LFEC10E-3FN484C LATTICE SEMICONDUCTOR, LFEC10E-3FN484C Datasheet - Page 27
LFEC10E-3FN484C
Manufacturer Part Number
LFEC10E-3FN484C
Description
FPGA LatticeEC Family 10200 Cells 340MHz 130nm (CMOS) Technology 1.2V 484-Pin FBGA
Manufacturer
LATTICE SEMICONDUCTOR
Datasheet
1.LFEC3E-5TN144C.pdf
(163 pages)
Specifications of LFEC10E-3FN484C
Package
484FBGA
Family Name
LatticeEC
Device Logic Units
10200
Maximum Internal Frequency
340 MHz
Typical Operating Supply Voltage
1.2 V
Maximum Number Of User I/os
288
Ram Bits
282624
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Figure 2-27. Input Register DDR Waveforms
Figure 2-28. INDDRXB Primitive
Output Register Block
The output register block provides the ability to register signals from the core of the device before they are passed
to the sysI/O buffers. The block contains a register for SDR operation that is combined with an additional latch for
DDR operation. Figure 2-29 shows the diagram of the Output Register Block.
In SDR mode, ONEG0 feeds one of the flip-flops that then feeds the output. The flip-flop can be configured a D-
type or latch. In DDR mode, ONEG0 is fed into one register on the positive edge of the clock and OPOS0 is
latched. A multiplexer running off the same clock selects the correct register for feeding to the output (D0).
Figure 2-30 shows the design tool DDR primitives. The SDR output register has reset and clock enable available.
The additional register for DDR operation does not have reset or clock enable available.
(In DDR Mode)
Delayed
DQS
DQS
D0
D2
DI
DDRCLKPOL
A
ECLK
SCLK
LSR
CE
D
B
2-24
IDDRXB
C
B
A
QA
QB
LatticeECP/EC Family Data Sheet
D
E
D
C
F
Architecture
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