CY28RS400
AC Electrical Specifications (continued)
Parameter
Description
Condition
Min.
Max.
Unit
TPERIOD
XIN Period
When XIN is driven from an external
clock source
69.841
71.0
ns
TR / TF
XIN Rise and Fall Times
Measured between 0.3VDD and
0.7VDD
–
10.0
ns
TCCJ
XIN Cycle to Cycle Jitter
Long-term Accuracy
As an average over 1-Ps duration
–
–
500
300
ps
LACC
Over 150 ms
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
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
Measured at crossing point VOX
Measured at crossing point VOX
45
55
%
TPERIOD
TPERIOD
TPERIOD
TPERIOD
TPERIODSS
TPERIODSS
TPERIODSS
TPERIODSS
100-MHz CPUT and CPUC Period
133-MHz CPUT and CPUC Period
200-MHz CPUT and CPUC Period
266-MHz CPUT and CPUC Period
100-MHz CPUT and CPUC Period, SSC
133-MHz CPUT and CPUC Period, SSC
200-MHz CPUT and CPUC Period, SSC
266-MHz CPUT and CPUC Period, SSC
9.997001 10.00300 ns
7.497751 7.502251 ns
4.998500 5.001500 ns
3.748875 3.751125 ns
9.997001 10.05327 ns
7.497751 7.539950 ns
4.998500 5.026634 ns
3.748875 3.769975 ns
9.912001 10.08800 ns
7.412751 7.587251 ns
4.913500 5.086500 ns
3.663875 3.836125 ns
TPERIODAbs 100-MHz CPUT and CPUC Absolute period
TPERIODAbs 133-MHz CPUT and CPUC Absolute period
TPERIODAbs 200-MHz CPUT and CPUC Absolute period
TPERIODAbs 266-MHz CPUT and CPUC Absolute period
TPERI-
100-MHz CPUT and CPUC Absolute period,
SSC
9.912001 10.13827 ns
7.412751 7.624950 ns
4.913500 5.111634 ns
3.663875 3.854975 ns
ODSSAbs
TPERI-
133-MHz CPUT and CPUC Absolute period,
SSC
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
ODSSAbs
TPERI-
200-MHz CPUT and CPUC Absolute period,
SSC
ODSSAbs
TPERI-
266-MHz CPUT and CPUC Absolute period,
SSC
ODSSAbs
TCCJ
CPUT/C Cycle to Cycle Jitter
Measured at crossing point VOX
Measured from VOL = 0.175 to
–
95
ps
ps
TR / TF
CPUT and CPUC Rise and Fall Times
175
700
VOH = 0.525V
TRFM
Rise/Fall Matching
Determined as a fraction of
2*(TR – TF)/(TR + TF)
–
20
%
'TR
Rise Time Variation
–
–
250
250
100
850
–
ps
ps
'TF
Fall Time Variation
TSKEW
VHIGH
VLOW
VOX
Any CPU to CPU Clock Skew
Voltage High
Measured at crossing point Vox
Math averages Figure 13
Math averages Figure 13
–
ps
660
–150
250
mv
mv
mv
Voltage Low
Crossing Point Voltage at 0.7V Swing
Maximum Overshoot Voltage
550
VOVS
VHIGH
0.3
+
–
V
VUDS
VRB
Minimum Undershoot Voltage
Ring Back Voltage
–0.3
–
–
V
V
See Figure 13. 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
9.997001 10.00300 ns
Page 14 of 18
Rev 1.0,November 22, 2006
SPECTRALINEAR [ SPECTRALINEAR INC ]
