LFXP20C-3FN256C Lattice, LFXP20C-3FN256C Datasheet - Page 230
![FPGA - Field Programmable Gate Array 19.7K LUTS 188 I/O](/photos/16/15/161505/landingpagelatticexp2_sml.jpg)
LFXP20C-3FN256C
Manufacturer Part Number
LFXP20C-3FN256C
Description
FPGA - Field Programmable Gate Array 19.7K LUTS 188 I/O
Manufacturer
Lattice
Specifications of LFXP20C-3FN256C
Number Of Programmable I/os
188
Data Ram Size
405504
Supply Voltage (max)
3.465 V
Maximum Operating Temperature
+ 90 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Supply Voltage (min)
1.71 V
Package / Case
FPBGA-256
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFXP20C-3FN256C
Manufacturer:
Lattice
Quantity:
135
Company:
Part Number:
LFXP20C-3FN256C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Lattice Semiconductor
Figure 10-12. READ Data Transfer When DDRCLKPOL=0
DDRCLKPOL= 0
IO REGISTERS
Notes -
CLK TO SYNC
(1) DDR memory sends DQ aligned to DQS strobe.
(2) The DQS Strobe is delayed by 90 degree using the dedicated DQS logic.
(3) DQ is now center aligned to DQS Strobe.
(4) PRMBDET is the Preamble detect signal generated using the DQSBUFB primitive. This is used to
(5) The first set of IO registers A and B, capture data on the positive edge and negative edge of DQS.
(6) IO register C transfers data so that both data are now aligned to negative edge of DQS.
(7) DDCLKPOL signal generated will determine if the CLK going into the synchronization registers need to
(8) The IO Synchronization registers capture data at on positive edge of the FPGA CLK.
DQS at PIN
DQS at IOL
FPGA CLK
PRMBDET
generate the DDRCLKPOL signal.
be inverted. In this case, the DDRCLKPOL=0 as the CLK is LOW at the 1
DATAIN_P
DATAIN_N
DQ at PIN
DQ at IOL
C
A
B
P0
P0
10-11
N0
N0
P0
P1
P1
N0
P0
N1
P1
N1
P0
N0
N1
P1
st
LatticeECP/EC and LatticeXP
rising edge of PRMBDET.
DDR Usage Guide
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