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Problem Interfacing Flash Memory via SPI

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Thread Starter

Flow

Joined May 30, 2010
37
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:?


Thanks in advance!
 
hgmjr

hgmjr

Joined Jan 28, 2005
9,027
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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