V-Chip Microsystems VT-CC1121-433M Manuel utilisateur

VT-CC1121-433M

VT-CC1121-433M Wireless

Wireless

Wireless Module

Module

User

User Guide

Guide

V-CHIP MICROSYSTEMS Co. Ltd

Address: Room 612-613, Science and Technology Service Center Building,

NO.1, Qilin Road, Nanshan District, Shenzhen, Guangdong

TEL ：0755-88844812

FAX ：0755-22643680

E-mail ：sales@digirf.com

Post Code ：518052

Web Site ：www.digiRF.com

VT-CC1121-APR-2012

VT-CC1121-433M

General

General Description

Description

VT-CC1121-433M is based on RF Transceiver CC1121 of TI Chipcon ，it

’

s a small size and ultra low power UHF

wireless module. CC1121 is fully integrated single-chip radio transceiver designed for high performance at very

low power and low voltage operation in cost effective wireless systems. The circuit is mainly intended for the

ISM (Industrial, Scientific and Medical) and SRD (Short Range Device) frequency bands at 164-192 MHz,

410-480 MHz and 820-960 MHz . The MAX RF output power can be set as high as +15dBm, with data rate as

high as 200Kbps. The module integrated many RF functions thus you can use it conveniently and reducing your

development time.

Features

�

433MHz wireless transceiver,

Frequency bands

at 170M/868M/915M/950MHz are customized

�Programmable baseband modulator with 2-FSK/2-GFSK/4-FSK/4-GFSK/MSK/OOK/ASK

�Programmable output power from -11 to +15dBm

�High receiver sensitivity down to -123dBm while 1.2kbps data rate

�Programmable data rate 1.2 ～200Kbps

�

Low power consumption and operating supply voltage ：2.0 ～3.6V DC

�

Point to point and point to multi-point communication.

�

Support carrier sense and digital RSSI output.

�Separate 128-byte RX and TX FIFOs

�High stability and industrial reliability

�Small dimension ：23.05mm × 15.06mm × 1.8 mm

Applications

�

Wireless Metering and Wireless Smart Grid (AMR and AMI)

�

Logistics Tracking System, Warehouse patrol, Electronic label

�Industrial monitoring and control

�AMR – Automatic Meter Reading

�Home and building automation

�Consumer Electronics products of wireless control

�

Wireless alarm and security systems

�

Wireless sensor networks

VT-CC1121-APR-2012

VT-CC1121-433M

General

General Characteristics

Characteristics

Test operating conditions ：Ta=25 ° C ，VCC=3.3V if nothing else stated.

Parameter

Parameter Type

Type

Type Condition/Note

Condition/Note

Operating supply voltage DC 2.0 ～3.6V

Frequency range 410-480MHz Programmable

Frequency accuracy ± 10ppm

Modulation format

2-FSK/4-FSK/2-GFSK/4-FSK/

MSK/OOK

Programmable

Transmit power -11 ～+15dBm Programmable

TX current consumption <50mA

Receiver sensitivity

-118dBm (1.2kbps)

Refer to data rate

RX current consumption <22mA

Sleep State current consumption <1uA

Data rate 0 ～200Kbps Programmable

Antenna impedance 50ohm

Operating voltage 2.0~3.6V

Operating temperature -20 ～+75 ° C

Storage temperature range -40 ～+125 ° C

Dimension 23.05 mm × 15.06 mm × 1.8mm See more in PCB description

Note

Note ：

1．The module transmission data rate will affect Transmission distance ,the higher the data rate , the closer the

distance, and the lower the receiving sensitivity .

2．The supply voltage to the module will affect TX power, in the operating supply voltage range, the lower the

voltage, the lower the TX power.

3．The module central frequency will change as the operating temperature change, use it under suggest temperature,

the module can work well.

4．The antenna will strongly affect the communication distance, please select matched antenna and connect it

correctly.

5．The module mount will affect the communication distance.

VT-CC1121-APR-2012

VT-CC1121-433M

PCB

PCB Description

Description

Pin Configuration

Configuration

Pin name

name

name Pin

Pin type

type

type Description

Description

VCC Power(Analog) DC 2.0-3.6V power supply

GND Ground

CS_N Digital In Chip select, active low

GDIO0 Digital I/O Data output ，configuration by register

SO/GPIO1

Digital I/O

Data output （SPI ）or GPIO

SCLK Digital In Clock input （SPI ）

SI Digital In Data input （SPI ）

GDIO2

Digital I/O

Data input/output ，configuration by register

GDIO3 Digital I/O Data input/output ，configuration by register

RESET_N Digital In Reset ，active low

ANT Antenna port Impedance 50ohm

VT-CC1121-APR-2012

VT-CC1121-433M

Circuit

Circuit Interface

Interface

Note

Note ：

The pin sequence above are not the actual pin sequence refer pin description. SPI, I/O interface should

connect with the MCU

’

s I/O pin in order to archive your functions. The circuit must be take ESD protect to

prevent damage module. Good RF performance determines on the module position, ground and antenna fixing.

Any question about the module please contact with the FAE engineer.

Configuration

Configuration Registers

Registers

The configuration of CC1121 can be done with software SmartRF Studio7. Complete descriptions of the registers

are given in the CC1121 datasheet. We can provide evaluation board and demo code to the customer to develop

and evaluate the module

’

s capability.

Dimension

VT-CC1121-APR-2012

VT-CC1121-433M

Antenna

We can provide antenna match to the module. And if there is some special requirements to satisfy, we can

coordinate with you to select antenna, match antenna to the module in order to make the product work well.

Some recommend antennas as the table below.

Spring

Spring antenna

antenna

antenna （Standard

Standard

Standard ）

Characteristic: small size, low cost, embedded

conveniently.

SMA

SMA rubber

rubber

rubber antenna

antenna

antenna （Optional

Optional

Optional ）

Characteristic: medium-scale, low cost, high gain

Magnetic

Magnetic Mount

Mount

Mount Antenna

Antenna

Antenna （Optional

Optional

Optional ）

Characteristic: high gain, Magnetic Mount ，

suitable for mount on iron box.

Note:

Note: Standard

Standard

Standard is

is for

for

for free,

free,

free, optional

optional

optional need

need

need another

another

another payment

payment

payment and

and

and the

the

the cost

cost

cost refer

refer

refer to

to the

the

the antenna

antenna

antenna price.

price.

VT-CC1121-APR-2012

VT-CC1121-433M

Questions

Questions and

and

and Answers

Answers

Description

Description Reason

Reason

Reason and

and

and Solution

Solution

Can ’ t

communication

1．The power supply connect not well, check the module VCC whether it is out of maximum

rating.

2．The signal line connect not well, check the module SPI interface.

3．The settings of the transmitter module and receiver module are not the same. Check these

modules ’ register configuration.

4．Signal block. If the transmitter work with a high TX power, and the receiver was put at a short

distance(<0.5m), maybe there is a signal block to make no communication.

Communication

distance is too

short

1．The application environment is too bad or the antenna is shield. Put the antenna to a better place

outside or higher throw a coaxial line , replace it with a higher gain antenna.

2．The work space contains a same frequency interference source, or a strong magnetic field

interference, power source disturbance. Try to change the carrier frequency or get far away from

the source of the disturbance.

3．The power supply is not strong. Check the voltage and the current whether it is enough.

High data error

1．The power supply ripple is too big, Change the power supply.

2．Check the module register configuration, it is recommended to set as the CC1121-datasheet.

3．There is a carrier frequency interference, change the channel.

4．The antenna unmatched to the module RF interface, change another matched antenna.

Development

Development Package:

Package:

1. CC1121 datasheet （CC1121.pdf ）

2. CC1121 register configuration tool （SmartRF Studio 7 v1.4.9.zip ）

3. CC1121 demo code (CC1121 Demo Code.rar ）

4. Hard ware tools （TI Chipcon Evaluation Board ）

Note

Note ：

1．

You

can

can get

get

get the

the

the development

development

development package

package

package above

above

above from

from

from the

the

the salesman

salesman

salesman when

when

when you

you

you order

order

order the

the

the module.

module.

2．As

As version

version

version update

update

update ，please

please

please refer

refer

refer to

to our

our

our latest

latest

latest development

development

development materials.

materials.

VT-CC1121-APR-2012

VT-CC1121-433M

IMPORTANT

IMPORTANT NOTICE

NOTICE

V-CHIP MICROSYSTEMS Co. Ltd (below called V-CHIP) reserve the right to make corrections,

modifications, enhancements, improvements, and other changes to its products and services at any time and

to discontinue any product or service without notice. Customers should obtain the latest relevant information

before placing orders and should verify that such information is current and complete.

V-CHIP warrants performance of its hardware products to the specifications applicable at the time of sale

in accordance with V-CHIP ’ s standard warranty.

V-CHIP does not warrant or represent that any license, either express or implied, is granted under any

V-CHIP patent right, copyright, mask work right, or other V-CHIP intellectual property right relating to any

combination, machine, or process in which V-CHIP products or services are used. Reproduction of V-CHIP

information in V-CHIP data books or data sheets is permissible only if reproduction is without alteration and

is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this

information with alteration is an unfair and deceptive business practice. V-CHIP is not responsible or liable

for such altered documentation. Information of third parties may be subject to additional restrictions. Resale

of V-CHIP products or services with statements different from or beyond the parameters stated by V-CHIP

for that product or service voids all express and any implied warranties for the associated V-CHIP product or

service and is an unfair and deceptive business practice. V-CHIP is not responsible or liable for any such

statements.

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