Serial Flash Loader w/ Micron N25Qxxx Serial NOR Flash

If you want use N25Q256A/MT25Q512ABB in QUAD mode with ALTERA SERIAL FLASH CONTROLLER IP, EXTENDED QUAD INPUT FAST PROGRAM(12h) command is not supported, you can not program the device by this IP in QUAD mode, but STANDARD mode is compatible with EPCQ256.

Here is the differences between EPCQs and other options.

--------------------------------------------------------------------------------------------------

EXTENDED QUAD INPUT FAST PROGRAM required cmd-address-data => 1bit-4bit-4bit

-------------------------------------------------------------------------------------------------

Command Set
EPCQ256	N25Q256A83	N25Q256A13	MT25Q512ABB                 	
9E/9Fh	9E/9Fh	9E/9Fh	9E/9Fh	READ ID
06h	06h	06h	06h	WRITE ENABLE
05h	05h	05h	05h	READ STATUS REGISTER
0Bh	0Bh	0Bh	0Bh	FAST READ
EBh	EBh	EBh	EBh	(X4)QUAD INPUT/OUTPUT FAST READ
02h	02h	02h	02h	PAGE PROGRAM
12h	38h	n/a	3Eh	(X4)EXTENDED QUAD INPUT FAST PROGRAM
D8h	D8h	D8h	D8h	SECTOR ERASE
20h	20h	20h	20h	4KB SUBSECTOR ERASE

---------------------------------------------------------------------------

12h/38h 4-BYTE PAGE PROGRAM command is NOT SUPPORTED by N25Q256A13EF840x, this one is used in stratix V GX demo board.