EM260-RTR datasheet(2/50 Pages) SILICONIMAGE

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EM260

120-0260-000M Rev 1.1

Page 2

General Description

Note: Several important sections have been moved into standalone documents. Section 6 describing the

ASH protocol has been moved to document UG101, UART Gateway Protocol Reference. Section 7 on

EZSP has been moved to document UG100, EZSP Reference Guide.

The EM260 integrates a 2.4GHz, IEEE 802.15.4-compliant transceiver with a 16-bit network processor (XAP2b

core) to run EmberZNet PRO, Silicon Labs’ ZigBee-compliant network stack. The EM260 exposes access to the

EmberZNet PRO API across a standard SPI module or a UART module, allowing application development on a

Host platform. This means that the EM260 can be viewed as a ZigBee peripheral connected over a serial

interface. The XAP2b microprocessor is a power-optimized core integrated in the EM260. It contains

integrated Flash and RAM memory along with an optimized peripheral set to enhance the operation of the

network stack.

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 EM260 contains embedded Flash and integrated RAM for program and data storage. By employing an

effective wear-leveling algorithm, the stack optimizes the lifetime of the embedded Flash, and affords the

application the ability to configure stack and application tokens within the EM260.

To maintain the strict timing requirements imposed by ZigBee and the IEEE 802.15.4-2003 standard, the EM260

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 EM260 allows for true MAC level debugging by

integrating the Packet Trace Interface.

An integrated voltage regulator, power-on-reset circuitry, sleep timer, and low-power sleep modes are

available. The deep sleep and power down modes draw less than 1μA, allowing products to achieve long

battery life.

Finally, the EM260 utilizes the non-intrusive SIF module for powerful software debugging and programming of

the network processor.

Target applications for the EM260 include:

Building automation and control

Home automation and control

Home entertainment control

Asset tracking

The EM260 can only be purchased with the EmberZNet PRO stack. This technical datasheet details the EM260

features available to customers using it with the EmberZNet PRO stack.

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