参数资料
型号: EM250-RCM-R
厂商: Silicon Laboratories Inc
文件页数: 2/124页
文件大小: 0K
描述: EM250 RCM BOARD
标准包装: 12
类型: 收发器,802.15.4/Zigbee
频率: 2.4GHz
适用于相关产品: EM250
其它名称: 636-1023
EM250
General Description
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 PRO 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, I 2 C, ADC, and general-
purpose 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 1 μ A, 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.
Target applications for the EM250 include:
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Building automation and control
Home automation and control
Home entertainment control
Asset tracking
The EM250 is purchased with EmberZNet PRO, the Silicon Labs ZigBee-compliant software stack, providing a
ZigBee profile-ready, platform-compliant solution. This technical datasheet details the EM250 features
available to customers using it with the EmberZNet PRO stack.
120-0082-000V Rev 1.1
Page 2
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