NOR flash RY/BY signal and EMA_WAIT(0) - does this need to be connected ?

Boris Fennema

Dear All.

We are using a NOR flash from Micron (M29W256G) which has a #RY/BY (ready busy) output -

We are planning to boot from this Flash.

Used the guidelines from TI on how to connect a NOR flash to an OMAP as per

which does not mention the EMA_WAIT,

Micron say that they will indicate Busy when erasing etc,

Should we connect the EMA_WAIT to RY/BY ? Is it essential or can we get by without it.

Any thoughts ?

0 Mukul Bhatnagar over 12 years ago

I would say it is optional. Additionally the on chip ROM boot loader for NOR boot mode, also does not use EMA_WAIT signal.

0 Boris Fennema over 12 years ago in reply to Mukul Bhatnagar

Thanks - that confirms our thoughts also.

Best regards.

Boris.

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