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CY7C1471BV25
CY7C1473BV25, CY7C1475BV25
Document #: 001-15013 Rev. *E Page 16 of 30
2.5V TAP AC Test Conditions
Input pulse levels.................................................V
SS
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
TAP AC Switching Characteristics
Over the Operating Range
[9, 10]
Parameter Description Min Max Unit
Clock
t
TCYC
TCK Clock Cycle Time 50 ns
t
TF
TCK Clock Frequency 20 MHz
t
TH
TCK Clock HIGH Time 20 ns
t
TL
TCK Clock LOW Time 20 ns
Output Times
t
TDOV
TCK Clock LOW to TDO Valid 10 ns
t
TDOX
TCK Clock LOW to TDO Invalid 0 ns
Setup Times
t
TMSS
TMS Setup to TCK Clock Rise 5 ns
t
TDIS
TDI Setup to TCK Clock Rise 5 ns
t
CS
Capture Setup to TCK Rise 5 ns
Hold Times
t
TMSH
TMS Hold after TCK Clock Rise 5 ns
t
TDIH
TDI Hold after Clock Rise 5 ns
t
CH
Capture Hold after Clock Rise 5 ns
Figure 6. 2.5V TAP AC Output Load Equivalent
TDO
1.25V
20pF
Z = 50Ω
O
50Ω
TAP DC Electrical Characteristics And Operating Conditions
(0°C < T
A
< +70°C; V
DD
= 2.375 to 2.625 unless otherwise noted)
[11]
Parameter Description Test Conditions Min Max Unit
V
OH1
Output HIGH Voltage I
OH
= –1.0 mA, V
DDQ
= 2.5V 2.0 V
V
OH2
Output HIGH Voltage I
OH
= –100 µA, V
DDQ
= 2.5V 2.1 V
V
OL1
Output LOW Voltage I
OL
= 1.0 mA, V
DDQ
= 2.5V 0.4 V
V
OL2
Output LOW Voltage I
OL
= 100 µA, V
DDQ
= 2.5V 0.2 V
V
IH
Input HIGH Voltage V
DDQ
= 2.5V 1.7 V
DD
+ 0.3 V
V
IL
Input LOW Voltage V
DDQ
= 2.5V –0.3 0.7 V
I
X
Input Load Current GND < V
IN
< V
DDQ
–5 5 µA
Notes
9.t
CS
and t
CH
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. t
R
/t
F
= 1 ns.
11.All voltages refer to V
SS
(GND).
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