides broader protocol support and higher processing capability at the cost of redesign effort and non-drop-in replacement.
Availability
ATMEGA2564RFR2-ZFR is available at Aetrix Electronics and suitable for ZigBee Pro coordinators, industrial wireless sensor nodes, and smart energy metering endpoints requiring stable component supply across extended product lifecycles.
Supply support for ATMEGA2564RFR2-ZFR 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.
The ATMEGA2564RFR2-ZFR belongs to the Atmel® AVR® RFR2 family, designed specifically for ultra-low-power, standards-compliant 2.4 GHz wireless embedded applications where integrated transceiver reliability and long battery life are critical.
FAQ
What is the maximum transmit output power of the ATMEGA2564RFR2-ZFR?
The ATMEGA2564RFR2-ZFR achieves up to +3.5 dBm TX output power in the 2.4 GHz ISM band. This value is measured under typical conditions at 3.6 V supply and represents the highest configurable setting supported by its integrated high-power amplifier. Actual radiated power depends on antenna matching and PCB layout; the device includes hardware-assisted TX spectrum side-lobe suppression to maintain spectral mask compliance.
Does the ATMEGA2564RFR2-ZFR require external crystals?
Yes, the ATMEGA2564RFR2-ZFR requires two external crystals: a 16 MHz fundamental-mode crystal connected to XTAL1/XTAL2 for the transceiver reference clock, and a 32.768 kHz watch crystal connected to PG3/PG4 for the asynchronous timer and IEEE 802.15.4 symbol counter. Both crystals must be placed close to their respective pins with minimal trace length and no adjacent digital signals to ensure frequency stability and low jitter.
How many ADC channels are available on the ATMEGA2564RFR2-ZFR?
The ATMEGA2564RFR2-ZFR provides seven single-ended ADC input channels (ADC0–ADC7, excluding ADC3/4 multiplexed on PF3/PF4). It features a 10-bit successive approximation ADC with 330 ks/s sampling rate, optional differential input stage, and programmable gain. The AREF pin is not exposed in the QFN48 package, so AVDD serves as the default reference voltage.
What power modes does the ATMEGA2564RFR2-ZFR support?
The ATMEGA2564RFR2-ZFR supports six software-selectable power modes: Idle, Power-down, Power-save, ADC Noise Reduction, Standby, and Extended Standby. Deep Sleep mode draws <700 nA at 25°C with watchdog timer, MAC symbol counter, and 32.768 kHz oscillator active-enabling decade-long battery life in intermittently active sensor nodes.
Is the ATMEGA2564RFR2-ZFR pin-compatible with other RFR2 devices?
Yes, the ATMEGA2564RFR2-ZFR shares identical QFN48 pinout and package dimensions with ATMEGA1284RFR2-ZUR and ATMEGA644RFR2-ZUR. All three devices have 33 programmable I/O lines, same RF pin assignments (RFP/RFN/AVSS_RFP/AVSS_RFN), and compatible power and crystal connections-allowing hardware reuse across memory-tier variants during design scaling.
ATMEGA2564RFR2-ZFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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:
- 256kB Flash, 8kB EEPROM, 32kB 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)
ATMEGA2564RFR2-ZFR FAQ
1.How can I place an order for ATMEGA2564RFR2-ZFR through Aetrix?
Please submit a Request for Quotation (RFQ) for ATMEGA2564RFR2-ZFR 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 ATMEGA2564RFR2-ZFR reliable?
The price and inventory of ATMEGA2564RFR2-ZFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATMEGA2564RFR2-ZFR is usually 5 days.
3.What payment methods are accepted for ATMEGA2564RFR2-ZFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATMEGA2564RFR2-ZFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATMEGA2564RFR2-ZFR?
ATMEGA2564RFR2-ZFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATMEGA2564RFR2-ZFR 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 ATMEGA2564RFR2-ZFR?
For technical support, including ATMEGA2564RFR2-ZFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATMEGA2564RFR2-ZFR requirements.
6.How does Aetrix verify that ATMEGA2564RFR2-ZFR is sourced from the original manufacturer or authorized distributors?
All ATMEGA2564RFR2-ZFR 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 ATMEGA2564RFR2-ZFR meets industry standards.
7.What is the process for return or replacement of ATMEGA2564RFR2-ZFR?
All ATMEGA2564RFR2-ZFR units undergo pre-shipment inspection (PSI). If there is an issue with ATMEGA2564RFR2-ZFR, 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 ATMEGA2564RFR2-ZFR part is unused and in its original packaging.
Return procedure for ATMEGA2564RFR2-ZFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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