EM3595-RTR datasheet(2/59 Pages) SILABS

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EM359x

Rev 1.0

General Description

The Ember EM359x is a fully integrated System-on-Chip that integrates a 2.4 GHz, IEEE 802.15.4-2003-compliant

transceiver, 32-bit ARM® CortexTM-M3 microprocessor, flash and RAM memory, and peripherals of use to

designers of ZigBee-based systems.

The transceiver uses an efficient architecture that exceeds the dynamic range requirements imposed by the IEEE

802.15.4-2003 standard by over 15 dB. The integrated receive channel filtering allows for robust co-existence with

other communication standards in the 2.4 GHz spectrum, such as IEEE 802.11-2007 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.

The integrated 32-bit ARM® CortexTM-M3 microprocessor is highly optimized for high performance, low power

consumption, and efficient memory utilization. Including an integrated MPU, it supports two different modes of

operation—privileged mode and user mode. This architecture could allow for separation of the networking stack

from the application code, and prevents unwanted modification of restricted areas of memory and registers

resulting in increased stability and reliability of deployed solutions.

The EM359x has either 256 or 512 kB of embedded flash memory and either 32 or 64 kB of integrated RAM for

data and program storage. The Ember software for the EM359x employs an effective wear-leveling algorithm that

optimizes the lifetime of the embedded flash.

To maintain the strict timing requirements imposed by the ZigBee and IEEE 802.15.4-2003 standards, the EM359x

integrates a number of MAC functions, AES128 encryption accelerator, and automatic CRC handling 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. The Ember Packet

Trace Interface is also integrated with the MAC, allowing complete, non-intrusive capture of all packets to and from

the EM359x with Ember development tools.

The EM359x offers a number of advanced power management features that enable long battery life. A high-

frequency internal RC oscillator allows the processor core to begin code execution quickly upon waking. Various

deep sleep modes are available with less than 2 µA power consumption while retaining RAM contents. To support

user-defined applications, on-chip peripherals include optional USB, UART, SPI, TWI, ADC, and general-purpose

timers, as well as up to 32 GPIOs. Additionally, an integrated voltage regulator, power-on-reset circuit, and sleep

timer are available.

Finally, the EM359x utilizes standard Serial Wire and JTAG interfaces for powerful software debugging and

programming of the ARM CortexTM-M3 core. The EM359x integrates the standard ARM® system debug

components: Flash Patch and Breakpoint (FPB), Data Watchpoint and Trace (DWT), and Instrumentation Trace

Macrocell (ITM) as well as the advanced Embedded Trace Macrocell (ETM).

Target applications for the EM359x include:



Smart Energy



Building automation and control



Home automation and control



Security and monitoring



General ZigBee wireless sensor networking

This technical data sheet details the EM359x features available to customers using it with Ember software.

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