Field programmable gate arrays

Сентябрь 7, 2022

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Field programmable gate arrays

Содержание

2. What is a FPGA Field programmable gate arrays (FPGAs) – are digital integrated circuits that contain
3. Why do we need FPGAs? Low development cost Short time to market Reprogrammable High performance ASICs
4. Other FPGA advantages Manufacturing cycle for ASIC is very costly, lengthy and engages lots of manpower
5. Architecture of FPGA The architecture of FPGA is very simple than other programmable devices Elements of
6. A simple modern architecture of FPGA is shown below: Architecture of FPGA All FPGAs include a
7. A simple programmable function
8. Technology of program logic devices Fusible link technologies Unprogrammed fusible links Programmed fusible links
9. Technology of program logic devices Antifuse technologies Unprogrammed antifuse links Programmed antifuse links The act of
10. Physical principles of logic block configuration Mask-programmed devices A transistor-based mask-programmed ROM cell creating is a
11. Physical principles of logic block configuration EPROM-based technologies An EPROM transistor-based memory cell expensive packages with
12. Physical principles of logic block configuration fast re-programmabalaty standard IC fabrication technologies is used requires large
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Слайд 2

What is a FPGA
Field programmable gate arrays (FPGAs) – are

digital integrated circuits that contain configurable blocks of logic along with configurable interconnects between these blocks.

Full-Custom
ASICs

Semi-Custom
ASICs

User
Programmable

PLD

FPGA

World of Integrated Circuits

Слайд 3

Why do we need FPGAs?
Low development cost
Short time to market
Reprogrammable
High performance
ASICs
FPGAs
Low

power

Low cost in
high volumes

Слайд 4

Other FPGA advantages
Manufacturing cycle for ASIC is very costly, lengthy and

engages lots of manpower
Mistakes not detected at design time have large impact on development time and cost
FPGAs are perfect for rapid prototyping of digital circuits
Easy upgrades like in case of software
Unique applications

Слайд 5

Architecture of FPGA
The architecture of FPGA is very simple than other

programmable devices
Elements of FPGA
The basic elements of an Field Programmable Gate Array are:
Configurable logic blocks(CLBs)
Configurable input output blocks(IOBs)
Two layer metal network of vertical and horizontal lines for interconnecting the CLBS and FPGAs (programmable interconnect)

Слайд 6

A simple modern architecture of FPGA is shown below:
Architecture of FPGA
All

FPGAs include a regular, programmable, and flexible architecture of logic blocks surrounded by input/output blocks on the perimeter. These functional blocks are linked together by a hierarchy of highly versatile programmable interconnects.

Слайд 7

A simple programmable function

Слайд 8

Technology of program logic devices
Fusible link technologies
Unprogrammed fusible links
Programmed fusible links

Слайд 9

Technology of program logic devices
Antifuse technologies
Unprogrammed antifuse links
Programmed antifuse links
The act

of programming particular element effectively grows a link by converting the insulating amorphous silicon into conducting polysilicon

Слайд 10

Physical principles of logic block
configuration
Mask-programmed devices
A transistor-based mask-programmed
ROM cell

creating is a very expensive
little used in a development environment
in which often need to modify contents

Programmable read-only memory PROMs

A transistor-based PROM cell

intended for use as memories to store computer programs
could be used to fix bugs or test new implementations

Слайд 11

Physical principles of logic block
configuration
EPROM-based technologies
An EPROM transistor-based memory cell

expensive packages with quartz windows
and the time takes to erase
use as a programmable memories

EEPROM-based technologies

An EEPROM-cell

EEPROM transistor contains a floating gate, but the insulating oxide layers surrounding this gate are very much thinner
the second transistor can be used to erase the cell electrically

Слайд 12

Physical principles of logic block
configuration
fast re-programmabalaty
standard IC fabrication technologies

is used
requires large area

SRAM-based technologies

An SRAM-cell programmable cell

Flash-based technologies

A floating-gate transistor used in flash memory

electrically erased
less power
tolerant to radiation effect

Field programmable gate arrays

Содержание

What is a FPGA Field programmable gate arrays (FPGAs) – are

Why do we need FPGAs?Low development costShort time to marketReprogrammableHigh performanceASICsFPGAsLow

Other FPGA advantagesManufacturing cycle for ASIC is very costly, lengthy and

Architecture of FPGAThe architecture of FPGA is very simple than other

A simple modern architecture of FPGA is shown below:Architecture of FPGAAll

A simple programmable function

Technology of program logic devicesFusible link technologiesUnprogrammed fusible linksProgrammed fusible links

Technology of program logic devicesAntifuse technologiesUnprogrammed antifuse linksProgrammed antifuse linksThe act

Physical principles of logic block configurationMask-programmed devicesA transistor-based mask-programmed ROM cell

Physical principles of logic block configurationEPROM-based technologiesAn EPROM transistor-based memory cell

Physical principles of logic block configurationfast re-programmabalaty standard IC fabrication technologies

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