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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

> - pull CS low

> - send WREN(0x06)

> - pull CS high

> - delay();

propose to insert the following lines, to check that the Flash "wants" to talk with you :-)

- pull CS low

- send RDSR (0x05)

- read 1 byte --> shout be 0x02 (=Write Enable Latch is set)

- pull CS high

Regards,

Heiko