XC3S200AN-4FTG256C Xilinx Inc, XC3S200AN-4FTG256C Datasheet - Page 52

IC SPARTAN-3AN FPGA 200K 256FTBG

XC3S200AN-4FTG256C

Manufacturer Part Number
XC3S200AN-4FTG256C
Description
IC SPARTAN-3AN FPGA 200K 256FTBG
Manufacturer
Xilinx Inc
Series
Spartan™-3ANr

Specifications of XC3S200AN-4FTG256C

Total Ram Bits
294912
Number Of Logic Elements/cells
4032
Number Of Labs/clbs
448
Number Of I /o
195
Number Of Gates
200000
Voltage - Supply
1.14 V ~ 1.26 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
256-LBGA
No. Of Logic Blocks
4032
No. Of Gates
200000
No. Of Macrocells
4032
Family Type
Spartan-3AN
No. Of Speed Grades
4
No. Of I/o's
195
Package
256FTBGA
Family Name
Spartan®-3AN
Device Logic Units
4032
Device System Gates
200000
Maximum Internal Frequency
667 MHz
Typical Operating Supply Voltage
1.2 V
Maximum Number Of User I/os
195
Ram Bits
294912
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
122-1553

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Digital Clock Manager (DCM) Timing
For specification purposes, the DCM consists of three key
components: the Delay-Locked Loop (DLL), the Digital
Frequency Synthesizer (DFS), and the Phase Shifter (PS).
Aspects of DLL operation play a role in all DCM
applications. All such applications inevitably use the CLKIN
and the CLKFB inputs connected to either the CLK0 or the
CLK2X feedback, respectively. Thus, specifications in the
DLL tables
that only employs the DLL component. When the DFS
and/or the PS components are used together with the DLL,
then the specifications listed in the DFS and PS tables
(Table 41
ones in the DLL tables. DLL specifications that do not
change with the addition of DFS or PS functions are
presented in
Period jitter and cycle-cycle jitter are two of many different
ways of specifying clock jitter. Both specifications describe
statistical variation from a mean value.
Delay-Locked Loop (DLL)
Table 39: Recommended Operating Conditions for the DLL
DS557 (v4.1) April 1, 2011
Product Specification
Notes:
1.
2.
3.
4.
5.
Input Frequency Ranges
F
Input Pulse Requirements
CLKIN_PULSE
Input Clock Jitter Tolerance and Delay Path Variation
CLKIN_CYC_JITT_DLL_LF
CLKIN_CYC_JITT_DLL_HF
CLKIN_PER_JITT_DLL
CLKFB_DELAY_VAR_EXT
CLKIN
DLL specifications apply when any of the DLL outputs (CLK0, CLK90, CLK180, CLK270, CLK2X, CLK2X180, or CLKDV) are in use.
The DFS, when operating independently of the DLL, supports lower FCLKIN frequencies. See
The CLKIN_DIVIDE_BY_2 attribute can be used to increase the effective input frequency range up to F
CLKIN_DIVIDE_BY_2 divides the incoming clock frequency by two as it enters the DCM.
CLKIN input jitter beyond these limits might cause the DCM to lose lock.
The DCM specifications are guaranteed when both adjacent DCMs are locked.
through
CLKIN_FREQ_DLL
(Table 39
Symbol
Table 39
Table
and
and
44) supersede any corresponding
Table
Table
40) apply to any application
40.
Allowable variation of off-chip feedback delay
Frequency of the CLKIN clock input
CLKIN pulse width as a
percentage of the CLKIN
period
Cycle-to-cycle jitter at the
CLKIN input
Period jitter at the CLKIN input
from the DCM output to the CLKFB input
Description
(4)
www.xilinx.com
Spartan-3AN FPGA Family: DC and Switching Characteristics
F
F
F
F
CLKIN
CLKIN
CLKIN
CLKIN
Period jitter is the worst-case deviation from the ideal clock
period over a collection of millions of samples. In a
histogram of period jitter, the mean value is the clock period.
Cycle-cycle jitter is the worst-case difference in clock period
between adjacent clock cycles in the collection of clock
periods sampled. In a histogram of cycle-cycle jitter, the
mean value is zero.
Spread Spectrum
DCMs accept typical spread spectrum clocks as long as
they meet the input requirements. The DLL will track the
frequency changes created by the spread spectrum clock to
drive the global clocks to the FPGA logic. See XAPP469:
Spread-Spectrum Clocking Reception for Displays for
details.
< 150 MHz
> 150 MHz
< 150 MHz
> 150 MHz
40%
45%
Min
5
(2)
Table
-5
±300
±150
41.
Max
60%
55%
Speed Grade
280
±1
±1
BUFG
(3)
. When set to TRUE,
40%
45%
Min
5
(2)
-4
±300
±150
Max
60%
55%
250
±1
±1
(3)
Units
MHz
ps
ps
ns
ns
%
%
52

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