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Cypress CY7C1486V25, CY7C1480V25, CY7C1482V25 manual Read/Write Cycle Timing21, 23

Models: CY7C1486V25 CY7C1482V25 CY7C1480V25

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CY7C1480V25

CY7C1482V25

CY7C1486V25

Switching Waveforms (continued)

Read/Write Cycle Timing[21, 23, 24]

tCYC

CLK

tCH tCL

tADS tADH

ADSP

ADSC

tAS tAH

ADDRESS

A1

A2

BWE, BWX

tCES tCEH

CE

ADV

OE

			tCO
Data In (D)	High-Z	t	tOEHZ
		t	tOEHZ
		CLZ
Data Out (Q)	High-Z	Q(A1)	Q(A2)
		Back-to-Back	READs

A3A4

tWES tWEH

tDS tDH

	tOELZ
D(A3)
	Q(A4)	Q(A4+1)	Q(A4+2)	Q(A4+3)
Single WRITE		BURST READ
DON’T CARE	UNDEFINED

A5A6

D(A5) D(A6)

Back-to-Back

WRITEs

Notes

23.The data bus (Q) remains in high-Z following a write cycle, unless a new read access is initiated by ADSP or ADSC.

24.GW is HIGH.

Document #: 38-05282 Rev. *H

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Cypress CY7C1486V25, CY7C1480V25, CY7C1482V25 manual Read/Write Cycle Timing21, 23

Contents

Features Functional Description1Selection Guide 250 MHz 200 MHz 167 MHz UnitLogic Block Diagram CY7C1480V25 2M x Logic Block Diagram CY7C1482V25 4M xLogic Block Diagram CY7C1486V25 1M x CLRPin Configurations Pin Tqfp Pinout CY7C1480V25 2M xCY7C1482V25 4M x CY7C1482V25 4M x DQ G DQ B DQ GDQ B DQP G DQP C DQP F DQP B DQ CPin Definitions Single Read Accesses Single Write Accesses Initiated by AdspFunctional Overview TDIInterleaved Burst Address Table Mode = Floating or VDD Linear Burst Address Table Mode = GNDZZ Mode Electrical Characteristics Truth Table Operation Add. UsedTruth Table for Read/Write FunctionTAP Controller State Diagram TAP Controller Block DiagramIeee 1149.1 Serial Boundary Scan Jtag Instruction Register TAP Instruction SetTAP AC Switching Characteristics Over the Operating Range9 TAP TimingParameter Description Min Max Unit Clock Output TimesTAP DC Electrical Characteristics And Operating Conditions 5V TAP AC Test Conditions8V TAP AC Test Conditions Parameter Description Test Conditions MinScan Register Sizes Identification CodesBoundary Scan Exit Order 2M x Boundary Scan Exit Order 4M x A11 A10P10 M10Boundary Scan Exit Order 1M x Electrical Characteristics Over the Operating Range12 Maximum RatingsOperating Range Range AmbientCapacitance14 Thermal Resistance14AC Test Loads and Waveforms Switching Characteristics Over the Operating Range15 Setup TimesParameter Description 250 MHz 200 MHz 167 MHz Unit Min Max Switching Waveforms Read Cycle Timing21Write Cycle Timing21 Read/Write Cycle Timing21, 23 ZZ Mode Timing25 DON’T CareOrdering Information 250 Package Diagrams Pin Thin Plastic Quad Flatpack 14 x 20 x 1.4 mmBall Fbga 15 x 17 x 1.4 mm Ball Fbga 14 x 22 x 1.76 mm Issue Date Orig. Description of Change Document HistoryDocument Number VKN/KKVTMP