CY28447
AC Electrical Specifications (continued)
Parameter
TPERIOD
TPERIODAbs
THIGH
Description
Condition
Measurement at 1.5V
Min.
Max.
Unit
Period
20.83125 20.83542 ns
20.48125 21.18542 ns
Absolute Period
Measurement at 1.5V
48_M High time
Measurement at 2.4V
8.094
7.694
1.0
–
11.100
11.100
2.0
ns
ns
TLOW
48_M Low time
Measurement at 0.4V
TR / TF
Rising and Falling Edge Rate
Cycle to Cycle Jitter
48M Long Term Accuracy
Measured between 0.8V and 2.0V
Measurement at 1.5V
V/ns
ps
TCCJ
350
LACC
Measured at crossing point VOX
–
100
ppm
27_M at 3.3V
TDC
Duty Cycle
Measurement at 1.5V
45
27.000
27.000
10.5
10.5
1.0
55
%
TPERIOD
Spread Disabled 27M Period
Spread Enabled 27M Period
27_M High time
Measurement at 1.5V
27.0547
ns
Measurement at 1.5V
27.0547
THIGH
Measurement at 2.0V
–
–
ns
ns
TLOW
27_M Low time
Measurement at 0.8V
TR / TF
TCCJ
Rising and Falling Edge Rate
Cycle to Cycle Jitter
27_M Long Term Accuracy
Measured between 0.8V and 2.0V
Measurement at 1.5V
4.0
500
0
V/ns
ps
–
LACC
Measured at crossing point VOX
–
ppm
REF at 3.3V
TDC
REF Duty Cycle
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measured between 0.8V and 2.0V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
45
55
%
TPERIOD
TPERIODAbs
TR / TF
TSKEW
TCCJ
REF Period
69.8203
69.8622
ns
REF Absolute Period
REF Rising and Falling Edge Rate
REF Clock to REF Clock
REF Cycle to Cycle Jitter
Long Term Accuracy
68.82033 70.86224 ns
1.0
–
4.0
500
V/ns
ps
–
1000
300
ps
LACC
–
ppm
ENABLE/DISABLE and SET-UP
TSTABLE Clock Stabilization from Power-up
TSS
–
10.0
0
1.8
–
ms
ns
ns
Stopclock Set-up Time
Stopclock Hold Time
TSH
–
Rev 1.0,November 20, 2006
Page 19 of 21
SPECTRALINEAR [ SPECTRALINEAR INC ]
