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WDC 65C816

The W65C816S (also 65C816 or 65816) is a 16-bit microprocessor or CPU developed and sold by the Western Design Center (WDC). Introduced in 1985, the W65C816S is an enhanced version of the WDC 65C02 8-bit CPU, itself a CMOS enhancement of the venerable MOS Technology 6502 NMOS CPU. The 65C816 is the CPU for the Apple IIGS and, in modified form, the Super…

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Address width
24 bits
Common manufacturer
Western Design Center, others
Data width
8 (external) · 16 (internal)
Instruction set
6502
Launched
1985; 41 years ago (1985)
Max. CPU clock rate
1 MHz to 14 MHz

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Features

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  • ISBN ISBN (identifier)

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WDC 65C816

Nodes87
Edges86
Triples56
Avg. degree1.98
Density0.022989
Components1

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WDC 65C816

Top relations

related to Features · 40
WDC 65C816 → Abort, ABORTB, All, ALU, Block-copy, CMOS, Co-Processor, COP, DB, Direct, DMA, DP, Emulation, Fully, MB, Mensch, MHz, MVNandMVP, NMOS, PB
Variant · 3
WDC 65C816 → W65C265 (MCU), W65C802 (pin-compatible with W65C02), W65C802 (pin-compatible with W65C02) W65C265 (MCU)
Data width · 2
WDC 65C816 → 16 (internal), 8 (external)
Packages · 2
WDC 65C816 → 40-pin DIP, 44-pin PLCC, others
Predecessors · 2
WDC 65C816 → MOS 6502, WDC 65C02
Address width · 1
WDC 65C816 → 24 bits
Common manufacturer · 1
WDC 65C816 → Western Design Center, others
Instruction set · 1
WDC 65C816 → 6502
Launched · 1
WDC 65C816 → 1985; 41 years ago (1985)
Max. CPU clock rate · 1
WDC 65C816 → 1 MHz to 14 MHz

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Important terminology

16-bit 65c02 65c816 mode 6502 bits registers set register memory accumulator address w65c816s 16 native used addressing instruction cpu 24-bit

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
WDC 65C816Address width24 bits1.00infobox
WDC 65C816Common manufacturerWestern Design Center, others1.00infobox
WDC 65C816Data width8 (external)1.00infobox
WDC 65C816Data width16 (internal)1.00infobox
WDC 65C816Instruction set65021.00infobox
WDC 65C816Launched1985; 41 years ago (1985)1.00infobox
WDC 65C816Max. CPU clock rate1 MHz to 14 MHz1.00infobox
WDC 65C816Number of instructions921.00infobox
WDC 65C816Packages40-pin DIP1.00infobox
WDC 65C816Packages44-pin PLCC, others1.00infobox
WDC 65C816PredecessorsMOS 65021.00infobox
WDC 65C816PredecessorsWDC 65C021.00infobox
WDC 65C816SuccessorWDC 65C832 (never released)1.00infobox
WDC 65C816VariantW65C802 (pin-compatible with W65C02) W65C265 (MCU)1.00infobox
WDC 65C816VariantW65C802 (pin-compatible with W65C02)1.00infobox
WDC 65C816VariantW65C265 (MCU)1.00infobox

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