User Manual

Table Of Contents

Model SM240 Data Sheet · Document Number 430154-01A · Page 4 of 12

1.0 RF Engine 200 Series

OEM Modules Overview

The RF Engine 200 Series (Model Number SM240) is an IEEE 802.15.4, low power,

highly-reliable solution to embedded wireless control and monitoring network needs that

require high data rates. The SM240 embeds Synapse’s SNAP OS, the industry’s first

Internet-enabled, wireless mesh network operating system into the Atmel

ATmega128RFA1 single-chip AVR® microcontroller with an integrated transceiver that

delivers up to 2Mbits/sec. These low-cost modules can have a range of up to three

miles and power consumption as low as 1.6 µA to enable a new generation of battery-

driven systems.

SNAP’s on-board Python interpreter provides for rapid application development and

over-the-air programming, while Atmel’s low-power RF single-chip design saves board

space and lowers the overall Bill of Materials and power consumption. The SM240 is

approved as an FCC Part 15 unlicensed modular transmitter. The modules provide up

to 16 channels of operation in the ISM 2.4GHz frequency band. The SM240 module

contains both a power amplifier for transmission and a low noise amplifier in the receive

path for extended range.

This Data Sheet details Part Numbers SM240:

• 20 GPIO and up to 7 A/D inputs

• 128k flash, 58.5k free for over-the-air uploaded user apps

• Two UART ports for control or transparent data which surmounts noisy

environments

• Low power modes: 1.6 µA with internal timer running

• Spread spectrum (DSSS) technology

• Socket-able or solder-able

• Up to 2 Mbps Data Rate

• 2.4 GHz RF Frequency

• Spread Spectrum (DSSS) technology

• Receive Amplifier (7 dBm) standard

• Transmit amplifier (15 dBm) for best-in-class range

• SM240: F-Antenna (2.5 miles LoS at 250Kbps)