基于ATmega128RFA1设计的低功耗ZigBee解决方案

Atmel公司的ATmega128RFA1是低功耗CMOS 8位MCU,采用AVR增强性RISC架构和2.4GHz ISM频段高数据速率收发器,吞吐量达1 MIPS per MHz .无线收发器的数据速率从250 kb/s到高达2 Mb/s,还提供帧处理,有杰出的接收灵敏度(-100dBm)和高发送功率(达3.5dBm),主要应用在ZigBee® / IEEE 802.15.4-2006/2003,通用的2.4GHz ISM频段, F4CE, SP100, WirelessHART, ISM和IPv6 / 6LoWPAN.本文介绍了ATmega128RFA1主要特性, 基本应用电路图和相应的材料清单(BOM),以及扩展特性应用电路图和评估板特性与电路图.

The ATmega128RFA1 is a low-power CMOS 8 bit microcontroller based on the AVR enhanced RISC architecture combined with a high data rate transceiver for the 2.4 GHz ISM band. It is derived from the ATmega1281 microcontroller and the AT86RF231 radio transceiver.

By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

The radio transceiver provides high data rates from 250 kb/s up to 2 Mb/s, frame handling, outstanding receiver sensitivity and high transmit output power enabling a very robust wireless communication.

ATmega128RFA1主要特性:

High Performance, Low Power AVR® 8-Bit Microcontroller

Advanced RISC Architecture

- 135 Powerful Instructions C Most Single Clock Cycle Execution

- 32x8 General Purpose Working Registers

- Fully Static Operation

- Up to 16 MIPS Throughput at 16 MHz and 1.8V

- On-Chip 2-cycle Multiplier

Non-volatile Program and Data Memories

- 128K Bytes of In-System Self-Programmable Flash

Endurance: 2000 Write/Erase Cycles @ 85℃

- 4K Bytes EEPROM

Endurance: 2000 Write/Erase Cycles @ 85℃

- 16K Bytes Internal SRAM

JTAG (IEEE std. 1149.1 compliant) Interface

- Boundary-scan Capabilities According to the JTAG Standard

- Extensive On-chip Debug Support

- Programming of Flash EEPROM, Fuses and Lock Bits through the JTAG interface

Peripheral Features

- Multiple Timer/Counter PWM channels

- Real Time Counter with Separate Oscillator

- 10-bit, 330 ks/s A/D Converter; Analog Comparator; On-chip Temperature Sensor

- Master/Slave SPI Serial Interface

- Two Programmable Serial USART

- Byte Oriented 2-wire Serial Interface

Advanced Interrupt Handler

Watchdog Timer with Separate On-Chip Oscillator

Power-on Reset and Low Current Brown-Out Detector

Advanced Power Save Modes

Fully integrated Low Power Transceiver for 2.4 GHz ISM Band

- Supported Data Rates: 250 kb/s and 500 kb/s, 1 Mb/s, 2 Mb/s

- -100 dBm RX Sensitivity; TX Output Power up to 3.5 dBm

- Hardware Assisted MAC (Auto-Acknowledge, Auto-Retry)

- 32 Bit IEEE 802.15.4 Symbol Counter

- Baseband Signal Processing

- SFR-Detection, Spreading; De-Spreading; Framing ; CRC-16 Computation

- Antenna Diversity and TX/RX control

- TX/RX 128 Byte Frame Buffer

Hardware Security (AES, True Random Generator)

Integrated Crystal Oscillators (32.768 kHz 16 MHz)

I/O and Package

- 38 Programmable I/O Lines

- 64-pad QFN (RoHS/Fully Green)

Temperature Range: -40℃ to 85℃ Industrial

Supply voltage range 1.8V to 3.6V with integrated voltage regulators

Ultra Low Power consumption (1.8 to 3.6V) for Rx/Tx AVR: 18.6 mA

- CPU Active Mode (16MHz): 4.1 mA

- 2.4GHz Transceiver: RX_ON 12.5 mA / TX 14.5 mA (maximum TX output power)

- Deep Sleep Mode: 250nA @ 25℃

Speed Grade: 0 C 16 MHz @ 1.8 C 3.6V

ATmega128RFA1应用:

ZigBee®/IEEE 802.15.4-2006/2003C Full And Reduced Function Device (FFD/RFD)

General Purpose 2.4GHz ISM Band Transceiver with Microcontroller

RF4CE, SP100, WirelessHART, ISM Applications and IPv6 / 6LoWPAN