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Altera_Forum's avatar
Altera_Forum
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17 years ago

Epcs4 interface problem

Hi, I am using EPCS4SI8N through SPI interface to a microcontroller to write and read data. Right now I have done the connections accordingly but have problems with read and write to the serial EE...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Hi,

Yeah the hold pin is high connected to 3.3V. I think my SPI protocol is correct since it worked fine with SD card.

I have done the following steps:

- pull CS low

- send WREN(0x06)

- pull CS high

- delay();

- pull CS low

-send WRITE(0x02)

- send address 1st byte (MSB)

- send address 2nd byte

- send address 3rd byte (LSB)

- send data

- pull CS high

- delay();

Even for read its done in a similar way but using read opcodes.

Thanks!