CY2291FX Ver la hoja de datos (PDF) - Cypress Semiconductor
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CY2291FX Datasheet PDF : 12 Pages
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CY2291
Switching Characteristics, Industrial 5.0V
Parameter
Name
Description
Min.
Typ.
Max.
Unit
t1
Output Period Clock output range,
CY2291I
5V operation
11.1
(90 MHz)
13000
ns
(76.923 kHz)
CY2291FI
12.5
(80 MHz)
13000
ns
(76.923 kHz)
Output Duty
Cycle[11]
Duty cycle for outputs, defined as t2 ÷ t1[12]
fOUT > 66 MHZ
Duty cycle for outputs, defined as t2 ÷ t1[12]
fOUT < 66 MHZ
t3
Rise Time
Output clock rise time[13]
t4
Fall Time
Output clock fall time[13]
40%
50%
60%
45%
50%
55%
3
5
ns
2.5
4
ns
t5
Output Disable Time for output to enter three-state mode after
Time
SHUTDOWN/OE goes LOW
10
15
ns
t6
Output Enable Time for output to leave three-state mode after
Time
SHUTDOWN/OE goes HIGH
10
15
ns
t7
Skew
Skew delay between any identical or related outputs[3,
12, 15]
< 0.25
0.5
ns
t8
CPUCLK Slew Frequency transition rate
1.0
20.0
MHz/m
s
t9A
Clock Jitter[14] Peak-to-peak period jitter (t9A Max. – t9A min.),% of
clock period (fOUT < 4 MHz)
t9B
Clock Jitter[14] Peak-to-peak period jitter (t9B Max. – t9B min.) (4 MHz
< fOUT < 16 MHz)
t9C
Clock Jitter[14] Peak-to-peak period jitter
(16 MHz < fOUT < 50 MHz)
t9D
Clock Jitter[14] Peak-to-peak period jitter
(fOUT > 50 MHz)
t10A
Lock Time for Lock Time from Power Up
CPLL
<0.5
1
%
<0.7
1
ns
<400
500
ps
<250
350
ps
<25
50
ms
t10B
Lock Time for Lock Time from Power Up
UPLL and SPLL
<0.25
1
ms
Slew Limits CPU PLL Slew Limits
CY2291I
8
90
MHz
CY2291FI
8
80
MHz
Switching Characteristics, Industrial 3.3V
Parameter
Name
t1
Output Period
Description
Clock output range, 3.3V
operation
CY2291I
CY2291FI
Output Duty
Cycle[11]
Duty cycle for outputs, defined as t2 ÷ t1[12]
fOUT > 66 MHZ
Duty cycle for outputs, defined as t2 ÷ t1[12]
fOUT < 66 MHZ
t3
Rise Time
Output clock rise time[13]
t4
Fall Time
Output clock fall time[13]
t5
Output Disable Time for output to enter three-state mode after
Time
SHUTDOWN/OE goes LOW
Min.
Typ.
Max.
Unit
15
(66.6 MHz)
13000
ns
(76.923 kHz)
16.66
(60 MHz)
13000
ns
(76.923 kHz)
40%
50%
60%
45%
50%
55%
3
5
ns
2.5
4
ns
10
15
ns
Document #: 38-07189 Rev. *C
Page 8 of 12
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