lfe2-12e-5f484i Lattice Semiconductor Corp., lfe2-12e-5f484i Datasheet - Page 86
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lfe2-12e-5f484i
Manufacturer Part Number
lfe2-12e-5f484i
Description
Latticeecp2/m Family Data Sheet Introduction
Manufacturer
Lattice Semiconductor Corp.
Datasheet
1.LFE2-12E-5F484I.pdf
(385 pages)
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Manufacturer
Quantity
Price
Company:
Part Number:
LFE2-12E-5F484I
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Lattice Semiconductor
sysCLOCK GPLL Timing
f
f
f
f
f
AC Characteristics
t
t
t
t
t
t
t
t
t
t
t
t
1. Jitter sample is taken over 10,000 samples of the primary PLL output with clean reference clock and no additional I/O pins toggling.
2. Output clock is valid after t
3. Using LVDS output buffers.
4. Relative to CLKOP.
5. Value of external capacitor: 5.6 nF ±20%, NPO dielectric, ceramic chip capacitor, 1206 or smaller package, connected to PLLCAP pin.
6. f
Timing v.A 0.11
IN
OUT
OUT2
VCO
PFD
DT
PH
OPJIT
SK
W
LOCK
PA
IPJIT
FBKDLY
HI
LO
RST
Parameter
4
OUT
2
1
(max) = f
Input Clock Frequency (CLKI, CLKFB)
Output Clock Frequency (CLKOP,
CLKOS)
K-Divider Output Frequency (CLKOK)
PLL VCO Frequency
Phase Detector Input Frequency
Output Clock Duty Cycle
Output Phase Accuracy
Output Clock Period Jitter
Input Clock to Output Clock Skew
Output Clock Pulse Width
PLL Lock-in Time
Programmable Delay Unit
Input Clock Period Jitter
External Feedback Delay
Input Clock High Time
Input Clock Low Time
RST Pulse Width (RESETM/RESETK)
Reset Signal Pulse Width (CNTRST)
IN
* 10 for f
IN
LOCK
< 5MHz.
Description
for PLL reset and dynamic delay adjustment.
Over Recommended Operating Conditions
Without external capacitor
With external capacitor
Without external capacitor
With external capacitor
Without external capacitor
With external capacitor
Without external capacitor
With external capacitor
f
50 ≤ f
f
Without external capacitor
With external capacitor
Without external capacitor
With external capacitor
Default duty cycle selected
N/M = integer
At 90% or 10%
90% to 90%
10% to 10%
OUT
OUT
3-35
≥ 100 MHz
< 50 MHz
OUT
< 100 MHz
Conditions
DC and Switching Characteristics
LatticeECP2/M Family Data Sheet
5, 6
5
5
5, 6
5
5
3
0.156
0.039
Min.
640
500
0.5
0.5
20
20
20
45
85
15
20
—
—
—
—
—
—
—
—
—
2
5
2
1
Typ.
130
50
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
±0.05
0.025
Max.
1280
±125
±200
±250
0.04
420
420
420
210
420
150
500
360
50
25
50
55
10
—
—
—
—
—
—
Units
UIPP
UIPP
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
µs
µs
µs
ps
ps
ns
ps
ps
ns
ns
ns
ns
ns
%
UI
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