w65c816s Microprocessor Data Sheet.pdf

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The Western Design Center, Inc.W65C816S Data SheetTable 2-1 W65C816S Microprocessor Programming Model8 BITS 8 BITS 8 BITSData Bank Register(DBR)X Register (XH) X Register (XL)Data Bank Register(DBR)Y Register (YH) Y Register (YL)00 Stack Register (SH) Stack Register (SL)Accumulator (B) (C) Accumulator (A)Program Bank Register(PBR)Program (PCH) Counter (PCL)00 Direct Register (DH) Direct Register (DL)Shaded blocks = 6502 registers1 BBRK command:1=BRK 0=IRQN V M X D I Z CCarry 1=trueZero 1=result zeroIRQ disable 1=disableDecimal mode 1=trueIndex Register Select 1=8-bit, 0=16-bitMemory Select 1=8-bit, 0=16-bitOverflow 1=trueEmulation 1=6502 Emulation ModeNegative 1=negative0=Native ModeEThe Western Design Center W65C816S 12
The Western Design Center, Inc.3 PIN FUNCTION DESCRIPTIONW65C816S Data SheetMLBIRQBABORTBRDYVPBVSSRESBVDAMXPHI2BE6 5 4 3 2 1 44 43 42 41 40NMIB739NCVPA838RWBVDD937VDDA01036D0A1NC1112W65C816S3534D1D2A21333D3A31432D4A41531D5A51630D6A61729D718 19 20 21 22 23 24 25 26 27 28A7A8A9A10A11VSSVSSA12A13A14A15Figure 3-1 W65C816S 44 Pin PLCC PinoutThe Western Design Center W65C816S 13
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