CY28411-1
AC Electrical Specifications
Parameter
Description
Condition
Min.
Max.
Unit
Crystal
TDC
XIN Duty Cycle
XIN Period
Thedevice willoperatereliably withinput
dutycyclesupto30/70buttheREFclock
duty cycle will not be within specification
47.5
52.5
71.0
%
TPERIOD
When XIN is driven from an external
clock source
69.841
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
45
55
%
TPERIOD
100-MHz CPUT and CPUC Period
133-MHz CPUT and CPUC Period
9.997001 10.00300 ns
7.497751 7.502251 ns
9.997001 10.05327 ns
7.497751 7.539950 ns
TPERIOD
TPERIODSS
TPERIODSS
TPERIODAbs
100-MHz CPUT and CPUC Period, SSC Measured at crossing point VOX
133-MHz CPUT and CPUC Period, SSC Measured at crossing point VOX
100-MHz CPUT and CPUC Absolute
period
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
9.912001 10.08800 ns
7.412751 7.587251 ns
9.912001 10.13827 ns
7.412751 7.624950 ns
TPERIODAbs
133-MHz CPUT and CPUC Absolute
period
TPERIODSSAbs 100-MHz CPUT and CPUC Absolute
period, SSC
TPERIODSSAbs 133-MHz CPUT and CPUC Absolute
period, SSC
TCCJ
CPUT/C Cycle to Cycle Jitter
CPU2_ITP Cycle to Cycle Jitter
CPU2_ITP to CPU0 Clock Skew
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
–
–
–
85
ps
ps
ps
TCCJ2
TSKEW2
TR / TF
125
150
CPUT and CPUC Rise and Fall Times Measured from VOL = 0.175 to VOH
0.525V
=
175
–
700
20
ps
%
TRFM
Rise/Fall Matching
Determined as a fraction of
2 * (TR – TF)/(TR + TF)
'TR
Rise Time Variation
–
–
125
ps
ps
mV
mV
mV
V
'TF
Fall Time Variation
125
VHIGH
VLOW
VOX
Voltage High
Math averages Figure 14
Math averages Figure 14
660
–150
250
–
850
Voltage Low
–
Crossing Point Voltage at 0.7V Swing
Maximum Overshoot Voltage
Minimum Undershoot Voltage
Ring Back Voltage
550
VOVS
VUDS
VRB
VHIGH + 0.3
–0.3
–
–
V
See Figure 14. Measure SE
0.2
V
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
9.997001 10.05327 ns
TPERIODSS
TPERIODAbs
100-MHz SRCT and SRCC Period, SSC Measured at crossing point VOX
100-MHz SRCT and SRCC Absolute
Period
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
10.12800 9.872001 ns
9.872001 10.17827 ns
TPERIODSSAbs 100-MHz SRCT and SRCC Absolute
Period, SSC
TSKEW
Any SRCT/C to SRCT/C Clock Skew
–
250
ps
Rev 1.0,November 22, 2006
Page 14 of 18