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spidriver.pdf instructions for SPI Flash should connect /HOLD #20

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dshadoff opened this issue Jul 9, 2019 · 0 comments
Open

spidriver.pdf instructions for SPI Flash should connect /HOLD #20

dshadoff opened this issue Jul 9, 2019 · 0 comments

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@dshadoff
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dshadoff commented Jul 9, 2019

While using SPIFlash to read/write FeRAM device MR45V100A, I found that JEDEC ID was identified as {0x00, 0x00, 0x00} 90-99% of the time when the /HOLD line (pin 7 on SOP package) was left unconnected (as is demonstrated in the spidriver.pdf instruction file).

The datasheet for the device implied that both loose wires (/WP and /HOLD) should be brought to a logic "high", but I found that the JEDEC ID required just bringing /HOLD high.

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