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Cypress CY7C1480V25, CY7C1486V25, CY7C1482V25 manual Switching Waveforms, Read Cycle Timing21

Models: CY7C1486V25 CY7C1482V25 CY7C1480V25

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CY7C1480V25

CY7C1482V25

CY7C1486V25

Switching Waveforms

Read Cycle Timing[21]

tCYC

CLK

tCH

tADS tADH

ADSP

ADSC

tAS tAH

tCL

tADS tADH

ADDRESS

GW, BWE, BWx

A2	A3
tWES tWEH	Burst continued with
tWES tWEH	new base address

ADV

Data Out (Q)

tCES tCEH

	tADVS	tADVH
				ADV
				suspends
				burst.
		tOEV	tCO
	tOEHZ	tOELZ	tDOH
	tCLZ
High-Z	Q(A1)		Q(A2)	Q(A2 + 1)	Q(A2 + 2)	Q(A2 + 3)
	tCO
	Single READ				BURST READ
			DON’T CARE	UNDEFINED

Deselect cycle

tCHZ

Q(A2)

Q(A2 + 1)

Burst wraps around to its initial state

Note

21. On this diagram, when CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH or CE2 is LOW or CE3 is HIGH.

Document #: 38-05282 Rev. *H

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Cypress CY7C1480V25, CY7C1486V25, CY7C1482V25 manual Switching Waveforms, Read Cycle Timing21

Contents

Selection Guide FeaturesFunctional Description1 250 MHz 200 MHz 167 MHz Unit Logic Block Diagram CY7C1480V25 2M x Logic Block Diagram CY7C1482V25 4M x Logic Block Diagram CY7C1486V25 1M x CLR CY7C1480V25 2M x Pin Configurations Pin Tqfp PinoutCY7C1482V25 4M x CY7C1482V25 4M x DQ B DQP G DQP C DQ G DQ BDQ G DQP F DQP B DQ C Pin Definitions Functional Overview Single Read AccessesSingle Write Accesses Initiated by Adsp TDI Linear Burst Address Table Mode = GND Interleaved Burst Address Table Mode = Floating or VDDZZ Mode Electrical Characteristics Truth Table Operation Add. Used Truth Table for Read/Write Function TAP Controller Block Diagram TAP Controller State DiagramIeee 1149.1 Serial Boundary Scan Jtag Instruction Register TAP Instruction Set Parameter Description Min Max Unit Clock TAP AC Switching Characteristics Over the Operating Range9TAP Timing Output Times 8V TAP AC Test Conditions TAP DC Electrical Characteristics And Operating Conditions5V TAP AC Test Conditions Parameter Description Test Conditions Min Identification Codes Scan Register SizesBoundary Scan Exit Order 2M x P10 Boundary Scan Exit Order 4M xA11 A10 M10 Boundary Scan Exit Order 1M x Operating Range Electrical Characteristics Over the Operating Range12Maximum Ratings Range Ambient Thermal Resistance14 Capacitance14AC Test Loads and Waveforms Setup Times Switching Characteristics Over the Operating Range15Parameter Description 250 MHz 200 MHz 167 MHz Unit Min Max Switching Waveforms Read Cycle Timing21 Write Cycle Timing21 Read/Write Cycle Timing21, 23 ZZ Mode Timing25 DON’T Care Ordering Information 250 Package Diagrams Pin Thin Plastic Quad Flatpack 14 x 20 x 1.4 mm Ball Fbga 15 x 17 x 1.4 mm Ball Fbga 14 x 22 x 1.76 mm Document History Issue Date Orig. Description of ChangeDocument Number VKN/KKVTMP