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Microchip Technology ATMEGA2564RFR2-ZUR
- Part No.:
- ATMEGA2564RFR2-ZUR
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ATMEGA2564RFR2-ZUR.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,919
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Product details
Overview
ATMEGA2564RFR2-ZUR from Microchip Technology (formerly Atmel) is an 8-bit AVR microcontroller with integrated 2.4 GHz IEEE 802.15.4/ZigBee transceiver in a 48-pin QFN package. It delivers 256 KB Flash, 32 KB SRAM, 8 KB EEPROM, -100 dBm RX sensitivity, and 3.5 dBm TX output power. It operates from 1.8–3.6 V and supports ultra-low-power Deep Sleep mode (<700 nA @ 25°C), enabling battery-powered mesh network coordinators.
For engineers reviewing the ATMEGA2564RFR2-ZUR datasheet, ATMEGA2564RFR2-ZUR pinout, ATMEGA2564RFR2-ZUR application, or ATMEGA2564RFR2-ZUR equivalent, key selection criteria include integrated MAC hardware acceleration, 33 programmable I/O lines, 2.4 GHz transceiver data rates up to 2 Mb/s, AES-128 security engine, and support for ZigBee Pro coordinator functionality in industrial wireless sensor networks.
Technical Context
The ATMEGA2564RFR2-ZUR integrates a high-performance AVR RISC core with a fully featured 2.4 GHz transceiver on a single die. Its architecture includes hardware-assisted IEEE 802.15.4 MAC (auto-acknowledge, auto-retry, 32-bit symbol counter), fractional-N PLL synthesizer with 5 MHz/500 kHz channel spacing, and dedicated RF I/O pins (RFP/RFN) with separate analog grounds (AVSS_RFP/AVSS_RFN).
It features dual crystal oscillators - 16 MHz for transceiver timing and 32.768 kHz for low-power RTC and MAC symbol counting - alongside internal voltage regulation (DVDD/AVDD), JTAG debug interface, and seven ADC input channels (10-bit, 330 ks/s). All digital I/O ports support configurable pull-ups and multiple peripheral functions including two USARTs, SPI, TWI, six timers, and hardware AES encryption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | AVR 8-bit RISC with 135 instructions; most execute in one cycle for 16 MIPS @ 16 MHz |
| Flash / EEPROM / SRAM | 256 KB Flash (read-while-write), 8 KB EEPROM (20k cycles @ 125°C), 32 KB SRAM |
| Transceiver Performance | -100 dBm RX sensitivity; +3.5 dBm max TX output; 250 kb/s to 2 Mb/s data rates |
| Power Consumption | CPU Active @ 16 MHz: 4.1 mA; RX_ON: 6.0 mA; TX (max power): 14.5 mA; Deep Sleep: <700 nA |
| Supply Voltage Range | 1.8–3.6 V with integrated regulators; supports operation down to 1.8 V at full 16 MHz speed |
| Operating Temperature | -40°C to +125°C industrial grade; qualified for extended ambient and junction conditions |
| ADC & Timing | 10-bit, 330 ks/s SAR ADC with 7 single-ended channels; 32-bit IEEE 802.15.4 symbol counter with 32.768 kHz oscillator |
Pinout & Package
ATMEGA2564RFR2-ZUR 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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFP / RFN | Differential RF I/O port | Direct connection to 100 Ω differential antenna interface; requires external balun for 50 Ω single-ended systems |
| AVSS_RFP / AVSS_RFN | Dedicated RF analog grounds | Isolated ground return paths minimize coupling between digital noise and RF front-end |
| XTAL1 / XTAL2 | 16 MHz crystal oscillator inputs | Drive external 16 MHz crystal for transceiver reference clock; routing must avoid digital crosstalk |
| PG3 / PG4 | 32.768 kHz crystal oscillator pins | Connect external 32.768 kHz crystal for low-power RTC and MAC symbol counter; layout critical for sub-µA operation |
| PE0 / PE1 | USART0 RXD0 / TXD0 | Primary serial interface for host communication or bootloader; supports asynchronous framing and baud rate generation |
| PD0 / PD1 | Two-wire Serial Interface (TWI) | Compatible with I²C protocol; used for sensor interfacing or configuration of external peripherals |
Key Features
| Feature | Design Value |
|---|---|
| Hardware-assisted IEEE 802.15.4 MAC | Offloads frame filtering, auto-ACK, auto-retry, CRC-16, and SFD detection from CPU - reduces latency and firmware overhead |
| Integrated AES-128 engine | Accelerates encryption/decryption for ZigBee security layers without consuming CPU cycles or SRAM |
| Multiple ultra-low-power sleep modes | Deep Sleep mode draws <700 nA while retaining MAC symbol counter and 32.768 kHz oscillator - enables multi-year battery life |
| Dual crystal oscillator support | Separate 16 MHz (transceiver) and 32.768 kHz (low-power timing) crystals enable precise RF timing and accurate timekeeping during sleep |
| 33 programmable I/O lines | Includes 7-channel 10-bit ADC, two USARTs, SPI, TWI, six timers, and JTAG - sufficient for complex sensor node or coordinator designs |
Applications
| ZigBee Pro Coordinator | Industrial Wireless Sensor Node |
|---|---|
Use Scenario: Central hub managing large-scale ZigBee mesh networks in smart building automation or factory monitoring. IC Role / Device Role / Timing Role: Full Function Device (FFD) executing network formation, routing, security key management, and time-synchronized polling using 32-bit MAC symbol counter. Use Value: 256 KB Flash stores full ZigBee Pro stack; hardware MAC and AES accelerate secure frame processing; -100 dBm sensitivity extends range in noisy industrial environments. | Use Scenario: Battery-powered temperature/humidity sensor deployed in HVAC ducts or machinery enclosures. IC Role / Device Role / Timing Role: Reduced Function Device (RFD) performing periodic sampling, encrypted transmission, and deep sleep between intervals using 32.768 kHz oscillator. Use Value: <700 nA Deep Sleep current enables >10-year operation on coin cell; integrated transceiver eliminates external RF IC BOM cost and layout complexity. |
| 6LoWPAN Edge Router | Wireless HART Field Device |
Use Scenario: IPv6-capable edge gateway bridging IEEE 802.15.4 sensor networks to Ethernet/IP infrastructure. IC Role / Device Role / Timing Role: Network processor handling 6LoWPAN header compression, fragmentation, and neighbor discovery with real-time packet scheduling. Use Value: Dual USARTs enable concurrent serial debug and IP tunneling; 32 KB SRAM buffers fragmented IPv6 packets; hardware CRC ensures link-layer integrity. | Use Scenario: Process instrumentation device (e.g., pressure transmitter) requiring deterministic, time-synchronized wireless communication in hazardous areas. IC Role / Device Role / Timing Role: Time-slotted channel-hopping radio node implementing WirelessHART MAC layer with guaranteed slot allocation and redundancy. Use Value: Hardware symbol counter and precise 16 MHz reference enable ±10 ppm timing accuracy required for TDMA synchronization; industrial temp range (-40°C to +125°C) ensures reliability in extreme environments. |
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 |
|---|---|---|---|
| ATMEGA1284RFR2-ZUR | 128 KB Flash, 16 KB SRAM, 4 KB EEPROM; identical QFN48 package and pinout | Targeted for mid-tier routers or gateways with reduced memory footprint requirements | Select when ZigBee stack size and application code fit within 128 KB Flash and lower SRAM suffices for buffer needs |
| ATMEGA644RFR2-ZUR | 64 KB Flash, 8 KB SRAM, 2 KB EEPROM; same RF transceiver and peripheral set | Optimized for end-node devices with minimal local processing and small firmware images | Choose for simple sensor endpoints where full 256 KB Flash is unnecessary and BOM cost reduction is prioritized |
Compared with ATMEGA1284RFR2-ZUR and ATMEGA644RFR2-ZUR, the ATMEGA2564RFR2-ZUR provides double the Flash and SRAM of the 1284 variant and quadruple that of the 644 variant - enabling larger protocol stacks, over-the-air updates, and local data buffering in resource-constrained wireless coordinator roles.
Availability
ATMEGA2564RFR2-ZUR is available at Aetrix Electronics and suitable for ZigBee Pro coordinator nodes, industrial wireless sensor networks, and 6LoWPAN edge routers requiring stable component supply across long-lifecycle embedded deployments.
Supply support for ATMEGA2564RFR2-ZUR 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 now manufactures and supports the ATMEGA2564RFR2-ZUR family. The company specializes in microcontrollers, analog, FPGA, and connectivity solutions for industrial, automotive, and IoT markets.
The ATmega RFR2 product line was designed specifically for standards-based 2.4 GHz wireless embedded applications - integrating robust RF performance, ultra-low-power operation, and full-stack programmability into a single monolithic IC for ZigBee, 6LoWPAN, and WirelessHART systems.
FAQ
What is the maximum transmit output power of the ATMEGA2564RFR2-ZUR?
The ATMEGA2564RFR2-ZUR achieves a maximum transmit output power of +3.5 dBm. This value is measured under standard test conditions with the internal PA enabled and represents the highest RF power level supported by the integrated transceiver. It enables reliable communication over extended distances in typical indoor and light industrial environments without requiring external power amplification.
Does the ATMEGA2564RFR2-ZUR require external crystals?
Yes, the ATMEGA2564RFR2-ZUR requires two external crystals: a 16 MHz crystal connected to XTAL1/XTAL2 for transceiver timing and a 32.768 kHz crystal connected to PG3/PG4 for low-power RTC and IEEE 802.15.4 symbol counting. Neither oscillator is usable without its respective crystal; internal RC oscillators do not meet the frequency stability requirements for compliant 2.4 GHz operation or MAC timing.
How many ADC input channels does the ATMEGA2564RFR2-ZUR support?
The ATMEGA2564RFR2-ZUR supports seven single-ended ADC input channels (PF0–PF5, PF7). Although the underlying ADC module is 8-channel, Port F3 and F4 share a single pin in the QFN48 package, reducing the number of distinct analog inputs to seven. The ADC operates at up to 330 ks/s with 10-bit resolution and includes an optional differential input stage with programmable gain.
Is the ATMEGA2564RFR2-ZUR pin-compatible with other RFR2 variants?
Yes, the ATMEGA2564RFR2-ZUR is pin-compatible with ATMEGA1284RFR2-ZUR and ATMEGA644RFR2-ZUR in the QFN48 package. All three share identical pin assignments, electrical characteristics, and RF interface layout. This allows hardware reuse across different memory configurations - enabling scalable design from endpoint to coordinator using the same PCB footprint and schematic.
What sleep modes are available on the ATMEGA2564RFR2-ZUR and their typical current draw?
The ATMEGA2564RFR2-ZUR offers six software-selectable power-saving modes. Deep Sleep draws <700 nA @ 25°C with MAC symbol counter and 32.768 kHz oscillator active. Power-down consumes ~250 nA with only WDT running. RX_ON draws 6.0 mA; BUSY_TX draws up to 18.6 mA (including MCU and transceiver); CPU Active @ 16 MHz draws 4.1 mA. All values scale with supply voltage (1.8–3.6 V).
ATMEGA2564RFR2-ZUR 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-QFN (7x7)
ATMEGA2564RFR2-ZUR FAQ
1.How can I place an order for ATMEGA2564RFR2-ZUR through Aetrix?
Please submit a Request for Quotation (RFQ) for ATMEGA2564RFR2-ZUR 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-ZUR reliable?
The price and inventory of ATMEGA2564RFR2-ZUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATMEGA2564RFR2-ZUR is usually 5 days.
3.What payment methods are accepted for ATMEGA2564RFR2-ZUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATMEGA2564RFR2-ZUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATMEGA2564RFR2-ZUR?
ATMEGA2564RFR2-ZUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATMEGA2564RFR2-ZUR 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-ZUR?
For technical support, including ATMEGA2564RFR2-ZUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATMEGA2564RFR2-ZUR requirements.
6.How does Aetrix verify that ATMEGA2564RFR2-ZUR is sourced from the original manufacturer or authorized distributors?
All ATMEGA2564RFR2-ZUR 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-ZUR meets industry standards.
7.What is the process for return or replacement of ATMEGA2564RFR2-ZUR?
All ATMEGA2564RFR2-ZUR units undergo pre-shipment inspection (PSI). If there is an issue with ATMEGA2564RFR2-ZUR, 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-ZUR part is unused and in its original packaging.
Return procedure for ATMEGA2564RFR2-ZUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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