Others: hardware and software

Posted on July 11, 2017 at 12:56As per data sheet of LM339, the input voltage range is from -0.3V to 36V. We are using LM339 as a Comparator in our circuit , in certain cases, we have a voltage of -0.7V at Vin ( inverting). which is above the specification. Will it cause damage to Opam? What will be the behavior of Opam in this case? VCC is +24V and GND.

Posted on July 07, 2017 at 10:09Hello! When NAND02GW3B2CN6E had been discontinued? Thanks

Posted on July 06, 2017 at 10:10   During development of a driver for ISP1763a usb device (gadget) under Linux OS, I had some difficulties, which I hope you will help us solve. The driver ISP1763a works on the NOR interface in asynchronous multiplex mode, the bus 16 bit. Before I say that the driver for usb host ISP1763a works correctly. The driver problem is that only interrupts from the USB BRST (reset) and VBUS come, the USB endpoints do not appear, all the settings have been made according to the manual on your site (PM0070: ISP1763A programming guide). The sources used the driver for ISP1761 ( <LINK NO LONGER ACTIVE> and  <LINK NO LONGER ACTIVE> = Directory, as well as a clean driver for the usb device for isp1763a ), proceeded from the considerations that the ISP1761 controller is the same as And ISP1763a works on the basis of the controller ISP1582 (this situation is observed for each of these 3 drivers). In all these cases, the PCI interfac

Posted on July 02, 2017 at 15:18Where can I find documentation about ST L9101 chip? I found this part in motorcycle ECU. I have to check it. 

Posted on November 15, 2016 at 16:26Does anyone have it to share? I would like to test. Theres no eval version on pls website.

Posted on January 24, 2015 at 12:32I  want to know how to programm st10f273 in boot strap mode ,can anyone provide the procedure and connection diagram of the circuit?

Posted on July 31, 2016 at 15:46Hi , I have a ST10F273M that is ACCP=0; DFB8=ACFE at one address of IFlash, i put an unprotection routine ,  now how i can call this function in IFlash. I can not call that via Bootstrap mode, is possible ? Do possible config mcu with an Extrnal Flash such as AM29F400BB , and change EA Pin, for running code start from External Flash and then jump or call that function ???  please help me Very thanks

Posted on May 07, 2008 at 21:33Unaligned memory access works ?

Posted on June 21, 2017 at 09:10helloI am driving bipolar stepper motor using l6480. everything is fine motor is running excellent but the over current detection feature is working unpredictably. i have been disabled this feature then motor is working good, and there is confusion about the calculations of current threshold. in 'AN4355 Application note' it is written that 'IOCDth = VOCDth × Rds(ON)' which is contradicting the statement of datasheet of l6480, which says ' The L6480 measures the load current of each half-bridge sensing the VDS voltage of all the Power MOSFETs (Figure 12). When any of the VDS voltages rise over the programmed threshold'. i want to understand this OCD feature.

Posted on May 30, 2017 at 14:58Hi everyone! I wanted to use 'STPTIC-82G2' (BST tunable capacitor) in my project. I thereby needed its S-parameters to simulate its functioning but couldn't find the corresponding data file anywhere (in fact for none of the other tunable capacitors as well).Any idea about where I can find it, or, if possible, how to proceed without requiring the same?

Posted on May 28, 2017 at 13:25Hi,I am studying the automotive injector control circuit by using the old ECU.I need the ATIC39-B4 A2C08350 datasheet.Please send me the datasheet of the ATIC39-B4 A2C08350My email is mailto:sh-hong7@daum.net (or mailto:hsh5271@daum.net).Thank you for your hospitality.soohaeng hong/ south Korea

Posted on May 24, 2017 at 11:39Dear Sir/madam,There is available of ST92150JDV1QAuto development board int http://www.st.com. So, let me know is there any development board is available with controller.

Posted on March 25, 2017 at 19:28Hi:I have designed a smps using eDesignSuite with a VIPer38LE chip... the Power In is 11.1 watts, 96-144 Vac, 60hz and will run at 60KHZ.  Is there a method for determining the recommended filter components being X2 caps and the Common mode input choke?  Also the NTC?Thanks, Tom#common-mode-choke #ntc #x2 #emi-filter

Posted on May 09, 2017 at 14:59Hi,  Everyone!I'm Sorry about asking  PLC problem on STM32s MCU community.I have bought a PLC evaluation B'd that is STEVAL-IHP007V1 .And  make test enviroment like below.        PC <-- UART -->  STEVAL-IHP007V1  <---> AC Power LineI was installed  ST7580 GUI package on Window10 NotePC.The GUI connected to PC  via COM port.I tried to read status of  the STEVAL-IHP007V1  PLC module form GUI,But GUI  does not send any data to STEVAL-IHP007V1  PLC module.I was probe Tx line of COM port but  does not capture any siganls on the Scope.The GUI get Rx data from COM porWhat is problems on this.?Please help me,Thank  you#plc

Posted on April 13, 2017 at 11:43Please let me know if you have a replacement.#transistor #regulator

Posted on April 12, 2017 at 05:06The ECM on my 1987 Ford Bronco has a TO-220 component labelled 'SGS 28710 5101FG'.  I cannot find any information on waht this is.  Is there a description or datasheet available?  I need to replace this component with a current equivalent.

Posted on April 06, 2017 at 17:13ST product selector doesn't have a selection for JTAG port.  What bi-directional ST Micro TVS would be optimal for a JTAG port to use for ESD protection?  Looking for a part number please.  ST improving the website to put JTAG in it's TVS selector list would be appropriate, (wishful thinking for ST's website).

Posted on April 04, 2017 at 12:46Hello,im quite new to the STM32 ecosystem and i'm looking for a board to start my IoT project.I found the SWPF01SA module but it is not clear if it is what i want (can't fine much on GPIO).I assume it doesn't have an ADC so i looked for a dev board. But which one?Regards,#spwf #wifi

Posted on March 31, 2017 at 14:45Hello Everyone.. I have come across ST710F microcontroller in one of our old designs. I tried to find the information about this microcontroller but I have not found any information. Is this part obsolete? If it is obsolete, then what is closest replacement for this microcontroller. Can anyone reply to this as soon as possible?

Posted on March 24, 2017 at 15:03Smart Transformer Selector and eDesignSuiteUsers of https://my.st.com/analogsimulator/ can now integrate Würth Elektronik Midcom’s transformers in their designs.Thanks to a partnership with Würth Electronik Midcom, we integrated their http://www.we-online.com/sts into eDesignSuite. Designers can start a project in record time, and more easily move to prototyping, thanks to eDesignSuite’s ability to generate a complete bill of material, and show the performance of the circuit under different operating conditions. http://blog.st.com/edesignsuite-st-wurth-bring-just-transformers/...

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Posted on March 07, 2017 at 23:06HI:I've designed a SMPS with a viper controller, 3 outputs.  Is there a preferred way/tool to apply the design parameters to make an actual flyback transformer?  Magnetics has never been my strong area.Thanks!  Tom

Posted on March 13, 2017 at 14:32I've used the eDesignSuite to design a power supply using a VIPer38LE.  I'm verifying results and I'm having difficulty getting to the same primary inductance the design suite is.  Can someone get that info to me?  I am currently using the formulas in the Fairchild Application Note AN4137.Thank You!Tom

Posted on March 07, 2017 at 15:21HI:I'm using the eDesignSuite to design an AC/DC transformer that has a secondary at 135 vdc, 40 Iavg.  The listed turns ratio is 550.26m .... why the 'm' ?Here are the transformer details:Transformer Specifications: fsw: 60 kHz - Isat ≥ 982 mA - Lp: 1.62 mH ± 15 % - leakage ≤ 3 % Primary: Ipk 493 mA - Irms 201 mA - Iavg 123 mA Aux: Ipk 158 mA - Irms 16 mA - Iavg 3 mA - Prim/Aux turn ratio 5.64 Out 1: Ipk 198 mA - Irms 73 mA - Iavg 40 mA - Prim/Out 1 turn ratio 550.26 m Out 2: Ipk 5.93 A - Irms 1.99 A - Iavg 1 A - Prim/Out 2 turn ratio 19.79 Out 3: Ipk 581 mA - Irms 88 mA - Iavg 20 mA - Prim/Out 3 turn ratio 9.49Thanks!TomUpdate:  I see it now, just different than expected way for turns ratio.

Posted on February 25, 2017 at 23:11I am using ST's eDesign Suite for designing power supply. (AC-DC Converter)I contacted the transformer design firm to get my transformer designed. I gave them all the information regarding the number of turns and length of wire etc..Here is my power supply specsInput: 95 Vac - 265 Vac - 50 Hz - Operating Vdc [96.9 V - 374.8 V]Output Power: 14.96 WOutput -: 17 Vdc (38 mVpp ripple) - 880 mA max - 14.96 W - RegulatedSwitching Frequency (fsw): 60 kHzTransformer Specs :-  fsw: 60 kHz Prim/Aux turn ratio 6.39Prim/Out 1 turn ratio 4.77. (Np/Ns)Design Specs :- Type EE20/10/6 (EF20) TH-V 10-PinCore Gap: 0.28 mm expected   Primary: Turns 105 - Layers 6 - Paralleled wires 3   Secondary: Turns 22 - Layers 3 - Paralleled wires 3   Auxiliary: Turns 16Power Supply Layout :- AttachedNow I need to order the design for transformer and the transformer design centre asking for dot polarity/Start-End point of pins. According