RAE Systems RM2420 802.15.4 Radio Communication Module User Manual

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Mirror Download [FCC.gov]
Document ID	518595
Application ID	KDRV2hD/pK9oQFbgFDOfPQ==
Document Description	Users Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	3.35kB (41911 bits)
Date Submitted	2005-02-25 00:00:00
Date Available	2005-02-24 00:00:00
Creation Date	2005-02-18 15:35:17
Producing Software	Acrobat Distiller 6.0 (Windows)
Document Lastmod	2005-02-18 15:35:17
Document Title	Microsoft Word - RM2420 FCC Approved Datasheet& manual.doc
Document Creator	PScript5.dll Version 5.2
Document Author:	agnesf

FCC Approved RM2420 RF Communication Module Data Sheet
RAE Systems has partnered with Ember to manufacture and promote
module-level products. RAE Systems manufactures the EM2420 RF
Communications Module as the RM2420 RF Communications Module.
The RM2420 module offers a complete microcontroller/transceiver solution
Containing all hardware features necessary for development of a lowdata-rate, low-power wireless application. The primary components
include a 2.4GHz, IEEE 802.15.4 compliant Zigbee-ready transceiver
(RM2420), an 8-bit microcontroller (ATmega128L or ATmega64L), a 40-pin
interface connector, a reverse-polar SAM antenna connector, three low profile
crystals (32.768KHz, 16MHz) and power management circuitry.
The RM2420 Module is available to companies who have purchased the Ember EM2420 Developer’s Kit and it
complies with part 15 of the FCC rules.
Specifications
Frequency Band
16 channels of operation in the 2.4GHz world wide ISM band. 5MHz
channel spacing.
High Performance
RX sensitivity of better than -90 dBm at 1% packet error rate for a 20
byte payload.
Efficient
Built-in CRC and AES-128 encryption. Buffered full packet transmit and
receive. High performance SPI data and control interface operates up to
10MHz.
Power
+3.3V + .3V from carrier board, 3.0V to 3.6V from battery pack
Microcontroller
ATmega128L (U2) or Atmega64L (U2).
Radio
RM2420 (U5)
Rx sensitivity; -94dBm (1% PER, 20-byte packet) Type
Tx power: 0dBm max
Interfaces
40-pin surface-mount RM2420 RCM header (J1)
2-pin surface-mount right-angle battery connector (J2)
Flexible
Designed for a broad spectrum of applications including IEEE 802.15.4
and Zigbee compliant devices.
Range
Line of sight range of 75 meters. Available option of a +10dBm output
amplifier for longer range transmission.
RF
250kbps OQPSK Direct Sequence Spread Spectrum radio in
accordance with the IEEE 802.15.4 specification. 0dBm output power.
Dimensions
1 x 1.75 inches
Antenna Interface
50-Ohm reverse polar SMA
Operating Temperature Range
-40ºC to +85ºC
External Power Pin
Used to power external sensors (J1.7)
20mA max
Indicators
Two LEDs, one red, one yellow (DS1, DS2)
Specifications (continued)
Operating Voltage
1.8 V (1.6 V to 2.0 V) Internal Regulator Disabled
3.3 V (2.0V to 3.6 V) Internal Regulator Enabled
Current Consumption
0.5 µA Sleep
20.7 mA TX @ 0 dBm
19.7 mA RX / Idle
Frequency Range
2405 to 2480 MHz
Output Power
-32 to +0 dBm
Data Rate
250 kbps
FCC ID
SU3RM2420 - Complies with Part 15 of the FCC rules. Operation is
subject to the following two conditions: 1) This device may not cause
harmful interference, and 2) This device must accept any interference
received, including interference that may cause undesired operation
*On going projects to enhance our products means that these specifications are subject to changes
Interface Decal Dimensions
Components
Microcontroller (U2)
The 8-bit flash-based ATmega 128L/ATmega64L microcontroller contains software for the configuration and
control of the RM2420, AMC and network functions, and the user-defined application software. The
microcontroller utilizes a 32.768KHz crystal for MAC timing and power management, as well as external crystal
operating at 8Hz. A variety of peripherals are routed to headers on the Developer Kit carrier board for
application development. For detail information on the microcontroller, see www.atmel.com.
When configuring the Ember Studio Debug Reader, enter the following baud rate into the Debug Preference
Window: 100,000. This rate is set by the microcontroller operating frequency.
Radio (U5)
The radio is an RM2420, a true single-chip 2.4GHz IEEE 802.15.4 – compliant and Zigbee-ready radio
frequency transceiver designed for low-power and low-voltage wireless applications. It includes a digital direct
sequence spread-spectrum (DSSS) baseband modem with an effective data rate of 250kbps.
Channel Frequencies
These channels are equivalent to IEEE 802.15.4 channels 11 to 26.
RM2420 Channel Frequencies (GHz)
Pin Layout
Pin
ATmega 128/64 Pin Name
GND
GND
PD3 (TXD1/INT3)
nRESET
PD2 (RXD1/INT2)
PG1 (nRD)
+3.3V out
10
11
+3.3V in
GND
GND
PD1 (SDA/INT1)
12
13
PG0 (nWR)
PD0 (SDl/INT0)
14
PC2
15
16
PB7 (OC2/OC1C)
PC3
17
18
PB6
PC5
Description
Digital GND
Digital GND
EmberNet stack defaults to Alternate Function TX UART
(TXD1)
External reset, active low
EmberNet stack defaults to Alternate Function RX UART
(Rxd1)
General purpose I/O
External power pin used to run custom external sensors
and/or devices; 20mA max
Input power from carrier boards
Digital GND
Digital GND
General purpose I/O; EmberNet defaults signal as an
output connected to EM2 (button 1) on carrier board (with
J11 installed)
General purpose I/O
General purpose I/O; EmberNet defaults signal as an
output connected to EM1 (button 0) on carrier board (with
J10 installed)
Dedicated connection to red LED (D55 on carrier board)
for debugging purposes
General purpose I/O
Dedicated connection to yellow LED (DS4 on carrier
board) for debugging purposes
General purpose I/O
Dedicated connection to orange LED (DS2 on carrier
board) for debugging purposes
19
NC
Pin
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Dedicated for use with carrier board emulator/debug
module
ATmega 128/64 Pin Name Description
PC6
Dedicated connection to green LED (DS3 on carrier
board) for debugging purposes
PB3
Master In/Slave Out SPI (used to configure the
EM2420)
PG2
General purpose I/O
PB2 (MOSI)
Master Out/Slave In SPI (used to configure the
RM2420)
AVCC
Analog voltage reference pin
PB1 (SCK)
SPI clock (used to configure the RM2420)
AGND
Analog ground pin (same as digital GND)
PC1
Dedicated signal for Temperature Enable (active high)
for temperature sensor on carrier board
AREF
ADC voltage reference pin
NC
PF1 (ADC1)
EmberNet stack uses alternate function ACD1 to
monitor external battery pack voltage
NC
PF2 (ADC2)
EmberNet stack uses alternate function ACD2 for
temperature calibration
PE3 (OC3A/AIN1)
General purpose I/O
PF4 (ADC4/TCK)
General purpose I/O; if JTAG is enabled, the
EmberNet stack uses alternate function TCK for JTAG
PE2 (XCK0/AIN0)
General Purpose I/O
PF5 (ADC5/TMS)
General purpose I/O; if JTAG is enabled, the
EmberNet stack uses alternate function TMS for
JTAG
PE1 (TXD0/PDO)
EmberNet stack defaults to alternate function TX
UART (TXD0)
PF6 (ADC6/TDO)
General purpose I/O; if JTAG is enabled, the
EmberNet stack uses alternate function TDO for
JTAG
PE0 (RXD0/PDI)
EmberNet stack defaults to alternate function RX
UART (RXD0)
PF7 (ADC7/TDI)
General purpose I/O; if JTAG is enabled, the
EmberNet stack uses alternate function TDI for JTAG
Instructions
All users of this device must state on the outside of the host “Contains FCC ID: SU3RM2420”.
Warning (Part 15.21)
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s
authority to operate the equipment.
This device must be operated as supplied by RAE Systems. Any changes or modifications made the device
RM2420 can be jeopardize, but there is one exception. The radio’s antenna can be replaced as long as the
specification of the antenna matches the original (ant-2.4-cw-rcs-sma by Linx technologies).

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Title                           : Microsoft Word - RM2420 FCC Approved Datasheet& manual.doc
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Author                          : agnesf

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