Problem Interfacing Flash Memory via SPI

Discussion in 'Embedded Systems and Microcontrollers' started by Flow, Jul 17, 2010.

  1. Flow

    Thread Starter Member

    May 30, 2010
    37
    1
    Hey there,

    I'm having troubles interfacing an Atmega AT25DF321 to a MSP430.
    I have a dev board with the MSP430 and soldered up a board, see the attached schematic. There's like 5cm of wire between the boards.

    The output from the Flash, read by the MSP430 is constantly 0. If I omit the capacitors, I read the same value as I put out.

    What am I doing wrong here? Could it be that I damaged the MSP430 and/or the Flash by forgetting a Resistor to limit the current :rolleyes:?

    [​IMG]
    Thanks in advance!
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    The caps on the inputs to the U$2 seem a bit large. You could drop them to 1000 PF or eliminate them all together.

    hgmjr
     
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