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PDF LCMXO2-640ZE Data sheet ( Hoja de datos )

Número de pieza LCMXO2-640ZE
Descripción MachXO2 Family
Fabricantes Lattice 
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MachXO2™ Family Data Sheet
DS1035 Version 01.9, April 2012

1 page




LCMXO2-640ZE pdf
MachXO2 Family Data Sheet
Architecture
April 2012
Data Sheet DS1035
Architecture Overview
The MachXO2 family architecture contains an array of logic blocks surrounded by Programmable I/O (PIO). The
larger logic density devices in this family have sysCLOCK™ PLLs and blocks of sysMEM Embedded Block RAM
(EBRs). Figures 2-1 and 2-2 show the block diagrams of the various family members.
Figure 2-1. Top View of the MachXO2-1200 Device
Embedded Function
Block (EFB)
User Flash Memory
(UFM)
sysCLOCK PLL
On-chip Configuration
Flash Memory
PIOs Arranged into
sysIO Banks
sysMEM Embedded
Block RAM (EBR)
Programmable Function Units
with Distributed RAM (PFUs)
Note: MachXO2-256, and MachXO2-640/U are similar to MachXO2-1200. MachXO2-256 has a lower LUT count and no PLL or EBR blocks.
MachXO2-640 has no PLL, a lower LUT count and two EBR blocks. MachXO2-640U has a lower LUT count, one PLL and seven EBR blocks.
Figure 2-2. Top View of the MachXO2-4000 Device
sysCLOCK PLL
Embedded
Function Block(EFB)
User Flash
Memory (UFM)
On-chip Configuration
Flash Memory
PIOs Arranged into
sysIO Banks
sysMEM Embedded
Block RAM (EBR)
Programmable Function Units
with Distributed RAM (PFUs)
Note: MachXO2-1200U, MachXO2-2000/U and MachXO2-7000 are similar to MachXO2-4000. MachXO2-1200U and MachXO2-2000 have a lower LUT count,
one PLL, and eight EBR blocks. MachXO2-2000U has a lower LUT count, two PLLs, and 10 EBR blocks. MachXO2-7000 has a higher LUT count, two PLLs,
and 26 EBR blocks.
© 2012 Lattice Semiconductor Corp. All Lattice trademarks, registered trademarks, patents, and disclaimers are as listed at www.latticesemi.com/legal. All other brand
or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject to change without notice.
www.latticesemi.com
2-1 DS1035 Architecture_01.4

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LCMXO2-640ZE arduino
Architecture
MachXO2 Family Data Sheet
Eight secondary high fanout nets are generated from eight 8:1 muxes as shown in Figure 2-6. One of the eight
inputs to the secondary high fanout net input mux comes from dual function clock pins and the remaining seven
come from internal routing. The maximum frequency for the secondary clock network is shown in MachXO2 Exter-
nal Switching Characteristics table.
Figure 2-6. Secondary High Fanout Nets for MachXO2 Devices
17
8:1
Secondary High
Fanout Net 0
Secondary High
8:1 Fanout Net 1
Secondary High
8:1 Fanout Net 2
Secondary High
8:1 Fanout Net 3
Secondary High
8:1 Fanout Net 4
Secondary High
8:1 Fanout Net 5
Secondary High
8:1 Fanout Net 6
Secondary High
8:1 Fanout Net 7
Clock Pads Routing
sysCLOCK Phase Locked Loops (PLLs)
The sysCLOCK PLLs provide the ability to synthesize clock frequencies. The MachXO2-640U, MachXO2-1200/U
and larger devices have one or more sysCLOCK PLL. CLKI is the reference frequency input to the PLL and its
source can come from an external I/O pin or from internal routing. CLKFB is the feedback signal to the PLL which
can come from internal routing or an external I/O pin. The feedback divider is used to multiply the reference fre-
quency and thus synthesize a higher frequency clock output.
The MachXO2 sysCLOCK PLLs support high resolution (16-bit) fractional-N synthesis. Fractional-N frequency syn-
thesis allows the user to generate an output clock which is a non-integer multiple of the input frequency. For more
information about using the PLL with Fractional-N synthesis, please see TN1199, MachXO2 sysCLOCK PLL
Design and Usage Guide.
Each output has its own output divider, thus allowing the PLL to generate different frequencies for each output. The
output dividers can have a value from 1 to 128. The CLKOS2 and CLKOS3 dividers may also be cascaded together
to generate low frequency clocks. The CLKOP, CLKOS, CLKOS2, and CLKOS3 outputs can all be used to drive the
MachXO2 clock distribution network directly or general purpose routing resources can be used.
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