參數(shù)資料
型號: LFECP40E-3F484I
廠商: Lattice Semiconductor Corporation
英文描述: LatticeECP/EC Family Data Sheet
中文描述: LatticeECP / EC的系列數(shù)據(jù)手冊
文件頁數(shù): 9/117頁
文件大?。?/td> 557K
代理商: LFECP40E-3F484I
2-6
Architecture
Lattice Semiconductor
LatticeECP/EC Family Data Sheet
Figure 2-5. Distributed Memory Primitives
ROM Mode:
accomplished through the programming interface during con
fi
guration.
The ROM mode uses the same principal as the RAM modes, but without the Write port. Pre-loading is
PFU Modes of Operation
Slices can be combined within a PFU to form larger functions. Table 2-4 tabulates these modes and documents the
functionality possible at the PFU level.
Table 2-4. PFU Modes of Operation
Logic
LUT 4x8 or
MUX 2x1 x 8
LUT 5x4 or
MUX 4x1 x 4
LUT 6x 2 or
MUX 8x1 x 2
LUT 7x1 or
MUX 16x1 x 1
1. These modes are not available in PFF blocks
Ripple
2-bit Add x 4
RAM
1
ROM
SPR16x2 x 4
DPR16x2 x 2
SPR16x4 x 2
DPR16x4 x 1
SPR16x8 x 1
ROM16x1 x 8
2-bit Sub x 4
ROM16x2 x 4
2-bit Counter x 4
ROM16x4 x 2
2-bit Comp x 4
ROM16x8 x 1
DO1
DO0
DI0
DI1
WRE
AD0
AD1
AD2
AD3
CK
DO0
AD0
AD1
AD2
AD3
DPR16x2
SPR16x2
ROM16x1
RDO1
WDO0
RDO0
DI0
DI1
WCK
WRE
WDO1
WAD0
WAD1
WAD2
WAD3
RAD0
RAD1
RAD2
RAD3
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