Cypress CY7C1442AV33, CY7C1446AV33 TAP AC Switching Characteristics Over the operating Range10

CY7C1440AV33

CY7C1442AV33

CY7C1446AV33

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

3.3V TAP AC Test Conditions

Input pulse levels	VSS to 3.3V
Input rise and fall times	1ns
Input timing reference levels	1.5V
Output reference levels	1.5V
Test load termination supply voltage	1.5V

2.5V TAP AC Test Conditions

Input pulse levels	VSS to 2.5V
Input rise and fall time	1 ns
Input timing reference levels	1.25V
Output reference levels	1.25V
Test load termination supply voltage	........1.25V

3.3V TAP AC Output Load Equivalent				2.5V TAP AC Output Load Equivalent
		1.5V				1.25V
			50Ω				50Ω
TDO				TDO
	ZO= 50Ω		20pF		ZO= 50Ω		20pF

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 #: 38-05383 Rev. *E Page 14 of 31

[+] Feedback