當(dāng)前位置:首頁 > 電源 > 數(shù)字電源
[導(dǎo)讀]本文介紹了EM250的主要特性,方框圖和應(yīng)用電路圖與所用材料清單.此外還介紹了采用EM250和Skyworks公司的SKY65335和SKY65337的ZigBee前端模塊參考設(shè)計(jì)的電路圖和材料清單(BOM).

Ember公司的EM250是單片ZigBee解決方案,集成了2.4GHz, IEEE 802.15.4兼容的收發(fā)器以及16位XAP2b微處理器,128KB閃存和5KB SRAM存儲器與基于ZigBee應(yīng)用的外設(shè).收發(fā)器允許和IEEE 802.11g 與藍(lán)牙共存,接收靈敏度為-99dBm,輸出功率為+3dBm,主要用于建筑物自動化和控制,家庭自動化控制,家庭娛樂控制以及財(cái)產(chǎn)跟蹤等.本文介紹了EM250的主要特性,方框圖和應(yīng)用電路圖與所用材料清單.此外還介紹了采用EM250和Skyworks公司的SKY65335和SKY65337的ZigBee前端模塊參考設(shè)計(jì)的電路圖和材料清單(BOM).

The EM250 is a single-chip solution that integrates a 2.4GHz, IEEE 802.15.4-compliant transceiver with a 16-bit XAP2b microprocessor. It contains integrated Flash and RAM memory and peripherals of use to designers of ZigBee-based applications.

The transceiver utilizes an efficient architecture that exceeds the dynamic range requirements imposed by the IEEE 802.15.4-2003 standard by over 15dB. The integrated receive channel filtering allows for co-existence with other communication standards in the 2.4GHz spectrum such as IEEE 802.11g and Bluetooth. The integrated regulator, VCO, loop filter, and power amplifier keep the external component count low. An optional
high performance radio mode (boost mode) is software selectable to boost dynamic range by a further 3dB.
The XAP2b microprocessor is a power-optimized core integrated in the EM250. It supports two different modes of operation—System Mode and Application Mode. The EmberZNet stack runs in System Mode with full access to all areas of the chip. Application code runs in Application Mode with limited access to the EM250 resources; this allows for the scheduling of events by the application developer while preventing modification of restricted areas of memory and registers. This architecture results in increased stability and reliability of deployed solutions.

The EM250 has 128kB of embedded Flash memory and 5kB of integrated RAM for data and program storage.
The EM250 software stack employs an effective wear-leveling algorithm in order to optimize the lifetime of the embedded Flash.

To maintain the strict timing requirements imposed by ZigBee and the IEEE 802.15.4-2003 standard, the EM250 integrates a number of MAC functions into the hardware. The MAC hardware handles automatic ACK transmission and reception, automatic backoff delay, and clear channel assessment for transmission, as well as automatic filtering of received packets. In addition, the EM250 allows for true MAC level debugging by integrating the Packet Trace Interface.

To support user-defined applications, a number of peripherals such as GPIO, UART, SPI, I2C, ADC, and generalpurpose timers are integrated. Also, an integrated voltage regulator, power-on-reset circuitry, sleep timer, and low-power sleep modes are available. The deep sleep mode draws less than 1μA, allowing products to achieve long battery life.

Finally, the EM250 utilizes the non-intrusive SIF module for powerful software debugging and programming of the XAP2b microcontroller.

EM250主要特性:
Integrated 2.4GHz, IEEE 802.15.4-compliant transceiver:
Robust RX filtering allows co-existence with IEEE 802.11g and Bluetooth devices
- 99dBm RX sensitivity (1% PER, 20byte packet)
+3dBm nominal output power
Increased radio performance mode (boost mode) gives - 100dBm sensitivity and + 5dBm
transmit power
Integrated VCO and loop filter
Integrated IEEE 802.15.4 PHY and lower MAC with DMA
Integrated hardware support for Packet Trace Interface for InSight Development Environment
Provides integrated RC oscillator for low power operation
Supports optional 32.768kHz crystal oscillator for higher accuracy needs
16-bit XAP2b microprocessor
Integrated memory:
128kB of Flash
5kB of SRAM
Configurable memory protection scheme
Two sleep modes:
Processor idle
Deep sleep—1.0μA (1.5μA with optional 32.768kHz oscillator enabled)
Seventeen GPIO pins with alternate functions
Two Serial Controllers with DMA
SC1: I2C master, SPI master + UART
SC2: I2C master, SPI master/slave
Two 16-bit general-purpose timers; one 16-bit sleep timer
Watchdog timer and power-on-reset circuitry
Non-intrusive debug interface (SIF)
Integrated AES encryption accelerator
Integrated ADC module first-order, sigmadelta converter with 12-bit resolution
Integrated 1.8V voltage regulator
EM250主要應(yīng)用:
Target applications for the EM250 include:
Building automation and control
Home automation and control
Home entertainment control
Asset tracking



圖1.EM250方框圖



圖2.EM250典型應(yīng)用電路[!--empirenews.page--]
圖2中典型應(yīng)用電路的材料清單(BOM):



Skyworks 和Ember ZigBee前端模塊參考設(shè)計(jì)

Skyworks and Ember Reference Design for Industrys First Portfolio of Front-End Modules for ZigBee® Applications
Skyworks Solutions and Ember’s reference design for the industry’s first portfolio of ZigBee front-end modules targeting applications such as smart meters in energy management, home area networks (HAN), and industrial automation, is now available.

ZigBee is a wireless network global standard that addresses the unique needs of remote monitoring and control, and sensor-network applications. West Technology Research Solutions is forecasting the ZigBee/IEEE 802.15.4 market to grow at an annual rate of over 117 percent ─ from approximately 8.4 million units shipped in 2007 to as many as 516 million in 2012.



圖3.ZigBee前端模塊參考設(shè)計(jì)電路圖(1)



圖4.ZigBee前端模塊參考設(shè)計(jì)電路圖(2)
ZigBee前端模塊參考設(shè)計(jì)材料清單(BOM):

本站聲明: 本文章由作者或相關(guān)機(jī)構(gòu)授權(quán)發(fā)布,目的在于傳遞更多信息,并不代表本站贊同其觀點(diǎn),本站亦不保證或承諾內(nèi)容真實(shí)性等。需要轉(zhuǎn)載請聯(lián)系該專欄作者,如若文章內(nèi)容侵犯您的權(quán)益,請及時(shí)聯(lián)系本站刪除。
換一批
延伸閱讀

9月2日消息,不造車的華為或?qū)⒋呱龈蟮莫?dú)角獸公司,隨著阿維塔和賽力斯的入局,華為引望愈發(fā)顯得引人矚目。

關(guān)鍵字: 阿維塔 塞力斯 華為

加利福尼亞州圣克拉拉縣2024年8月30日 /美通社/ -- 數(shù)字化轉(zhuǎn)型技術(shù)解決方案公司Trianz今天宣布,該公司與Amazon Web Services (AWS)簽訂了...

關(guān)鍵字: AWS AN BSP 數(shù)字化

倫敦2024年8月29日 /美通社/ -- 英國汽車技術(shù)公司SODA.Auto推出其旗艦產(chǎn)品SODA V,這是全球首款涵蓋汽車工程師從創(chuàng)意到認(rèn)證的所有需求的工具,可用于創(chuàng)建軟件定義汽車。 SODA V工具的開發(fā)耗時(shí)1.5...

關(guān)鍵字: 汽車 人工智能 智能驅(qū)動 BSP

北京2024年8月28日 /美通社/ -- 越來越多用戶希望企業(yè)業(yè)務(wù)能7×24不間斷運(yùn)行,同時(shí)企業(yè)卻面臨越來越多業(yè)務(wù)中斷的風(fēng)險(xiǎn),如企業(yè)系統(tǒng)復(fù)雜性的增加,頻繁的功能更新和發(fā)布等。如何確保業(yè)務(wù)連續(xù)性,提升韌性,成...

關(guān)鍵字: 亞馬遜 解密 控制平面 BSP

8月30日消息,據(jù)媒體報(bào)道,騰訊和網(wǎng)易近期正在縮減他們對日本游戲市場的投資。

關(guān)鍵字: 騰訊 編碼器 CPU

8月28日消息,今天上午,2024中國國際大數(shù)據(jù)產(chǎn)業(yè)博覽會開幕式在貴陽舉行,華為董事、質(zhì)量流程IT總裁陶景文發(fā)表了演講。

關(guān)鍵字: 華為 12nm EDA 半導(dǎo)體

8月28日消息,在2024中國國際大數(shù)據(jù)產(chǎn)業(yè)博覽會上,華為常務(wù)董事、華為云CEO張平安發(fā)表演講稱,數(shù)字世界的話語權(quán)最終是由生態(tài)的繁榮決定的。

關(guān)鍵字: 華為 12nm 手機(jī) 衛(wèi)星通信

要點(diǎn): 有效應(yīng)對環(huán)境變化,經(jīng)營業(yè)績穩(wěn)中有升 落實(shí)提質(zhì)增效舉措,毛利潤率延續(xù)升勢 戰(zhàn)略布局成效顯著,戰(zhàn)新業(yè)務(wù)引領(lǐng)增長 以科技創(chuàng)新為引領(lǐng),提升企業(yè)核心競爭力 堅(jiān)持高質(zhì)量發(fā)展策略,塑強(qiáng)核心競爭優(yōu)勢...

關(guān)鍵字: 通信 BSP 電信運(yùn)營商 數(shù)字經(jīng)濟(jì)

北京2024年8月27日 /美通社/ -- 8月21日,由中央廣播電視總臺與中國電影電視技術(shù)學(xué)會聯(lián)合牽頭組建的NVI技術(shù)創(chuàng)新聯(lián)盟在BIRTV2024超高清全產(chǎn)業(yè)鏈發(fā)展研討會上宣布正式成立。 活動現(xiàn)場 NVI技術(shù)創(chuàng)新聯(lián)...

關(guān)鍵字: VI 傳輸協(xié)議 音頻 BSP

北京2024年8月27日 /美通社/ -- 在8月23日舉辦的2024年長三角生態(tài)綠色一體化發(fā)展示范區(qū)聯(lián)合招商會上,軟通動力信息技術(shù)(集團(tuán))股份有限公司(以下簡稱"軟通動力")與長三角投資(上海)有限...

關(guān)鍵字: BSP 信息技術(shù)
關(guān)閉
關(guān)閉