Others: hardware and software

I got a Motorolla Charger (PSM4604A):This is the circuit:This adapter gives 4.2 V but i need a 5.2 V to charge my smartphone, so i have to rise this constant voltage. But here is a problem. On cold part of circuit there are 3 IC that doing something including voltage control. One of them with 6 pins. But other two, with 8 pins, are relative to each other. This one: And this one:This two Chip made by STMicro - B941 & B942 are sort of comparators maybe, or amplifiers. The one that lays on own vertical miniboard does the job of current protection(B941). The other lays on main motherboard(B942) doing Voltage Control. But I couldn't find datasheet of it. I think this mark B942 is not full, gotta have some other codes that helps to search datasheet. So if anybody can help please respond. Thanks in advance.

..

Not able to install PSDsoft tools on windows 10 machine. So that we are unable to download application into uPSD3234A with Keil and ULIKN2. ULINK2 was able to detect the target but debug settings are asking for PSDsoft project file(filename.ini). Could you please help me out on this.

Hi,We have been using the M24128 EEPROM IC on our access control products to store user data.I have attached the schematic of the chip below. There are 1k ohms pull ups to 3.3V on the SDA and SCL lines which are not shown in the image.Recently we found that one of out devices was malfunctioning in the field after operating fine for around 2 years. On debugging the hardware we found that the micro-controller was unable to communicate with the EEPROM. We saw that the commands were not being acknowledged by the EEPROM on the oscilloscope. The 9th bit of the clock cycle remained High. Have attached the waveform image below.We did continuity test, checked resistor values, searched for shorts but the the hardware seemed alright. We thought something internal to the chip must have gone wrong.But then accidentally while probing I touched the E2 pin to ground and the EEPROM started to acknowledge and communicate again. Going further we noticed that if we directly ground the any of the address p

We can assume that it is surrounded by room temperature air.

Kindly share the availability and sales office details.  Suppose you stopped the above product kindly recommend the equivalent product for the above part numbers

Hi All,I used for several years ST Visual Develop but today I have encountered this problem. When I try to open an existing workspace, STVD raises the error "Access to default.wed was denied". I've tried to remove the default.wed and another error: "Failed to launch child process: <gdb.exe>".Another strange behaviour is that when I'm opening a workspace, the extension .stw of the file is missing into the file type combo box ! Anyone knows why this happens? Two days ago everything worked well.Many thanksMassimiliano

..

..

The ST website indicates this part is Active. But distributors such as Mouser and Digikey indicate it is End-of-Life or Obsolete.Which is correct? Please take action to correct this discrepancy.

..

Hi, I have an ECU with a H-Bridgde of 4 A305 / LT30 populated at least one of the is broken.Can someone please provide a datasheet or recomment an alternative part?Thank you!Martin

HiThank you for replyI have three ST10F276 Boards in that One is completely not detected,second one detected once after that not detected, third one continuously detecting ,For your information All same boardsplease suggest Why I am getting this problem.And in one detected board I selected all banks and erased once is it disturb the bootstrap method?(in image I selected all bank and erased once)Thanks & RegardsEshwar

The minimum current value that can be measured with X-NUCLEO-IKA01A1 is given as 0.1 A in the datasheet. If I change the opam resistance, will I be left with harmonics?

I was using a "U210" STM32 USB (without a bootloader chip) to flash firmware on my device. Unfortunately, it appears that the pull up resistor got damaged. Please let me know if another USB drive can work such as DFU mode?

Hi all!I'm facing a problem to get the eeprom working since whenever i try to write a page (256 bytes) or partial page with HAL_Mem routines the read function seems to read at the beginning wrong informations.First of all i wish to clarify what eeprom code i've got on my board. In the figure below i'm seeing 24M02RD but the right name should be 24m02DR. Why? is the code correct? What does k737k mean?As you can see the SCL and SDA lines are pulled up with 10K resistors and the bus is shared among several devices where everyone has its own unique address.The device is supplied with a 3v3 voltage and uC used is STM32F429ZI. A2 phisycal address is tied to VSS.Clock speed is 100000 and APB1 is 42MHz APB2 is 84MHz .Before talking about my problem i want to say that during the tests the device has always answered with ACK and i2c peripheral had never got stuck with busy or hal_error codes. Furthermore the waveforms seems to be perfect with longer time than the eeprom datasheet requirements. (

..

Hello,I have developed an application which can dynamically detect source capabilities by reading the capabilities soon after a PD charger is plugged in. In order to renegotiate with the new PDO, I currently must issue a reset by writing to the RESET_CTRL register. Unfortunately, this approach causes VBUS to be lost momentarily, an undesirable side-effect.From browsing ST's example application source code, I noticed the use of "PdMessage_SoftReset", a way to soft reset the PD negotiation using the PD protocol. Seems simple enough: write the soft reset message 0x0D to the TX_header register at address 0x51, then write the send PD message command 0x26 to the address 0x1A.Unfortunately, I've had absolutely zero luck with this approach. I have tried with multiple different PD compliant chargers, neither of them renegotiate after issuing the soft reset message. I have also tried two separate STUSB4500 chips. I have tried writing the soft reset message as a single byte 0x0D, as well as writi

Here is my requirement for my USB-C powered system:I need 5 V @ >= 3 A.It doesn't really matter to me if the above is achieved from a USB PD contract in place, or if a non-PD USB-C Source is advertising 5 V @ 3A via a 10k pull-up.I don't want to use a micro controller.If I cannot get 5 V @ 3 A either from a non-PD USB-C or a USB PD contract, I do not want the  STUSB4500 to allow the rest of my system to power up. For example, if someone uses a USB-A legacy charger with a 56 kohm resistor (i.e. default USB power of 1 A) built into the cable: my device shouldn't be allowed power up.I see that Table 4 in the datasheet states a few configurations. I have a question about configuration 3. In this configuration, "POWER_OK2" asserts when a 3.0 A USB Type-C @ 5 V driver is attached (I believe it does this by detecting a 10k pull-up on one of the two CC pins). Will this pin also be asserted if a suitable power delivery contract (i.e. >= 3 A @ 5 V) is negotiated?If so, my plan is to u

HiActually I downloaded the ST10Flasher 2.4B and checked with ST10F276 Controllergetting the No acknowledge ErrorI have done P0L.4 to GND and P0L.5 to HIGH and did reset the controllerplease give me solution

which software used to upload ST10F276 controllerST10 Flasher 2.2 or ST10 Flasher 2.4B tool?Please guide me

I am working with VND5T016ASP-E high side driver. By looking at the datasheet in current sense section, it says Vsense is tested at Iout =20A with Rsense =3.9kohm. by calculation I am not getting anywhere closer to 5V which is given as min value but still regarded as Max analog sense output voltage . But, with the formula Vsense = (Iout/K)* Rsense, using K = 4200, I am getting 18.57V. May be I am missing a fair bit of information here. Any help would be appreciable.thanks

..

Working way: W and Hold is high, Other SPI BUS.First we send "RDSR" Command but MISO is low like no working, so I try send "WREN" and "WRSR"but is no working.

Dring this time, will there by any electrical flow in other pins like SDI/SDO. If there is electrical flow, then I am interested to know how big it is ?​