DEVELOPMENT KIT
(Info
Click here)
•
2.4 GHz ZigBee Transceiver Module
•
Small Size, Light Weight, Low Cost
•
Sleep Current less than 3 µA
•
FCC and ETSI Certified for Unlicensed Operation
The ZMN2405 2.4 GHz transceiver module is a low cost solution for point-to-point,
point-to-multipoint and MESH wireless systems. The ZMN2405 module provides the
flexibility and versatility to serve applications ranging from cable replacements to
sensor networks. Based on the IEEE 802.15.4 wireless standard and the ZigBee
protocol stack, the ZMN2405 module is easy to integrate and provides robust wire-
less communications including MESH network operation. The ZMN2405 includes
RFM’s powerful CSM application profile, which eliminates the need for customer
firmware programming.
ZMN2405 Absolute Maximum Ratings
Rating
All Input/Output Pins
Non-Operating Ambient Temperature Range
ZMN2405 Electrical Characteristics
Characteristic
Operating Frequency Range
Operating Frequency Tolerance
Spread Spectrum Method
Modulation Type
Number of RF Channels
RF Data Transmission Rate
Symbol Rate Tolerance
RF Channel Spacing
Receiver Sensitivity, 10E-5 BER
Upper Adjacent Channel Rejection, +5 MHz
Lower Adjacent Channel Rejection, -5 MHz
Upper Alternate Channel Rejection, +10 MHz
Lower Alternate Channel Rejection, -10 MHz
Maximum RF Transmit Power
Transmit Power Adjustment
Optimum Antenna Impedance
-3
Sym
Notes
Minimum
2405
-300
Value
-0.3 to +3.6
-40 to +85
Units
V
o
ZMN2405
ZigBee
Transceiver
Module
C
Shown with Shield Removed
Typical
Maximum
2480
300
Units
MHz
kHz
Direct Sequence
O-QPSK
16
250
120
5
-92
41
30
55
53
0
26
50
kb/s
ppm
MHz
dBm
dB
dB
dB
dB
dBm
dB
Ω
www.RFM.com E-mail: info@rfm.com
©2008 by RF Monolithics, Inc.
Page 1 of 6
ZMN2405 - 5/20/08
ZMN2405 Electrical Characteristics
Characteristic
ADC Input Range
ADC Input Resolution
ADC Input Impedance
PWM Output Resolution
UART Baud Rate
Digital I/O:
Logic Low Input Level
Logic High Input Level
Logic Input Internal Pull-up/Pull-down Resistor
GPIO3 Logic Low Sink Current
Power Supply Voltage Range
Power Supply Voltage Ripple
Receive Mode Current
Transmit Mode Current
Sleep Mode Current
Operating Temperature Range
-40
27
28
3
85
V
CC
+3.3
-0.3
2.8
20
20
+5.5
10
0.5
3.6
V
V
KΩ
mA
Vdc
mV
P-P
mA
mA
µA
o
Sym
Notes
Minimum
0
7
55
Typical
Maximum
3.3
12
12
Units
V
bits
MΩ
bits
kb/s
1.2
115.2
C
ZMN2405 Firmware Configurations
ZMN2405 modules are shipped loaded with one of three firmware configurations: coordinator, router or end
node. Each ZigBee network will include one, and only one coordinator. This module coordinates the overall net-
work operation and is the host application or gateway interface point for the network. The part number designation
for a coordinator is
ZMN2405-C.
Router modules are capable of retransmitting messages and provide the mesh
networking infrastructure in a ZigBee network. The part number designation for a router is
ZMN2405-R.
End node
modules provide field connection points for sensors, data loggers, PLCs, etc. The coordinator and the routers in a
ZigBee network must stay active (awake) continuously to support network operation. End nodes can be sleep
duty cycled where needed for extended battery life operation. The part number designation for an end node is
ZMN2405-E.
A router can provide the same field connection support as an end node, but a router cannot be sleep
duty cycled without affecting mesh network operation. Specify the number of modules for each firmware configu-
ration when ordering ZMN2405 modules.
CAUTION: Electrostatic Sensitive Device. Observe precautions when handling.
www.RFM.com E-mail: info@rfm.com
©2008 by RF Monolithics, Inc.
Page 2 of 6
ZMN2405 - 5/20/08
Z M N 2 4 0 5 B lo c k D ia g r a m
+ 3 .3 V
V C C
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
F ilte r
F ilte r
F ilte r
R e g
3 2 .7 6 8 k H z
3 2 M H z
G N D
P W M A
P W M B
G P IO 0
G P IO 1
G P IO 2
G P IO 3
G P IO 4
G P IO 5
G N D
L IN K /T D O
/R E S E T
A C T /T C K
N C
A D C R E F
G N D
G N D
F ilte r
F ilte r
C C
8 0 2
R a d
M ic r o c
2 4
.1
io
o n
3 0
5 .4
a n d
tr o lle r
T X /R X
C o m b in e r
3 5
R F IO
1 8
1 9
G N D
2 0
G N D
2 1
U A R T _ R X
2 2
U A R T _ T X
2 3
N C
2 4
R E S E T
2 5
A D C X
2 6
A D C Y
2 7
A D C Z
2 8
G N D
2 9
S P I_ E N
3 0
S P I_ S C L K
3 1
S P I_ M O S I
3 2
S P I_ M IS O
3 3
G N D
3 4
G N D
3 6
G N D
Figure 1
ZMN2405 Hardware
The major hardware component of the ZMN2405 is
the CC2430 IEEE 802.15.4 compatible transceiver
with integrated 8051 microcontroller. The ZMN2405
operates in the frequency band of 2405 to 2480 MHz
at a nominal output power of 1 mW.
Two crystals are provided to operate the CC2430, a
32 MHz crystal for normal operation and a 32.768 kHz
crystal for precision sleep mode operation.
The ZMN2405 provides a variety of application hard-
ware interfaces including an SPI interface, UART
interface, three 12-bit ADC inputs, two PWM (DAC)
outputs, and six general purpose digital I/O ports.
ZMN2405 Firmware
The main firmware components in the ZMN2405
include the ZigBee protocol stack and RFM’s CSM
standard module application profile. The ZigBee proto-
col stack implements networking and security, with
underlying support from the 802.15.4 Media Access
Control (MAC) layer. The CSM profile provides an
application programming interface (API) for all the
ZMN2405 application hardware interfaces. The CSM
profile includes Network Discovery, Send/Receive
Serial Data, Read/Write SPI Port, Read ADC Inputs,
Write DAC Outputs, Read/Write GPIO and Module
Configuration services. In addition, the CSM profile
provides two sleep modes - timer sleep and interrupt
sleep. See the
ZMN2405 ZigBee Module Developer’s
Kit User’s Manual
for complete details of the CSM pro-
file API.
www.RFM.com E-mail: info@rfm.com
©2008 by RF Monolithics, Inc.
Page 3 of 6
ZMN2405 - 5/20/08
ZMN2405 I/O Pad Descriptions
Pad
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 - 20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Name
VCC
GND
PWMA
PWMB
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GND
LINK/DD
/RESET
ACT/DC
NC
ADC REF
GND
UART_RX
UART_TX
NC
/RESET
ADCX
ADCY
ADCZ
GND
SPI_EN
SPI_SCLK
SPI_MOSI
SPI_MISO
GND
GND
RFIO
GND
Power supply input, +3.3 to +5.5 Vdc.
Power supply and signal ground. Connect to the host circuit board ground.
Pulse-width modulated output A. Provides a DAC function when used with an external low-pass filter.
Pulse-width modulated output B. Provides a DAC function when used with an external low-pass filter.
Configurable digital I/O port 0. When configured as an output, the power-on state is also configurable.
Configurable digital I/O port 1. When configured as an output, the power-on state is also configurable.
Configurable digital I/O port 2. When configured as an output, the power-on state is also configurable.
Configurable digital I/O port 3. When configured as an output, this high current port can sink up to 20 mA. The
power-on output state is also configurable.
Configurable digital I/O port 4. When configured as an output, the power-on state is also configurable.
Configurable digital I/O port 5. When configured as an output, the power-on state is also configurable.
Power supply and signal ground. Connect to the host circuit board ground.
Output signal indicating module’s link status in default mode. Also used by JTAG interface as Data Output.
Active low hardware reset. Hold this input low when the power supply is below 2.7 V. In parallel with pad 24.
Output signal indicating RF data activity. Also used by JTAG interface as Data Clock Input.
No connection.
Module’s +3.3 V regulated supply, used for ratiometric ADC readings. Current drain on this output should be no
greater than 5 mA.
Power supply and signal grounds. Connect to the host circuit board ground.
Serial data input to UART.
Serial data output from UART.
No connection.
Active low hardware reset. Hold this input low when the power supply is below 2.7 V. In parallel with pad 13.
7- to 12-bit ADC input X. ADC full scale can be referenced to +3.3 V supply or internal +2.5 V reference.
7- to 12-bit ADC input Y. ADC full scale can be referenced to +3.3 V supply or internal +2.5 V reference.
7- to 12-bit ADC input Z. ADC full scale can be referenced to +3.3 V supply or internal +2.5 V reference.
Power supply and signal ground. Connect to the host circuit board ground.
Active-low enable output for SPI bus devices.
SPI port clock signal.
SPI port data output.
SPI port data input.
Power supply and signal ground. Connect to the host circuit board ground.
RF ground. Connect to the host circuit board ground plane, and to shield when using coaxial cable.
RF port. Connect the antenna to this port with a 50
Ω
stripline or semi-rigid coaxial cable.
RF ground. Connect to the host circuit board ground plane, and to shield when using coaxial cable.
Description
www.RFM.com E-mail: info@rfm.com
©2008 by RF Monolithics, Inc.
Page 4 of 6
ZMN2405 - 5/20/08
RFIO Stripline
The RFIO pad on the radio module is connected directly to an antenna on the host circuit board, or to an MMCX
or similar RF connector. It is important that this connection be implemented as a 50 ohm stripline. Referring to
Figure 3, the width of this stripline depends on the thickness of the circuit board between the stripline and the
Z M N 2 4 0 5 O u tlin e a n d M o u n tin g D im e n s io n s
1 .2 0 0
0 .0 9 0
1 8
0 .0 6 0
0 .0 3 0
S q u a re
1
0 .0 9 0
0 .7 9 0
0 .8 3 5
T o p V ie w
1 9
3 6
0 .0 9 5
Figure 2
groundplane. For FR-4 type circuit board materials (dielectric constant of 4.7), the width of the stripline is equal to
1.75 times the thickness of the circuit board. Note that other circuit board traces should be spaced away from the
stripline to prevent signal coupling, as shown in Figure 4. The stripline trace should be kept short to minimize its
insertion loss.
C ir c u it B o a r d S tr ip lin e T r a c e D e ta il
C o p p e r
S tr ip lin e
T ra c e
Trace Separation from
50 Ohm Microstrip
100 mil
150 mil
200 mil
250 mil
Length of Trace Run
Parallel to Microstrip
125 mil
200 mil
290 mil
450 mil
650 mil
C o p p e r
G ro u n d
P la n e
F R -4 P C B
M a te r ia l
300 mil
im p e d a n c e W
= 1 .7 5 * H
F o r 5 0 o h m
Figure 3
Figure 4
www.RFM.com E-mail: info@rfm.com
©2008 by RF Monolithics, Inc.
Page 5 of 6
ZMN2405 - 5/20/08
京公网安备 11010802033920号
EEWORLD
