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The
MNDG-24 (ZUB-A1287) is a
compact and easy-to-use
USB dongle, supporting
ZigBee / IEEE 802.15.4
network applications as
well as proprietary
protocols. The ZUB-A1287
is based on the
AT90USB1287 controller
[1]
and the AT86RF230 2.4GHz
radio chip
[2]
from Atmel.
The
PC connection is handled
through the AT90USB1287
USB interface using
a
Virtual
COM
Port
mechanism.
The
rich feature set of
the AT86RF230 chip
allows the module to be
used with proprietary
protocols as well. The
AT90USB1287 serves as a
freely programmable
protocol controller. In
addition to the free
development software like
GCC and AVR Studio,
low-cost programmers are
available on the market. The
ZUB-A1287 is sold with
standard AT90USB1287
bootloader and RF Toolbox
tool
[3]
preflashed.
On
the bottom side there are
highly integrated SMD pads
to provide connection to
In-Circuits Application
Development Board (ADB)
[4]
.
The ZUB-A1287 snaps into
the ADB to connect the
JTAG pins, ISP pins and a
few IO pins.
Figure
1
. Block
Schematic
The
three LEDs located on the
MNDG-24 (ZUB-A1287) are
connected to port PC0-PC2
of AT90USB1287. The SPI
pins, TWI interface pins
and general radio pins are
mapped as shown in
Table 1
.
Table
1
. Pin
usage of ATUSB1287
|
Pin
Name
|
ATUSB1287
Port Location
|
|
AT86RF230
Serial Clock
SCK
|
PORTB.1
|
|
AT86RF230
Slave Select
SS
|
PORTB.0
|
|
AT86RF230
Master In Slave
Out MISO
|
PORTB.3
|
|
AT86RF230
Master Out Slave
In MOSI
|
PORTB.2
|
|
AT86RF230
Sleep and Transmit
SLP_TR
|
PORTB.4
|
|
AT86RF230
Reset /RST
|
PORTB.5
|
|
AT86RF230
Interrupt IRQ
|
PORTD.4
|
Table
2
.
Electrical Parameters of
the module
|
Parameter
Unit
|
Unit
|
Min
|
Typ
|
Max
|
Remarks
|
|
Supply
voltage
|
V
|
2.7
|
|
5.5
|
|
|
Temperature
|
|
|
storage
|
ฐC
|
-50
|
|
150
|
|
|
operating
|
ฐC
|
-40
|
|
85
|
|
|
Current
consumption
|
|
|
initial mode
|
mA
|
13
|
18
|
27
|
Depends
on USB actions
|
|
idle mode
|
mA
|
|
23
|
|
|
|
transmit mode
|
mA
|
|
28
|
|
|
|
receiving mode
|
mA
|
|
27
|
|
|
|
RF
|
See
AT86RF230 datasheet
[2]
and IEEE 802.15.4
specification
[5]
|
|
|
frequency
|
MHz
|
2405
|
|
2485
|
|
|
number of channels
|
|
|
16
|
|
|
|
20dB bandwidth per
channel
|
MHz
|
|
2.8
|
|
|
|
transmit power
|
dBm
|
-17
|
|
6
|
Adjustable
|
|
module receiver
sensitivity
|
dBm
|
-91
|
|
|
1%
PER
|
|
frequency tolerance
|
ppm
|
-40
|
|
40
|
|
|
measured range,
outdoor
|
m
|
|
|
100
|
Environmental coefficient =
2.05
|
|
measured range,
indoor
|
m
|
|
|
20
|
Environmental coefficient
=
3
|
Ordering
Information
Part
Number: 630000018
Product
: MNDG-EVB-24
Description: Compact and
Flexible 2.4GHz
IEEE802.15.4/ZigBee
USB Dongle for Wireless
Netw | 
