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Microchip Technology ATMEGA2564RFR2-ZF
- Part No.:
- ATMEGA2564RFR2-ZF
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ATMEGA2564RFR2-ZF.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,640
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Product details
Overview
ATMEGA2564RFR2-ZF from Microchip Technology (formerly Atmel) is an 8-bit AVR microcontroller with integrated 2.4 GHz IEEE 802.15.4/ZigBee transceiver, 256 KB Flash, 32 KB SRAM, and 8 KB EEPROM. It operates from 1.8–3.6 V, supports 250 kb/s–2 Mb/s data rates, and delivers −100 dBm RX sensitivity with up to +3.5 dBm TX output power. It targets low-power wireless sensor networks and mesh routing nodes.
For engineers reviewing the ATMEGA2564RFR2-ZF datasheet, ATMEGA2564RFR2-ZF pinout, ATMEGA2564RFR2-ZF application, or ATMEGA2564RFR2-ZF equivalent, key selection criteria include integrated MAC acceleration, hardware AES encryption, 33 GPIOs in QFN-48, deep-sleep current <700 nA, and dual crystal support (16 MHz + 32.768 kHz).
Technical Context
The ATMEGA2564RFR2-ZF integrates a high-efficiency 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, CRC-16 engine, and DSSS spreading/despreading - all operating independently of the CPU.
It features dual regulated supply domains (DVDD/AVDD internally generated from DEVDD/EVDD), dedicated RF ground pins (AVSS_RFP/AVSS_RFN), and separate 16 MHz (transceiver clock) and 32.768 kHz (low-power timer/MAC counter) crystal interfaces. The transceiver supports four data rates (250/500 kb/s, 1/2 Mb/s) with configurable TX power and antenna diversity control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | AVR 8-bit RISC with 135 instructions; most execute in 1 cycle - enables deterministic real-time response and efficient code density. |
| Flash / EEPROM / SRAM | 256 KB Flash (10k write/erase cycles @125°C), 8 KB EEPROM (20k cycles @125°C), 32 KB SRAM - supports large ZigBee Pro stack and persistent network state storage. |
| RF Performance | −100 dBm RX sensitivity at 250 kb/s; +3.5 dBm max TX output; 250 kb/s–2 Mb/s data rates - ensures robust link budget in dense ISM band environments. |
| Power Consumption | CPU active (16 MHz): 4.1 mA; RX_ON: 6.0 mA; TX (max power): 14.5 mA; Deep Sleep: <700 nA - enables multi-year battery life in endpoint and coordinator roles. |
| Clock System | Dual-crystal support: 16 MHz for transceiver timing and CPU; 32.768 kHz for asynchronous timer and MAC symbol counter - eliminates need for external RTC or timing ICs. |
| Security & MAC | Hardware AES-128 engine and true random number generator; full hardware MAC offload including SFD detection, framing, and CRC-16 - reduces CPU load and improves protocol compliance. |
| I/O & Package | 33 programmable I/O lines; 48-pin QFN (7×7 mm, RoHS); dedicated differential RF port (RFP/RFN) with isolated analog grounds - simplifies RF layout and meets industrial EMI requirements. |
Pinout & Package
ATMEGA2564RFR2-ZF uses a 48-pin QFN package (7×7 mm, RoHS-compliant) with exposed thermal pad internally connected to AVSS. The package supports 33 GPIOs across Ports B, D, E, F, and G, plus dedicated RF (RFP/RFN), crystal (XTAL1/XTAL2), and power (EVDD/DEVDD/DVSS/AVSS) terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFP / RFN | Differential RF I/O port | 100 Ω differential interface for 2.4 GHz transceiver; requires balun for single-ended antenna connection. |
| AVSS_RFP / AVSS_RFN | Dedicated RF ground returns | Isolated analog ground paths minimize coupling between digital noise and RF front-end performance. |
| XTAL1 / XTAL2 | 16 MHz crystal oscillator inputs | Drive external 16 MHz crystal for transceiver PLL and CPU clock; critical for frequency accuracy and EMI control. |
| PG3 / PG4 | 32.768 kHz crystal inputs | Connect external 32.768 kHz crystal for low-power timer and IEEE 802.15.4 symbol counter - enables sub-µA sleep timing. |
| PE0 / PE1 | USART0 RXD0 / TXD0 | Primary serial interface for host communication or bootloader; supports asynchronous full-duplex at up to 2 Mbps. |
| PD0 / PD1 | Two-wire (I²C) interface | Supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C for sensor or peripheral interfacing. |
| PF0–PF2, PF5–PF7 | ADC input channels | 7 single-ended ADC inputs (10-bit, 330 ksps); internal temperature sensor and analog comparator available. |
| TST / CLKI | Test and clock input | TST enables programming/test mode; CLKI allows external clock source - both must be externally tied (TST→AVSS, CLKI→DVSS if unused). |
Key Features
| Feature | Design Value |
|---|---|
| Hardware IEEE 802.15.4 MAC | Full offload of frame handling, auto-ACK, auto-retry, SFD detection, and CRC-16 - frees CPU for application logic and reduces latency. |
| Integrated AES-128 Engine | Dedicated cryptographic accelerator with true random number generator - enables secure key exchange and payload encryption without software overhead. |
| Dual-Crystal Timing System | Independent 16 MHz (RF/CPU) and 32.768 kHz (low-power timer/MAC counter) oscillators - eliminates external timing components and supports precise duty-cycled operation. |
| Ultra-Low-Power Sleep Modes | Deep Sleep current <700 nA at 25°C with 32.768 kHz oscillator and MAC symbol counter active - extends battery life in intermittent transmit/receive applications. |
| RF Front-End Integration | On-chip PLL synthesizer with 5 MHz/500 kHz channel spacing, TX spectrum side-lobe suppression, and antenna diversity control - simplifies RF design and improves regulatory compliance. |
Applications
| Smart Utility Metering | ZigBee Pro Coordinator |
|---|---|
Use Scenario: Battery-powered gas/water meters transmitting consumption data hourly via mesh network to concentrator. IC Role / Device Role / Timing Role: Full-function node executing ZigBee SE 1.1 stack with hardware MAC and AES; uses 32.768 kHz oscillator for accurate time-stamped reporting. Use Value: <700 nA deep-sleep current enables >10-year battery life; integrated transceiver eliminates external RF IC and reduces BOM count by 4+ components. | Use Scenario: Central hub managing 100+ end devices in industrial building automation, routing traffic between subnets. IC Role / Device Role / Timing Role: Network coordinator with 256 KB Flash hosting full ZigBee Pro stack; leverages hardware symbol counter and dual UARTs for backhaul and device management. Use Value: Hardware MAC offload sustains 250 kb/s throughput across 50+ concurrent links; 32 KB SRAM accommodates large routing tables and security contexts. |
| Wireless Sensor Node | 6LoWPAN Edge Router |
Use Scenario: Temperature/humidity sensor node in cold-chain logistics, waking every 5 minutes to sample and transmit via star topology. IC Role / Device Role / Timing Role: Reduced-function device using hardware AES and ADC; relies on 32.768 kHz crystal for precise wake-up intervals and low-jitter sampling. Use Value: Integrated 10-bit ADC and temperature sensor eliminate external signal conditioning; <1 µA average current per transmission cycle extends shelf life. | Use Scenario: IPv6 gateway bridging IEEE 802.15.4 sensor network to Ethernet/Wi-Fi backbone in smart agriculture deployment. IC Role / Device Role / Timing Role: Dual-role device running 6LoWPAN adaptation layer and border router logic; uses USART1 for Ethernet controller interface and SPI for flash storage. Use Value: 256 KB Flash stores CoAP server, TLS stack, and firmware update image; hardware CRC-16 and AES accelerate packet processing at line rate. |
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 RF transceiver, QFN-48 pinout, and peripheral set. | Targeted for ZigBee routers with smaller stack footprint; lacks memory headroom for full ZigBee Pro coordinator with OTA updates. | Select when application fits within 128 KB Flash and requires identical RF performance at lower cost. |
| CC2652R1F | ARM Cortex-M4F core, 352 KB Flash, 80 KB RAM; proprietary BLE + IEEE 802.15.4 multiprotocol radio; different pinout and voltage range (1.8–3.8 V). | Supports concurrent BLE and ZigBee; higher compute throughput but larger code size and no direct AVR toolchain compatibility. | Select when multi-protocol support, larger memory, or ARM ecosystem integration outweighs AVR legacy code reuse needs. |
Compared with ATMEGA1284RFR2-ZUR, ATMEGA2564RFR2-ZF provides double Flash/SRAM for complex coordinator stacks and OTA resilience; versus CC2652R1F, it offers mature AVR tooling and deterministic real-time behavior but lacks BLE coexistence and advanced power management features like DCDC converter.
Availability
ATMEGA2564RFR2-ZF is available at Aetrix Electronics and suitable for smart metering, industrial sensor networks, building automation, and ZigBee Pro mesh routing requiring stable component supply across extended product lifecycles.
Supply support for ATMEGA2564RFR2-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, FPGA, and connectivity solutions for industrial, automotive, and IoT markets.
ATMEGA2564RFR2-ZF belongs to the Atmel® AVR® RFR2 family, designed specifically for ultra-low-power, standards-compliant 2.4 GHz wireless embedded systems where integrated MCU+RF reduces system complexity and certification effort.
FAQ
What is the maximum TX output power and corresponding current draw for ATMEGA2564RFR2-ZF?
The ATMEGA2564RFR2-ZF delivers up to +3.5 dBm TX output power, drawing 14.5 mA at maximum power in the 2.4 GHz transceiver domain. This value is measured at 3.0 V supply and represents peak current during active transmission; average current depends on duty cycle and data rate configuration.
Does ATMEGA2564RFR2-ZF support hardware AES encryption and how is it accessed?
Yes, ATMEGA2564RFR2-ZF includes a dedicated hardware AES-128 engine with true random number generation. It is accessed via the AVR's peripheral interface using specific I/O registers and requires no CPU cycles for encryption/decryption - enabling secure ZigBee key establishment and payload protection with deterministic timing.
What crystal configurations are required for full functionality of ATMEGA2564RFR2-ZF?
ATMEGA2564RFR2-ZF requires two crystals: a 16 MHz crystal on XTAL1/XTAL2 for transceiver PLL and CPU timing, and a 32.768 kHz crystal on PG3/PG4 for the asynchronous timer and IEEE 802.15.4 symbol counter. Both are mandatory for full low-power and MAC timing compliance - omitting either disables critical sleep or networking functions.
How many ADC channels are available on ATMEGA2564RFR2-ZF and what is their resolution?
ATMEGA2564RFR2-ZF provides 7 single-ended ADC input channels with 10-bit resolution and 330 ksps sampling rate. The ADC supports differential mode with programmable gain and includes an on-chip temperature sensor. Note that AREF is not exposed on the QFN-48 package, so AVDD serves as default reference.
What are the power supply requirements and domain separation for ATMEGA2564RFR2-ZF?
ATMEGA2564RFR2-ZF requires four external supply connections: EVDD (analog RF supply), DEVDD (digital RF supply), DVSS (digital ground), and AVSS (analog ground). Internally, it generates regulated AVDD and DVDD from these inputs. Proper decoupling (1 µF per supply pair) and separation of analog/digital ground planes are mandatory for RF stability and ADC accuracy.
ATMEGA2564RFR2-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:
- 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-ZF FAQ
1.How can I place an order for ATMEGA2564RFR2-ZF through Aetrix?
Please submit a Request for Quotation (RFQ) for ATMEGA2564RFR2-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 ATMEGA2564RFR2-ZF reliable?
The price and inventory of ATMEGA2564RFR2-ZF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATMEGA2564RFR2-ZF is usually 5 days.
3.What payment methods are accepted for ATMEGA2564RFR2-ZF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATMEGA2564RFR2-ZF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATMEGA2564RFR2-ZF?
ATMEGA2564RFR2-ZF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATMEGA2564RFR2-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 ATMEGA2564RFR2-ZF?
For technical support, including ATMEGA2564RFR2-ZF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATMEGA2564RFR2-ZF requirements.
6.How does Aetrix verify that ATMEGA2564RFR2-ZF is sourced from the original manufacturer or authorized distributors?
All ATMEGA2564RFR2-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 ATMEGA2564RFR2-ZF meets industry standards.
7.What is the process for return or replacement of ATMEGA2564RFR2-ZF?
All ATMEGA2564RFR2-ZF units undergo pre-shipment inspection (PSI). If there is an issue with ATMEGA2564RFR2-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 ATMEGA2564RFR2-ZF part is unused and in its original packaging.
Return procedure for ATMEGA2564RFR2-ZF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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