What is programmable logic device?

1 Answer

Answer :

Programmable Logic Devices (PLD)

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•PLD chips can be erased electrically and program to implement different logic function.

•Designing with PLD chips is faster which reduce time to bring the product in market.

•To reprogram PLD we do not have to redesign circuit board.

•Simple Programmable Logic Devices (SPLD), Complex Programmable Logic Devices (CPLD) and Field Programmable Gate Array (FPGA) are the types of Programmable Logic Devices (PLD).

•SPLD includes Read Only Memory (ROM), Programmable Logic Array (PLA), Programmable Array Logic (PAL) and Generic Array Logic (GAL).

•FPGA and CLPD are the types of advanced PLDs.

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Description : Write the four types of PLDs and describe each

Description : Complex Programmable Logic Devices (CPLD)

Answer : Complex Programmable Logic Devices (CPLD) CPLDs are the collection of SPLD structures which are interconnected via multiplexer or switch matrix. CPLD consists of number of logic blocks or ... timing characteristics. CPLD are use in cost sensitive application and it have low power usage.

Description : Simple Programmable Logic Devices 

Answer : Simple Programmable Logic Devices (SPLD) There are three main types of SPLD architecture Programmable Logic Array (PLA), Programmable Array Logic (PAL) and Generic Array Logic (GAL). SPLD is made ... ). PAL can not be reconfigured. GAL uses EEPROM configuration so it can be reconfigured.

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Answer : The second type of PLA is called a field programmable logic array. The user by means of certain recommended procedures can program the EPLA.

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Answer : In some cases the number of don’t care conditions is excessive, it is more economical to use a second type of LSI component called a PLA. A PLA is similar to a ROM in concept; however it does not provide full decoding of the variables and does not generates all the min-terms as in the ROM.

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