1. T

    Diode usage in SPI modules

    Hi All, Hoping that someone can put me out of my misery. I have been searching the internet for the past 5days for an answer to this question and feel like I am starting to lose my mind. Can anyone explain why the attached schematic has a 1N4148 on each of the SDI_5V, SCLK_5V and CS_5V lines...
  2. dignificent

    How to measure continuity of a single QFN without powering entire board?

    QFN Device in-question * https://www.digikey.com/en/products/detail/MCP2515T-I-ML/MCP2515T-I-MLCT-ND/2601600?utm_campaign=allaboutcircuits&utm_medium=aggregator&curr=usd&utm_source=octopart Data-Read-Outs I want to test for seen on page 67 *...
  3. M

    How measure(Voltage reference points) SPI flash Data Output parameters (tCLQV,tCLQX)

    Hi, we are using MT25QU256ABA8ESF SPI flash as boot flash. It operates in QPI mode @ 120Mhz. As part of DVT we are measuring timing parameters for both Data Input & Data Output at Flash pins (No option to measure at the controller pins). Data Input parameters tDVCH(setup), tCHDX(hold) are...
  4. W

    Problem: Raspberry Pi to NXP MPC5744p over SPI

    Hello, I am currently trying to get SPI data transfer between the MPC5744p and a Raspberry Pi 4 to work. I'm using the SPIdev python toolkit to send the value 26 over to the MPC, using the attached SPItest.py script. To receive this, i've modified the code of the SPI_MPC5744P example to only...
  5. danwastheman

    How to use an STM32 to flash a bios chip with a bin or hex file?

    My old PC motherboard's bios chips were corrupted and it's an old 1155 socket so there were no available replacements. I believe I have the necessary tools to attempt to erase and reprogram the chip, but I'm not sure what I need to do. There isn't much STM32 resources online to guide me...
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