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 GH电感生产厂家z 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 R电感厂家ISC Architecture
- 135 Powerful Instructions – 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插件电感 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
• Powe电感生产厂家r-on Reset and Low Current Brown-Out Detector
• Advanced Power Save Modes
• Fully integrat多层电感器ed 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 – 16 MHz @ 1.8 – 3.6V
ATmega128RFA1应用:
• ZigBee®/IEEE 802.15.4-2006/2003™– Full And Reduced Function Device (FFD/RFD)
• General Purpose 2.4GHz ISM Band Transceiver with Microcontroller
• RF4CE, SP100, WirelessHART™, ISM Applications and IPv6 / 6LoWPAN
图1.ATmega128RFA1方框图
图2.ATmega128RFA1基本应用电路图1
&模压电感生产厂电感器生产厂家nbsp; 东芝公司宣布，该公司已经推出了用于继电器驱动器的MOSFET（金属氧化物半导体场效应晶体管）“SSM3K337R”。这款新设备使用一种有源箝位结构，功率电 电感是储能元件，多用于电源滤波回路、LC振荡电路、中低频的滤波电路等，其应用频率范围很少超过50MHz。对电感而言，它的感抗是和频率成正比的。这可以由公式：XL=2πfL来说明，其中XL是感抗（单位 鉴于目前已有的感知时隙与周期优化算法通常忽略授权用户的出现概率，造成感知性能 和传输效率下降的问题，因此提出了一种基于授权用户出现概率的感知时隙与周期联合优化算 法．新
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