User Manual

Microcontroller Unit. In this document it also means the processor, which is the core of
ZigBit
module
O-QPSK Offset Quadrature Phase-Shift Keying modulation scheme
OEM Original Equipment Manufacturer
OTA Over-The-Air upgrade
PCB Printed Circuit Board
PER Package Error Ratio
RAM Random Access Memory
RF Radio Frequency
RTS/CTS Request to Send/ Clear to Send
RX Receiver
SMA Surface Mount Assembly
SPI Serial Peripheral Interface
SW Software
TTM Time To Market
TX Transmitter
UART Universal Asynchronous Receiver/Transmitter
USART Universal Synchronous/Asynchronous Receiver/Transmitter
USB Universal Serial Bus
ZDK ZigBit Development Kit
ZigBee,
ZigBee PRO
Wireless networking standards targeted at low-power applications
802.15.4 The IEEE 802.15.4-2006 standard applicable to low-rate wireless Personal Area
Network
2.1 Overview
RM900A works at 868MHz/910-924MHz, 11 channels, channel spacing 2MHz. You
can change its TX power, working channel through com tool.
RM900A is a high Tx-power, high sensitivity IEEE 802.15.4/ZigBee module. Based on
a combination of Atmel’s latest MCU wireless hardware platform, power amplifier and low
noise amplifier, the RM900A offers superior radio performance.