Cypress CY7C1356C manual Partial Write Cycle Description2, 3, 4, Sleep Mode, Function CY7C1354C

CY7C1354C

CY7C1356C

Truth Table[2, 3, 4, 5, 6, 7, 8]

	Address
Operation	Used	CE	ZZ	ADV/LD	WE	BWx	OE	CEN	CLK	DQ
NOP/WRITE ABORT (Begin Burst)	None	L	L	L	L	H	X	L	L-H	Tri-State
WRITE ABORT (Continue Burst)	Next	X	L	H	X	H	X	L	L-H	Tri-State
IGNORE CLOCK EDGE (Stall)	Current	X	L	X	X	X	X	H	L-H	-
SLEEP MODE	None	X	H	X	X	X	X	X	X	Tri-State

Partial Write Cycle Description[2, 3, 4, 9]

Function (CY7C1354C)			d		c		b		a
	WE	BW		BW		BW		BW
Read	H	X		X		X		X
Write –No bytes written	L	H		H		H		H
Write Byte a – (DQa and DQPa)	L	H		H		H		L
Write Byte b – (DQb and DQPb)	L	H		H		L		H
Write Bytes b, a	L	H		H		L		L
Write Byte c – (DQc and DQPc)	L	H		L		H		H
Write Bytes c, a	L	H		L		H		L
Write Bytes c, b	L	H		L		L		H
Write Bytes c, b, a	L	H		L		L		L
Write Byte d – (DQd and DQPd)	L	L		H		H		H
Write Bytes d, a	L	L		H		H		L
Write Bytes d, b	L	L		H		L		H
Write Bytes d, b, a	L	L		H		L		L
Write Bytes d, c	L	L		L		H		H
Write Bytes d, c, a	L	L		L		H		L
Write Bytes d, c, b	L	L		L		L		H
Write All Bytes	L	L		L		L		L

Partial Write Cycle Description[2, 3, 4, 9]

Function (CY7C1356C)			b		a
	WE	BW		BW
Read	H	x		x
Write – No Bytes Written	L	H		H
Write Byte a − (DQa and DQPa)	L	H		L
Write Byte b – (DQb and DQPb)	L	L		H
Write Both Bytes	L	L		L

Note:

9. Table only lists a partial listing of the byte write combinations. Any combination of BWX is valid. Appropriate write will be done based on which byte write is active.

Document #: 38-05538 Rev. *G Page 9 of 28

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