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Cypress CY7C1543V18 manual Switching Waveforms, Wps A D Qvld, Q Cq Cq, Read, Write, + Feedback

Models: CY7C1543V18 CY7C1556V18 CY7C1541V18 CY7C1545V18

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CY7C1541V18, CY7C1556V18

CY7C1543V18, CY7C1545V18

Switching Waveforms

Read/Write/Deselect Sequence [31, 32, 33]

Figure 5. Waveform for 2.0 Cycle Read Latency

NOP	READ	WRITE	READ	WRITE	NOP
1	2	3	4	5	6	7	8

tKH

tKL tCYC tKHKH

RPS
tSC tHC	t SC tHC

WPS

QVLD

A0	A1	A2		A3
tSA tHA	t	HD		tSD		tHD
tSA tHA	t SD	HD		tSD
	t SD
		D10	D11	D12	D13	D30	D31	D32	D33
	tQVLD
			tCO		tDOH			tCQDOH
		tCLZ	tCO			tCQD		tCQDOH
		tCLZ				tCQD

tQVLD

tCHZ

Q

Q00Q01Q02 Q03Q20 Q21 Q22Q23

(Read Latency = 2.0 Cycles)			t
		tCQOH	CCQO

tCQH tCQHCQH		t	CCQO
	tCQOH

DON’T CARE

UNDEFINED

Notes

31.Q00 refers to output from address A0. Q01 refers to output from the next internal burst address following A0, that is, A0+1.

32.Outputs are disabled (High-Z) one clock cycle after a NOP.

33.In this example, if address A2 = A1, then data Q20 = D10, Q21 = D11, Q22 = D12, and Q23 = D13. Write data is forwarded immediately as read results. This note applies to the whole diagram.

Document Number: 001-05389 Rev. *F

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Cypress Switching Waveforms, Wps A D Qvld, Q Cq Cq, CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18, Read, Write

Contents

Features ConfigurationsCY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18 Functional DescriptionLogic Block Diagram CY7C1541V18 Logic Block Diagram CY7C1556V18CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18 + FeedbackLogic Block Diagram CY7C1543V18 Logic Block Diagram CY7C1545V18CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18 + FeedbackPin Configuration 165-Ball FBGA 15 x 17 x 1.4 mm PinoutCY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18 Pin Configuration continued CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18165-Ball FBGA 15 x 17 x 1.4 mm Pinout CY7C1543V18, CY7C1545V18 CY7C1541V18, CY7C1556V18Pin Definitions CY7C1543V18, CY7C1545V18 Pin Definitions continuedCY7C1541V18, CY7C1556V18 CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18 Functional OverviewRead Operations Write OperationsValid Data Indicator QVLD Application ExampleDepth Expansion Programmable ImpedanceTruth Table Write Cycle DescriptionsCY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18 NWS0CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18 Write Cycle DescriptionsWrite Cycle Descriptions Disabling the JTAG Feature Test Access Port-Test ClockPerforming a TAP Reset IEEE 1149.1 Serial Boundary Scan JTAGSAMPLE Z SAMPLE/PRELOADBYPASS EXTESTTAP Controller State Diagram CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18Page 14 of TAP Controller Block Diagram TAP Electrical CharacteristicsCY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18 TAP AC Switching Characteristics TAP Timing and Test ConditionsCY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18 Identification Register Definitions Scan Register SizesInstruction Codes CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18Boundary Scan Order CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18Power Up Sequence in QDR-II+ SRAM Power Up SequenceDLL Constraints K K VDD/VDDQ DOFFElectrical Characteristics DC Electrical CharacteristicsMaximum Ratings Operating RangeElectrical Characteristics continued AC Electrical CharacteristicsCapacitance DC Electrical CharacteristicsThermal Resistance CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18Package Switching Characteristics CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18Parameter Switching Waveforms WPS A D QVLDQ CQ CQ CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18Ordering Information CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18Ordering Information continued CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18Package Diagram CY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18Figure 6. 165-ball FBGA 15 x 17 x 1.4 mm + FeedbackDocument History Page ISSUECY7C1541V18, CY7C1556V18 CY7C1543V18, CY7C1545V18 Document Number

Switching Waveforms

READ

WRITE

WPS

Q