TAP AC Switching Characteristics, Hold Times | Cypress CY7C1474BV25

CY7C1470BV25

CY7C1472BV25, CY7C1474BV25

TAP AC Switching Characteristics

Over the Operating Range [9, 10]

Parameter	Description	Min	Max	Unit
Clock

tTCYC	TCK Clock Cycle Time	50		ns
tTF	TCK Clock Frequency		20	MHz
tTH	TCK Clock HIGH time	20		ns
tTL	TCK Clock LOW time	20		ns
Output Times
tTDOV	TCK Clock LOW to TDO Valid		10	ns
tTDOX	TCK Clock LOW to TDO Invalid	0		ns
Setup Times
tTMSS	TMS Setup to TCK Clock Rise	5		ns
tTDIS	TDI Setup to TCK Clock Rise	5		ns
tCS	Capture Setup to TCK Rise	5		ns
Hold Times

tTMSH	TMS Hold after TCK Clock Rise	5		ns
tTDIH	TDI Hold after Clock Rise	5		ns
tCH	Capture Hold after Clock Rise	5		ns

Notes

9.tCS and tCH refer to the setup and hold time requirements of latching data from the boundary scan register.

10.Test conditions are specified using the load in TAP AC Test Conditions. tR/tF = 1 ns.

Document #: 001-15032 Rev. *D

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Cypress CY7C1474BV25, CY7C1472BV25 TAP AC Switching Characteristics, Parameter Description Min Max Unit Clock, Hold Times

Contents

Description 250 MHz 200 MHz 167 MHz Unit FeaturesFunctional Description Selection Guide Logic Block Diagram CY7C1472BV25 4M x Logic Block Diagram CY7C1470BV25 2M x ADV/LD Logic Block Diagram CY7C1474BV25 1M x Pin Tqfp Pinout Pin Configurations Mode CENNC/1G CE2 CLK TDI TDO Ball Fbga 14 x 22 x 1.76 mm Pinout CY7C1474BV25 1M × TDI Pin Definitions Pin Name IO Type Pin DescriptionADV/LD Dqpx Functional Overview ZZ Mode Electrical Characteristics Burst Write AccessesParameter Description Test Conditions Min Max Unit Truth Table Address OperationUsed Function CY7C1474BV25 Partial Write Cycle DescriptionFunction CY7C1470BV25 Function CY7C1472BV25 Ieee 1149.1 Serial Boundary Scan Jtag TAP Controller State Diagram TAP Instruction Set TAP Timing TAP AC Switching Characteristics Parameter Description Min Max Unit ClockHold Times Scan Register Sizes Register Name Bit Size TAP DC Electrical Characteristics And Operating Conditions5V TAP AC Test Conditions GND ≤ VI ≤ Vddq Boundary Scan Exit Order 2M x Bit # Ball ID Identification Codes Instruction Description 10 R1 11 R2 12 R3 13 P2 Boundary Scan Exit Order 4M xBoundary Scan Exit Order 1M x Bit # Ball ID Range Ambient Electrical CharacteristicsMaximum Ratings Operating Range Parameter Description Test Conditions Tqfp Fbga Unit CapacitanceThermal Resistance AC Test Loads and Waveforms Output Times Switching CharacteristicsSetup Times Parameter Description 250 200 167 Unit Min Max A3 A4 Switching WaveformsADV/LD Address Data NOP, Stall and Deselect Cycles Ordering Information 250 Pin Thin Plastic Quad Flatpack 14 x 20 x 1.4 mm Package Diagrams Ball Fbga 15 x 17 x 1.4 mm Ball Fbga 14 x 22 x 1.76 mm Document History ECN No Issue Date Orig. of Change Description of Change