Cypress CY14B104LA Truth Table For SRAM Operations, For x8 Configuration, For x16 Configuration

PRELIMINARY

CY14B104LA, CY14B104NA

Truth Table For SRAM Operations

HSB should remain HIGH for SRAM Operations.

For x8 Configuration

CE	WE	OE	Inputs/Outputs[2]	Mode	Power
H	X	X	High Z	Deselect/Power down	Standby
L	H	L	Data Out (DQ0–DQ7);	Read	Active
L	H	H	High Z	Output Disabled	Active
L	L	X	Data in (DQ0–DQ7);	Write	Active

For x16 Configuration

CE	WE	OE	BHE	[3]	BLE	[3]	Inputs/Outputs[2]	Mode	Power
H	X	X	X		X		High-Z	Deselect/Power down	Standby
L	X	X	H		H		High-Z	Output Disabled	Active
L	H	L	L		L		Data Out (DQ0–DQ15)	Read	Active
L	H	L	H		L		Data Out (DQ0–DQ7);	Read	Active
							DQ8–DQ15in High-Z
L	H	L	L		H		Data Out (DQ8–DQ15);	Read	Active
							DQ0–DQ7in High-Z
L	H	H	L		L		High-Z	Output Disabled	Active
L	H	H	H		L		High-Z	Output Disabled	Active
L	H	H	L		H		High-Z	Output Disabled	Active
L	L	X	L		L		Data In (DQ0–DQ15)	Write	Active
L	L	X	H		L		Data In (DQ0–DQ7);	Write	Active
							DQ8–DQ15in High-Z
L	L	X	L		H		Data In (DQ8–DQ15);	Write	Active
							DQ0–DQ7in High-Z

Document #: 001-49918 Rev. *A Page 16 of 23

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