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單芯片解決方案

對于所有物聯(lián)網(wǎng) (IoT) 設(shè)計，現(xiàn)在，可以在一流的 2.4 GHz 射頻收發(fā)器中選用基于 ARM® Cortex®-M0+ 的 32 位微控制器或選用 8 位 AVR 內(nèi)核微控制器。SAM R21 系列像其先前的產(chǎn)品（ATmegaxxxRFR2 和 ATmegaxxxRFA1）一樣，是符合 IEEE 802.15.4 標準的單芯片無線解決方案，它超越了慣有的所有優(yōu)點和功能，具有如下改進：

借助廣泛的存儲密度產(chǎn)品（64K 至 256K 閃存存儲器），可以輕松擴展您的設(shè)計
通過在主動模式下僅消耗 70?A/MHz，讓您的電池供電設(shè)備持續(xù)運行更長的時間；與市場上居第二位的產(chǎn)品相比，電流消耗減少高達 50%
在接口組合與 PCB 布線方面的設(shè)計上更靈活，從而支持更豐富的外設(shè)，例如，可以加入能配置為 UART/USART、SPI 或 I2C 的串行通信模塊 (SERCOM)
通過使用高達 48MHz 的工作頻率并提供 105dBm 的射頻鏈路預(yù)算，滿足更高性能的應(yīng)用

所有這些改進的優(yōu)點都基于 8 位 AVR 無線微控制器所打造的堅實基礎(chǔ)，多年來 8 位 AVR 無線微控制器應(yīng)用廣泛，可提供如下功能：

先進的硬件輔助降低功耗 (RPC) 功能
多種掉電模式，例如，射頻喚醒功能，能在微控制器休眠時讓射頻收發(fā)器保持活動狀態(tài)，從而進一步提高了效率。
通過為每個傳入幀自動從兩個天線中選擇最佳信號，多天線集成功能可以提高系統(tǒng)的可靠性

最后但同樣重要的是，借助免費的 Atmel 軟件棧、無線編輯器、庫以及硬件評估和開發(fā)工具包，系統(tǒng)開發(fā)依然非常容易。

32-bit ARM Cortex Based

優(yōu)勢	說明
ARM Cortex M0+ based MCU running up to 48MHz Up to 256KB embedded Flash Low power consumption at <70?A/MHz 12-channel DMA and event system Up to five serial communication modules (SERCOM) Full-Speed USB Device and embedded Host 12-bit ADC Hardware touch support Ultra-low power 2.4GHz transceiver	The Atmel® SAM R21 is a series of feature-rich, extremely low-power 2.4GHz wireless Cortex M0+MCUs that are designed for industrial and consumer wireless applications, either running proprietary communication stacks or solutions compliant to the IEEE 802.15.4 standard.
詳情 The Atmel® SAM R21 incorporates AVR ease-of-use into an IEEE 802.15.4 solution comprised of an extremely low-power 2.4GHz wireless with 32-bit Cortex M0+MCUs. The devices are capable of operating at up to 48MHz, achieving 2.14 CoreMark/MHz. Its extremely low power consumption extends battery life and enables battery-less/energy-harvesting solutions. It features antenna diversity to improve wireless connectivity and extends range. Furthermore, the incorporation of up to five serial communication modules (SERCOM) configurable as UART/USART, SPI or I2C enables greater flexibility in your board designs.

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Device

說明

ATSAMR21E16A

Single-chip ARM® Cortex®-M0+ based 32-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 64KB Flash and 16 I/O pins in a QFN32 package.

ATSAMR21E17A

Single-chip ARM® Cortex®-M0+ based 32-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 128KB Flash and 16 I/O pins in a QFN32 package.

ATSAMR21E18A

Single-chip ARM® Cortex®-M0+ based 32-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 256KB Flash and 16 I/O pins in a QFN32 package.

ATSAMR21G16A

Single-chip ARM® Cortex®-M0+ based 32-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 64KB Flash and 28 I/O pins in a QFN48 package.

ATSAMR21G17A

Single-chip ARM® Cortex®-M0+ based 32-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 128KB Flash and 28 I/O pins in a QFN48 package.

ATSAMR21G18A

Single-chip ARM® Cortex®-M0+ based 32-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 256KB Flash and 28 I/O pins in a QFN48 package.

8-bit AVR Based

優(yōu)勢	說明
8-bit AVR® based MCU enabling ultra-low power consumption Excellent RF performance Ultra-low power 2.4GHZ transceiver 103.5 dB power budget Operation from 1.8V to 3.6V RX override PSD mask shaping Antenna diversity AES 128-bit hardware encryption External RF front-end Control High-temperature version (-40°C to +125°C)	The Atmel AtmegaRFR2 series combines the industry's leading AVR 8-bit microcontroller and a best-in-class 2.4GHz RF transceiver in industry's best single-chip targeting IEEE 802.15.4 and ZigBee applications.
詳情 The ATmegaRFR2 series consists of devices with 64K, 128K, and 256K of Flash, 7x7mm QFN48 and 9x9mm QFN64 package options, and temperature grades from -40C to +125C. Ultra-low power capacity and support for +125C make the new family ideal for the quickly growing wireless lighting control market. Atmel offers state of the art ZigBee stacks, which have obtained “Golden Unit” status with the ZigBee Alliance for its ZigBee Light Link reference implementation.

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器件

說明

ATmega2564RFR2

Single-chip 8-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 256KB Flash and 33 I/O pins.

ATmega256RFR2

Single-chip 8-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 256KB Flash and 38 I/O pins.

ATmega1284RFR2

Single-chip 8-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 128KB Flash and 33 I/O pins.

ATmega128RFR2

Single-chip 8-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 128KB Flash and 38 I/O pins.

ATmega644RFR2

Single-chip 8-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 64KB Flash and 33 I/O pins.

ATmega64RFR2

Single-chip 8-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 64KB Flash and 38 I/O pins.

ATmega128RFA1

Single-chip 8-bit Microcontroller with Low Power 2.4GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 128KB Flash and 38 I/O pins.

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單芯片解決方案

32-bit ARM Cortex Based

優(yōu)勢

說明

8-bit AVR Based

優(yōu)勢

說明