MMcc1000_en.pdf
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MMcc1000
Minimodule for radio communication
User’s
Guide
R
Many ideas one solution
REV 1
Introduction
MMcc1000
is a miniature, complete transmission-reception module
(transceiver) designed around the CC1000 device from Chipcon. The module
works in the free-access ISM 433 MHz frequency band and it contains all
elements for its operation, except the antenna. It is possible to deliver the
module for operation in the 888 and 915 MHz bands.
The use of a complete, ready-to–operate module frees the designer from the
necessity to develop that part of a system which works on radio frequencies
and to complete the necessary elements. Thus, designing systems employing
wireless communications becomes a quick and simple process.
The module is delivered with exemplary software, written in C language,
which performs the initiation of the transceiver and data transmission. An
evaluation kit is also available.
The CC1000 device is a single-chip UHF transceiver designed for applications
requiring low power-drain and a low supply voltage. It can be used at
frequencies in the 300-1000 MHz region. Detailed specifications of the
CC1000 device can be found the manufacturer’s website: www.chipcon.com
The
MMcc1000
communicates with the microcontroller unit through two
synchronous serial interfaces: one of them is used to configure the circuit and
the other to transmit data via the radio link.
The
MMcc1000
can be used both for prototype work, eliminating the need to
design a printed circuit board, and for final designs on which the minimodule
is applied as a “sandwich”.
Features
·
a complete, ready-for use module
·
small dimensions
·
horizontal mounting
·
operation in the 433 MHz band
·
range up to approx. 2000 m
·
transmission rate to 76.8 kBaud
·
low supply voltage: 2.1 – 3.6 V
·
low power consumption
·
output power programmable between –20 and 10 dBm
·
high sensitivity: -110 dBm @ 2.4 kBaud
·
RSSI output signal (Received Signal Strength Indicator)
·
transmission and reception frequencies programmed with 250 Hz steps
(independently)
·
does not require tuning
·
software available for easy generation of configuration data
2
Example applications
·
alarm systems
·
automation
·
telemetry
·
remote control
·
toys
Description of terminals
All signals necessary for communication with the minimodule, supply voltages and antenna
input/output terminals are lead out to two SIL6 pin connectors. The module is designed for
horizontal mounting; it can be soldered to a circuit board or placed in an appropriate socket.
Connector J1:
1
PALE
Programming address latch enable for 3-wire bus
2
PDATA
Programming data for 3-wire bus. Programming data input for
write operation, programming data output for read operation
3
PCK
Programming clock for 3-wire bus
4
DCLK
Data clock for data in both receive and transmit mode
5
DIO
Wejcie danych (tryb nadawania), wyjcie danych (tryb odbioru)
6
CHP
Charge pump current output. The pin can also be used as PLL Lock
indicator. Output is high when PLL is in lock
Connector J2:
1
GND
Ground
2
ANT
Radio signal I/O
3
GND
Ground
4
VCC
Supply voltage input
5
RSSI
Received signal strength indicator or 10.7 MHz IF output to optional
external IF and demodulator
6
GND
Ground
3
Connection with the microprocessor system
The connection with a microcontroller is achieved with the use of five lines. Three of them
form the interface used to configure the CC1000 system (setting such parameters as:
transmission/reception frequency, output power, operating mode etc.). This interface
includes a bi-directional data line (data can be sent to from the circuit), a clock line
(controlled by the microprocessor) and an enable line. The remaining two lines form an
interface for data transmitted by radio; they are: a bi-directional data line and a clock line.
In the case of this interface, the transmission is synchronized by the CC1000 (both during
transmission and reception), therefore this signal should be connected to the interrupt input
of the microcontroller. In addition, the RSSI signal can be fed to the analog input of the
microcontroller – this will allow to measure the level of the received signal.
ANT
1
2
3
4
A
A
AINX
signal strength measure
MMcc1000
6
6
CHP
GND
5
5
GND
VCC
B
B
PX. X
INTX
DIO
RSSI
4
4
DCLK
VCC
3
3
data bus
PCLK
GND
2
2
PX. X
PX. X
PX. X
PDATA
ANT
C
C
1
1
PALE
GND
J1
J2
GND
MMcc1000
config. bus
D
D
'51, AVR...
1
2
3
4
Antenna
The MMcc1000 module can used with antennas of various kind, having an impedance of 50
ohms. In the simplest case, the antenna could be a 16.4 cm length of wire (approximating a
quarter wave). Such an antenna should be soldered as close as possible to the module
terminals, on the module itself at best (after removing pin 2 in the J2 connector). In this
case one should expect a range up to tens of meters (inside a building). If there is need to
extend the distance of the antenna, the connection should be made by coaxial cable with a
characteristic impedance of 50 ohms.
Technical parameters with Vcc= 3 V and at 25ºC
Parameter
Value
Sensitivity @ 2.4 kBaud
-110 dBm
Maximum output power
10 dBm
Frequency accuracy
+/- 10 ppm
Power consumption, transmission with full power
24 mA
Power consumption, transmission with minimal power
5 mA
Power consumption during reception
9.7 mA
Average supply current in receiving mode with 1:100 pooling
74 uA
Current consumption in sleep mode
100 nA
Transmission speed
0.6 – 76.8 kBaud
FSK frequency separation
0 – 65 kHz
Harmonics level
< -30 dBm
4
Dimensions
Assembly drawing
MMcc1000
Top view
Technical assistance
For technical assistance, please contact us at: support@propox.com. Please provide the
following data:
·
MMcc1000 minimodule version
·
Microprocessor type and clock frequency
·
Detailed description of the problem
5
Plik z chomika:
mikroprocesory
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