LFE2-20E-5FN256I Lattice, LFE2-20E-5FN256I Datasheet - Page 23
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LFE2-20E-5FN256I
Manufacturer Part Number
LFE2-20E-5FN256I
Description
IC FPGA 21KLUTS 193I/O 256FPBGA
Manufacturer
Lattice
Series
ECP2r
Datasheets
1.LFE2-12SE-6FN256C.pdf
(389 pages)
2.LFE3-35EA-8FN672I.pdf
(21 pages)
3.LFE2-20E-5FN256I.pdf
(4 pages)
4.LFE2-20E-5FN256I.pdf
(769 pages)
Specifications of LFE2-20E-5FN256I
Number Of Logic Elements/cells
21000
Number Of Labs/clbs
2625
Total Ram Bits
282624
Number Of I /o
193
Number Of Gates
-
Voltage - Supply
1.14 V ~ 1.26 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 100°C
Package / Case
256-BGA
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
220-1170
LFE2-20E-5FN256I
Q6411457
LFE2-20E-5FN256I
Q6411457
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFE2-20E-5FN256I
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
- LFE2-12SE-6FN256C PDF datasheet
- LFE3-35EA-8FN672I PDF datasheet #2
- LFE2-20E-5FN256I PDF datasheet #3
- LFE2-20E-5FN256I PDF datasheet #4
- Current page: 23 of 389
- Download datasheet (5Mb)
Lattice Semiconductor
2. Write Through – A copy of the input data appears at the output of the same port during a write cycle. This
Memory Core Reset
The memory array in the EBR utilizes latches at the A and B output ports. These latches can be reset asynchro-
nously or synchronously. RSTA and RSTB are local signals, which reset the output latches associated with Port A
and Port B, respectively. The Global Reset (GSRN) signal resets both ports. The output data latches and associ-
ated resets for both ports are as shown in Figure 2-20.
Figure 2-20. Memory Core Reset
For further information about the sysMEM EBR block, please see the the list of additional technical documentation
at the end of this data sheet.
EBR Asynchronous Reset
EBR asynchronous reset or GSR (if used) can only be applied if all clock enables are low for a clock cycle before the
reset is applied and released a clock cycle after the reset is released, as shown in Figure 2-21. The GSR input to the
EBR is always asynchronous.
Figure 2-21. EBR Asynchronous Reset (Including GSR) Timing Diagram
If all clock enables remain enabled, the EBR asynchronous reset or GSR may only be applied and released after
the EBR read and write clock inputs are in a steady state condition for a minimum of 1/f
release must adhere to the EBR synchronous reset setup time before the next active read or write clock edge.
mode is supported for all data widths.
GSRN
RSTA
RSTB
Programmable Disable
Reset
Clock
Clock
Enable
Memory Core
2-20
Output Data
L
L
D
D
Latches
CLR
CLR
SET
SET
Q
Q
LatticeECP2/M Family Data Sheet
Port A[17:0]
Port B[17:0]
MAX
(EBR clock). The reset
Architecture
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