• Avoid pull-down resistor
    How can I avoid pull-down resitors during reset and configure de C167CR manually? After reset the microcontroller I can see with the scope that data bus signal are not good, it falls down slowly and...
  • GPIO as Input Pull Up / Pull Down
    The reference manula says i can configure the STM32 GPIO as either Input pull-up or as Input-pull-down. But i do not see any register which configures this. Can anybody clarify this. Regards...
  • Output of an LED set using a pull-up resistor
    I just started working with the NXP LPC1768 in class and I'm struggling to understand how the internal pullup/down resistors are utilized. We have a program that changes the status(on/off) of one of...
  • Pullup Resistors
    I am writing a GPIO input object that reads the pinstate of GPIO port 0. I am putting in a feature where the different pull resistor states can be specified. They are done so with an enum type in the...
  • is there any pull up/down resisters required between MCP23S17 AND ULN2803A ?
    Hi, In one of my design i am using MCP23S17 IC, it is 16 I/O Expander, now i want to interface all pins to ULN2803A IC , Now my question is there any pull up/down resisters required between MCP23S17...