LFE2-35E-5FN484C LATTICE SEMICONDUCTOR, LFE2-35E-5FN484C Datasheet - Page 23
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LFE2-35E-5FN484C
Manufacturer Part Number
LFE2-35E-5FN484C
Description
IC, LATTICEECP2 FPGA, 420MHZ, FPBGA-484
Manufacturer
LATTICE SEMICONDUCTOR
Series
LatticeECP2r
Datasheet
1.LFE2-12E-5FN256C.pdf
(385 pages)
Specifications of LFE2-35E-5FN484C
No. Of Logic Blocks
32000
No. Of Macrocells
16000
No. Of Speed Grades
5
No. Of I/o's
331
Clock Management
DLL, PLL
I/o Supply Voltage
3.465V
Total Ram Bits
332Kbit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFE2-35E-5FN484C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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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.
If an EBR is pre-loaded during configuration, the GSR input must be disabled or the release of the GSR during
device Wake Up must occur before the release of the device I/Os becomes active.
These instructions apply to all EBR RAM and ROM implementations.
Note that there are no reset restrictions if the EBR synchronous reset is used and the EBR GSR input is disabled.
sysDSP™ Block
The LatticeECP2/M family provides a sysDSP block, making it ideally suited for low cost, high performance Digital
Signal Processing (DSP) applications. Typical functions used in these applications are Finite Impulse Response
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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