Elektroda.com
Elektroda.com
X

Search our partners

Find the latest content on electronic components. Datasheets.com
Elektroda.com

Brief description of the 8-channel logic analyzer on the Cypress system

grala1 4371 21
This content has been translated flag-pl » flag-en View the original version here.
  • Hello.
    I would like to present you a short description of a cheap 8-channel logic analyzer based on the CY7C68013A microcontroller from Cypress.

    Brief description of the 8-channel logic analyzer on the Cypress system

    This device can be purchased from Chinese auction portals for about $ 7 with shipment or, for example, from a domestic auction site for about PLN 40 with shipment. At this price, we get an analyzer, USB cable and a colored 10-wire ribbon cable with BLS01 type connectors on both sides.

    Brief description of the 8-channel logic analyzer on the Cypress system Brief description of the 8-channel logic analyzer on the Cypress system Brief description of the 8-channel logic analyzer on the Cypress system

    With the help of this analyzer, we can view digital signals up to 5V.
    This device communicates with a computer via a USB port and Saleae Logic software. Here is a description of one of the forum members, what to change to use the USBee software:
    https://www.elektroda.pl/rtvforum/topic2644607.html

    Saleae software has the ability to analyze such protocols as: UART, I2C, SPI, 1-Wire, CAN, HD44780, JTAG, LIN, Manchester, Modbus and many others.
    Below I present the effects of viewing several protocols:
    - HD44780
    Continuous display of the text "Test UART" shown here:

    Brief description of the 8-channel logic analyzer on the Cypress system

    Analyzer settings for the tested protocol:

    Brief description of the 8-channel logic analyzer on the Cypress system

    - I2C
    Here we have the number "123" still being sent and a preview of the settings for this protocol.

    Brief description of the 8-channel logic analyzer on the Cypress system



    - SLEEPS
    In this case, the number "100" was still sent.

    Brief description of the 8-channel logic analyzer on the Cypress system

    Below are the settings for this protocol.

    Brief description of the 8-channel logic analyzer on the Cypress system

    - UART
    In turn, the text "TEST UART RS232" is sent here.

    Brief description of the 8-channel logic analyzer on the Cypress system

    Below are the settings for this protocol.

    Brief description of the 8-channel logic analyzer on the Cypress system

    Here we can choose in what form the characters decoded by the analyzer should be displayed - whether they should be ASCII, HEX, BIN or decimal characters.

    Brief description of the 8-channel logic analyzer on the Cypress system

    Below is an example where the state of the processor port is changed every 1ms, fed to the first channel of the tested analyzer.

    Brief description of the 8-channel logic analyzer on the Cypress system

    As you can see - the program shows us the duration of the high state (described here as width - W), frequency - f and period - T. As you can see - you can choose what the program should show.
    Here you can export what we have decoded to e.g. Excel or a text file.
    The maximum length of the tested samples is 1024 seconds, assuming that we are sampling at a frequency of 1MHz - the larger the sampling, the shorter the recording time of the tested sample.
    The captured sample can be both moved forward / backward and "zoomed in and out".
    After saving the tested sample, we have the option to enter the character into the "search engine" to check whether the character we are looking for exists in the sample we have read.
    You can start the sample recording by pressing the "START" button or by changing the options, eg to the possibility of automatic start after detecting, for example, a rising edge or a high state.
    Belongstake into account that the analyzer housing has incorrectly described channels in relation to Saleae Logic software, i.e. on the sticker we have counted channels from 1 to 8 and in the program they are counted from 0 to 7. It should be assumed that channel 1, according to the description from the housing, is a channel 0 in the program, 2 from the description on the housing is 1 in the program, etc.
    Unfortunately, during the test of this analyzer, I did not have access to an oscilloscope to be able to better test it, but I hope that this description will convince people who are considering purchasing this analyzer.
    Can you write similar article? Send message to me and you will get SD card 64GB.
    About Author
    grala1
    VAG group specialist
    Offline 
    grala1 wrote 9499 posts with rating 3981, helped 1363 times. Live in city Kalisz. Been with us since 2006 year.
  • #2
    androot
    VIP Meritorious for electroda.pl
    In fact, you showed more of Saleae Logic than the analyzer itself.
    You could see how it handles faster waveforms with 24MHz sampling.
  • #4
    androot
    VIP Meritorious for electroda.pl
    That's right, they did a great job making software that is very pleasant to use and has everything you need. Only that most of the devices used with it are clones from Ali ... p
  • #5
    oskar777

    Level 26  
    Let them block as effectively as possible, just as people have a clone and their software, thanks to the lack of a blockade, the original producer has a chance that if these Chinese are not enough for someone, they will buy the original.

    So people will start looking for other solutions, and as I see Ali there are many interesting alternatives. Prices can determine what their case wants, but nothing explains that their analyzer costs as much as an oscilloscope with an analyzer. The sly loses twice.
  • #6
    User removed account
    User removed account  
  • #7
    Krzysiek007
    Level 20  
    I think a specialist from the VAG group
    It should not promote an illegal version of the analyzer.
    The subject should go to the trash. Maybe we'll start asking for "clones" of full paid programs, colloquially known as crack / vitamin etc ?.
  • #8
    androot
    VIP Meritorious for electroda.pl
    Krzysiek007 wrote:
    I think a specialist from the VAG group
    It should not promote an illegal version of the analyzer.


    It doesn't. The topic is a description of the logic analyzer - it showed that it works. Other PC software can be used. Maybe the author also has the original Saleae device and therefore presented this Chinese based on it?
  • #9
    User removed account
    User removed account  
  • #10
    raus676
    Level 11  
    androot wrote:
    Only that most of the devices used with it are clones from Ali ... p

    Their newer products (Logic Pro) haven't been copied yet, and they're really cool and well-functioning devices.
  • #11
    User removed account
    Level 1  
  • #12
    User removed account
    User removed account  
  • #13
    User removed account
    User removed account  
  • #14
    User removed account
    User removed account  
  • #15
    User removed account
    User removed account  
  • #16
    User removed account
    User removed account  
  • #17
    sepako
    Level 14  
    Hello
    I am paying attention to the measurements with this analyzer for circuits with a voltage level of 5V, the input of the system is the HC245 buffer whose outputs are connected to the uC and the input is a resistor divider, in this case in the picture it is 100ohm for the input and 100k for Vcc. This system is powered by the voltage from the 3.3V stabilizer and the buffer inputs are protected by diodes connected to Vcc and GND. So, in the case of voltage levels up to 3.6V, the system does not load the system under test because the buffer has a large internal resistance, but for voltages above 3.8V the input is shorted to about 3.8V through a 100ohm resistor. This means that at a high state of 5V, a current of about 12mA will flow, and this may disturb some of the measured systems by "pulling" the measured voltage to the level of just about 3.8V.
  • #18
    Radzio M.
    Level 34  
    Has anyone seen an adapter for this, thanks to which you can connect + 24V signals? If it is ready, I will gladly buy it, if you don't have to do it yourself ;)
  • #19
    User removed account
    User removed account  
  • #20
    User removed account
    User removed account  
  • #21
    Radzio M.
    Level 34  
    I would like to use this toy as an industrial IO signal recorder. It would be nice if it had optoisolation with 24V input. I see it as an additional PCB plugged into this analyzer ;) . I used it often to work with uC.
  • #22
    User removed account
    User removed account