CY28416
AC Electrical Specifications
Parameter
Description
Condition
Min.
Max.
Unit
Crystal
TDC
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
ꢀ
TPERIOD
XIN Period
When XIN is driven from an external clock
source
69.841
71.0
ns
TR / TF
TCCJ
XIN Rise and Fall Times
XIN Cycle to Cycle Jitter
Long-term Accuracy
Measured between 0.3VDD and 0.7VDD
As an average over 1-Ps duration
Over 150 ms
–
–
–
10.0
500
300
ns
ps
LACC
ppm
CPU at 0.7V
TDC
CPUT and CPUC Duty Cycle
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
40
60
ꢀ
ns
ns
ns
ns
ns
TPERIOD
TPERIOD
TPERIOD
TPERIOD
TPERIOD
100-MHz CPUT and CPUC Period
133-MHz CPUT and CPUC Period
166-MHz CPUT and CPUC Period
200-MHz CPUT and CPUC Period
266-MHz CPUT and CPUC Period
9.9970
7.4978
5.9982
4.9985
3.7489
10.003
7.5023
6.0018
5.0015
3.7511
TPERIODSS 100-MHz CPUT and CPUC Period, SSC Measured at crossing point VOX
TPERIODSS 133-MHz CPUT and CPUC Period, SSC Measured at crossing point VOX
TPERIODSS 166-MHz CPUT and CPUC Period, SSC Measured at crossing point VOX
TPERIODSS 200-MHz CPUT and CPUC Period, SSC Measured at crossing point VOX
TPERIODSS 266-MHz CPUT and CPUC Period, SSC Measured at crossing point VOX
9.9970 10.0533 ns
7.4978
5.9982
4.9985
3.7489
–
7.5400
6.0320
5.0266
3.7700
160
ns
ns
ns
ns
ps
TSKEW
Any CPUT/C to CPUT/C Clock Skew, Measured at crossing point VOX
SSC
TCCJ
TCCJ
TR / TF
TRFM
'TR
CPUT/C Cycle to Cycle Jitter
Measured at crossing point VOX
Measured at crossing point VOX
–
–
90
150
700
20
ps
ps
ps
ꢀ
CPU2/SRC4 Cycle to Cycle Jitter
CPUT and CPUC Rise and Fall Times Measured from VOL = 0.175 to VOH = 0.525V
175
–
Rise/Fall Matching
Determined as a fraction of 2*(TR – TF)/(TR + TF)
Rise Time Variation
Fall Time Variation
–
125
125
850
–
ps
ps
mv
mv
mv
V
'TF
–
VHIGH
VLOW
VOX
Voltage High
Math averages Figure 7
Math averages Figure 7
660
–150
250
–
Voltage Low
Crossing Point Voltage at 0.7V Swing
Maximum Overshoot Voltage
550
VOVS
VHIGH
0.3
+
VUDS
VRB
Minimum Undershoot Voltage
Ring Back Voltage
–0.3
–
–
V
V
See Figure 7. Measure SE
0.2
SRC
TDC
SRCT and SRCC Duty Cycle
Measured at crossing point VOX
Measured at crossing point VOX
45
55
ꢀ
TPERIOD
100-MHz SRCT and SRCC Period
9.9970
10.003
ns
TPERIODSS 100-MHz SRCT and SRCC Period, SSC Measured at crossing point VOX
9.9970 10.0533 ns
TSKEW
TCCJ
Any SRCT/C to SRCT/C Clock Skew
SRCT/C Cycle to Cycle Jitter
SRCT/C Long Term Accuracy
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
–
–
130
125
300
700
20
ps
ps
LACC
–
ppm
ps
TR / TF
TRFM
SRCT and SRCC Rise and Fall Times Measured from VOL = 0.175 to VOH = 0.525V
Rise/Fall Matching Determined as a fraction of 2*(TR – TF)/(TR + TF)
175
–
ꢀ
Rev 1.0,November 22, 2006
Page 11 of 14
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