CY28447 ETC, CY28447 Datasheet - Page 19

• Manufacturer Part Number: CY28447
• Description: Clock Generator
• Manufacturer: ETC

Rev 1.0, November 20, 2006
AC Electrical Specifications
T
T
T
T
T
T
L
27_M at 3.3V
T
T
T
T
T
T
L
REF at 3.3V
T
T
T
T
T
T
L
ENABLE/DISABLE and SET-UP
T
T
T
ACC
ACC
ACC
PERIOD
PERIODAbs
HIGH
LOW
R
CCJ
DC
PERIOD
HIGH
LOW
R
CCJ
DC
PERIOD
PERIODAbs
R
SKEW
CCJ
STABLE
SS
SH
Parameter
/ T
/ T
/ T
F
F
F
Period
Absolute Period
48_M High time
48_M Low time
Rising and Falling Edge Rate
Cycle to Cycle Jitter
48M Long Term Accuracy
Duty Cycle
Spread Disabled 27M Period
Spread Enabled 27M Period
27_M High time
27_M Low time
Rising and Falling Edge Rate
Cycle to Cycle Jitter
27_M Long Term Accuracy
REF Duty Cycle
REF Period
REF Absolute Period
REF Rising and Falling Edge Rate
REF Clock to REF Clock
REF Cycle to Cycle Jitter
Long Term Accuracy
Clock Stabilization from Power-up
Stopclock Set-up Time
Stopclock Hold Time
Description
(continued)
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.4V
Measurement at 0.4V
Measured between 0.8V and 2.0V
Measurement at 1.5V
Measured at crossing point V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.0V
Measurement at 0.8V
Measured between 0.8V and 2.0V
Measurement at 1.5V
Measured at crossing point V
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
Measurement at 1.5V
Measurement at 1.5V
Condition
OX
OX
20.83125
20.48125
68.82033
69.8203
27.000
27.000
8.094
7.694
Min.
10.5
10.5
10.0
1.0
1.0
1.0
45
45
–
–
–
–
–
–
–
–
0
CY28447
20.83542
21.18542
70.86224
27.0547
27.0547
69.8622
Page 19 of 21
11.100
11.100
Max.
1000
350
100
500
500
300
2.0
4.0
4.0
1.8
55
55
–
–
–
0
–
V/ns
V/ns
V/ns
Unit
ppm
ppm
ppm
ms
ns
ns
ns
ns
ps
ns
ns
ns
ps
ns
ns
ps
ps
ns
ns
%
%