CY28416
Document #: 38-07657 Rev. *C Page 11 of 15
AC Electrical Specifications
Parameter Description Condition Min. Max. Unit
Crystal
T
DC
XIN Duty Cycle The device will operate reliably with input duty
cycles up to 30/70 but the REF clock duty cycle
will not be within specification
47.5 52.5 %
T
PERIOD
XIN Period When XIN is driven from an external clock
source
69.841 71.0 ns
T
R
/ T
F
XIN Rise and Fall Times Measured between 0.3V
DD
and 0.7V
DD
– 10.0 ns
T
CCJ
XIN Cycle to Cycle Jitter As an average over 1-µs duration – 500 ps
L
ACC
Long-term Accuracy Over 150 ms – 300 ppm
CPU at 0.7V
T
DC
CPUT and CPUC Duty Cycle Measured at crossing point V
OX
40 60 %
T
PERIOD
100-MHz CPUT and CPUC Period Measured at crossing point V
OX
9.9970 10.003 ns
T
PERIOD
133-MHz CPUT and CPUC Period Measured at crossing point V
OX
7.4978 7.5023 ns
T
PERIOD
166-MHz CPUT and CPUC Period Measured at crossing point V
OX
5.9982 6.0018 ns
T
PERIOD
200-MHz CPUT and CPUC Period Measured at crossing point V
OX
4.9985 5.0015 ns
T
PERIOD
266-MHz CPUT and CPUC Period Measured at crossing point V
OX
3.7489 3.7511 ns
T
PERIODSS
100-MHz CPUT and CPUC Period, SSC Measured at crossing point V
OX
9.9970 10.0533 ns
T
PERIODSS
133-MHz CPUT and CPUC Period, SSC Measured at crossing point V
OX
7.4978 7.5400 ns
T
PERIODSS
166-MHz CPUT and CPUC Period, SSC Measured at crossing point V
OX
5.9982 6.0320 ns
T
PERIODSS
200-MHz CPUT and CPUC Period, SSC Measured at crossing point V
OX
4.9985 5.0266 ns
T
PERIODSS
266-MHz CPUT and CPUC Period, SSC Measured at crossing point V
OX
3.7489 3.7700 ns
T
SKEW
Any CPUT/C to CPUT/C Clock Skew,
SSC
Measured at crossing point V
OX
– 160 ps
T
CCJ
CPUT/C Cycle to Cycle Jitter Measured at crossing point V
OX
–90ps
T
CCJ
CPU2/SRC4 Cycle to Cycle Jitter Measured at crossing point V
OX
– 150 ps
T
R
/ T
F
CPUT and CPUC Rise and Fall Times Measured from V
OL
= 0.175 to V
OH
= 0.525V 175 700 ps
T
RFM
Rise/Fall Matching Determined as a fraction of 2*(T
R
– T
F
)/(T
R
+ T
F
)– 20 %
∆T
R
Rise Time Variation – 125 ps
∆T
F
Fall Time Variation – 125 ps
V
HIGH
Voltage High Math averages Figure 7 660 850 mv
V
LOW
Voltage Low Math averages Figure 7 –150 – mv
V
OX
Crossing Point Voltage at 0.7V Swing 250 550 mv
V
OVS
Maximum Overshoot Voltage – V
HIGH
+
0.3
V
V
UDS
Minimum Undershoot Voltage –0.3 – V
V
RB
Ring Back Voltage See Figure 7. Measure SE – 0.2 V
SRC
T
DC
SRCT and SRCC Duty Cycle Measured at crossing point V
OX
45 55 %
T
PERIOD
100-MHz SRCT and SRCC Period Measured at crossing point V
OX
9.9970 10.003 ns
T
PERIODSS
100-MHz SRCT and SRCC Period, SSC Measured at crossing point V
OX
9.9970 10.0533 ns
T
SKEW
Any SRCT/C to SRCT/C Clock Skew Measured at crossing point V
OX
– 130 ps
T
CCJ
SRCT/C Cycle to Cycle Jitter Measured at crossing point V
OX
– 125 ps
L
ACC
SRCT/C Long Term Accuracy Measured at crossing point V
OX
– 300 ppm
T
R
/ T
F
SRCT and SRCC Rise and Fall Times Measured from V
OL
= 0.175 to V
OH
= 0.525V 175 700 ps
T
RFM
Rise/Fall Matching Determined as a fraction of 2*(T
R
– T
F
)/(T
R
+ T
F
)– 20 %
∆T
R
Rise Time Variation – 125 ps
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