PAL devices

E237420

PAL devices are early programmable logic components that allowed designers to implement custom digital logic functions and served as a precursor to more advanced devices like CPLDs and FPGAs.

All labels observed (1)

Label Occurrences
PAL devices canonical 1

How this entity was disambiguated

Statements (51)

Predicate Object
instanceOf digital integrated circuit
programmable logic device
abbreviation PAL
advantage field programmability (for some variants)
reduced board space compared to discrete logic
shorter design cycle than custom ASICs
architectureFeature fixed OR array
macrocells
optional output registers
programmable AND array
sum-of-products implementation
commonApplication address decoding
bus interface logic
state machine implementation
fullName Programmable Array Logic device
hasManufacturer Advanced Micro Devices
Lattice Semiconductor
Monolithic Memories
surface form: Monolithic Memories Inc.

National Semiconductor
hasPredecessor PLA device
programmable read-only memory
hasSuccessor CPLDs
surface form: CPLD

FPGA
GAL device
influencedDevelopmentOf complex programmable logic device
FPGA
surface form: field-programmable gate array
introducedAroundYear 1978
introducedInDecade 1970s
limitation limited logic capacity
limited number of product terms
one-time programmable for fuse-based devices
logicFamily CMOS-compatible
TTL-compatible
primaryUse glue logic in digital systems
implement custom digital logic functions
replace fixed-function logic ICs
programmedBy hardware device programmer
programmingTechnology EPROM-like cells
fuse
supports combinational logic
sequential logic
technology CMOS technology
surface form: CMOS

bipolar
typicalPackage DIP
PLCC
SOIC
usedIn computer peripheral design
embedded systems
industrial control systems
microprocessor-based systems
telecommunications equipment

How these facts were elicited

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

CPLDs developedFrom PAL devices
subject surface form: CPLD