Electronics-Programmable Logic Devices (PLD)
Electronics-Programmable Logic Devices (PLD)
2. The content of a simple programmable logic device (PLD) consists of:
- fuse-link arrays
- thousands of basic logic gates
- advanced sequential logic functions
- thousands of basic logic gates and advanced sequential logic functions
3. Once a PAL has been programmed:
- it cannot be reprogrammed.
- its outputs are only active HIGHs
- its outputs are only active LOWs
- its logic capacity is lost
4. The complex programmable logic device (CPLD) contains several PLD blocks and:
- field-programmable switches
- AND/OR arrays
- a global interconnection matrix
- a language compiler
5. The difference between a PLA and a PAL is:
- the PLA has a programmable OR plane and a programmable AND plane, while the PAL only has a programmable AND plane
- the PAL has a programmable OR plane and a programmable AND plane, while the PLA only has a programmable AND plane
- the PAL has more possible product terms than the PLA
- PALs and PLAs are the same thing.