256MB x16 bit IFC nor flash interface with T2080

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256MB x16 bit IFC nor flash interface with T2080

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kong
Contributor I

Hi All

 

I am using T2080 in my application. I planned to connect MT28FW02GBBA1HPC-0AAT
nor flash(16bits 256MB) to the IFC bus. I planned to use x16 bit external latch for address/date demux application. How to interface this devices, My flash is having 27bit addressing.

 I have connected like this whether this will work ?

IFC_A[16:31]    ->    A[15:0]

[IFC_AD[5:15] -> latch -> A[26:16]

IFC_AD[0:15]    <->    DQ[15:0]

IFC_CS0#    ->    CE#

IFC_OE#        ->    OE#

IFC_WE0#    ->    WE#

IFC_WP0#    ->    WP#

IFC_RB0#    ->    R/B#

1.8V        ->    VIO

3.3V        ->    VCC

 

Regards,

Kong

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alexander_yakov
NXP Employee
NXP Employee

From the T2080 side, each address value addresses one byte. As long as your flash is 16-bit, this means each address value in flash will address one 16-bit value (two bytes). To connect this flash, least significant address line IFC_A[31] should not be used for connection, least significant address bit, connected to flash A0 - should be IFC_A[30].

Also, flash WP# and R/B# should be pulled-up through pull-up resistors at flash side and not used for connection to IFC.


Have a great day,
Alexander
TIC

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496 Views
kong
Contributor I

Thanks a lot for your help ,Alexander. The situation is that my printed circuit board has been made, is there any way to remedy my fault now?

 

Regards,

Kong

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alexander_yakov
NXP Employee
NXP Employee

No, I do not see a way to fix this without board redesign

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