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Altera_Forum
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13 years ago

Weak pull-up setting in Q11 & Q12

Hi, I use EP4CGX50CF23I7 (CYCLONE IV GX) with SPI FLASH (MX25L1635E, VCC = 3,3V). The SPI FLASH output pin SO (SPI_MISO) connect through serial resistor 25[Om] with 2 input port: CPU (Intel Ato...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

I do not know how to explain it, but the problem was resolved by replacing the SPI flash memory.