LFXP2-5E-5TN144I Lattice, LFXP2-5E-5TN144I Datasheet - Page 19
LFXP2-5E-5TN144I
Manufacturer Part Number
LFXP2-5E-5TN144I
Description
FPGA - Field Programmable Gate Array 5K LUTs 100 I/O Inst on DSP 1.2V -5 Spd
Manufacturer
Lattice
Datasheet
1.LFXP2-8E-5FTN256I.pdf
(341 pages)
Specifications of LFXP2-5E-5TN144I
Number Of Macrocells
5000
Number Of Programmable I/os
100
Data Ram Size
169984
Supply Voltage (max)
1.26 V
Maximum Operating Temperature
+ 100 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Supply Voltage (min)
1.14 V
Package / Case
TQFP-144
Number Of Logic Elements/cells
*
Number Of Labs/clbs
*
Total Ram Bits
169984
Number Of I /o
100
Number Of Gates
-
Voltage - Supply
1.14 V ~ 1.26 V
Mounting Type
*
Operating Temperature
-40°C ~ 100°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
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Manufacturer
Quantity
Price
Company:
Part Number:
LFXP2-5E-5TN144I
Manufacturer:
TI
Quantity:
2 900
Company:
Part Number:
LFXP2-5E-5TN144I
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Lattice Semiconductor
Modes of Operation
Each slice has up to four potential modes of operation: Logic, Ripple, RAM and ROM.
Logic Mode
In this mode, the LUTs in each slice are configured as LUT4s. A LUT4 has 16 possible input combinations. Four-
input logic functions are generated by programming the LUT4. Since there are two LUT4s per slice, a LUT5 can be
constructed within one slice. Larger LUTs such as LUT6, LUT7 and LUT8, can be constructed by concatenating
two or more slices. Note that a LUT8 requires more than four slices.
Ripple Mode
Ripple mode allows efficient implementation of small arithmetic functions. In ripple mode, the following functions
can be implemented by each slice:
• Addition 2-bit
• Subtraction 2-bit
• Add/Subtract 2-bit using dynamic control
• Up counter 2-bit
• Down counter 2-bit
• Up/Down counter with async clear
• Up/Down counter with preload (sync)
• Ripple mode multiplier building block
• Multiplier support
• Comparator functions of A and B inputs
Two carry signals, FCI and FCO, are generated per slice in this mode, allowing fast arithmetic functions to be con-
structed by concatenating slices.
RAM Mode
In this mode, a 16x4-bit distributed Single Port RAM (SPR) can be constructed using each LUT block in Slice 0 and
Slice 2 as a 16x1-bit memory. Slice 1 is used to provide memory address and control signals. A 16x2-bit Pseudo
Dual Port RAM (PDPR) memory is created by using one slice as the read-write port and the other companion slice
as the read-only port.
The Lattice design tools support the creation of a variety of different size memories. Where appropriate, the soft-
ware will construct these using distributed memory primitives that represent the capabilities of the PFU. Table 2-3
shows the number of slices required to implement different distributed RAM primitives. For more information on
using RAM in LatticeXP2 devices, please see TN1137,
Table 2-3. Number of Slices Required For Implementing Distributed RAM
ROM Mode
ROM mode uses the LUT logic; hence, Slices 0 through 3 can be used in the ROM mode. Preloading is accom-
plished through the programming interface during PFU configuration.
– A greater-than-or-equal-to B
– A not-equal-to B
– A less-than-or-equal-to B
Number of slices
Note: SPR = Single Port RAM, PDPR = Pseudo Dual Port RAM
SPR 16X4
LatticeXP2 Memory Usage
2-5
3
LatticeXP2 Family Data Sheet
Guide.
PDPR 16X4
3
Architecture
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