Cypress CY7C1357C TAP Timing, Parameter Description Min Max Unit Clock, Output Times, Hold Times

CY7C1355C

CY7C1357C

TAP Timing

12

Test Clock

(TCK)tTH

tTMSS tTMSH

Test Mode Select (TMS)

tTDIS tTDIH

Test Data-In (TDI)

3 4 5 6

tTL tCYC

tTDOV

tTDOX

	Test Data-Out
	(TDO)
	DON’T CARE	UNDEFINED
TAP AC Switching Characteristics Over the Operating Range[10, 11]
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
Set-up Times
tTMSS	TMS Set-Up to TCK Clock Rise	5		ns
tTDIS	TDI Set-Up to TCK Clock Rise	5		ns
tCS	Capture Set-Up 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:

10.tCS and tCH refer to the set-up and hold time requirements of latching data from the boundary scan register.

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

Document #: 38-05539 Rev. *E Page 13 of 28

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